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LSX powered BMW M3, E36 chassis...

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Forgot the EFI update…

 

Made up my mind to go with the GM PCM and GM cruise control.

Sold the WOLF V500 and found Chevy Thunder, who will set you up with a stand alone GM PCM and harness for your LSx conversion. He sets some basic settings in the PCM such as tach signal to 6 cylinder, VATS delete, CAGS delete, sets the speed input to match whatever your gearing and tire size is, etc. He also custom builds the harness to whatever length you need to fit your application, including all the connectors you need such as the DLC, your choice fuel injector connector style, O-2 sensor connectors style, 3 wire or 5 wire MAF, coil sub harness connectors, GM cruise control, etc. Also includes the necessary relays and fuses for fuel pump, PCM power, cooling fans, configures for single or dual fan, your choice. The PCM is left unlocked for future tuning if you so desire. I received the PCM and harness and WOW! :blink: Every wire/connector is labeled for easy hook up. Relays, fuses, etc. Also included is a very thorough CD regarding many aspects of installing the LSx and PCM including diagrams etc. Very very helpful for anyone doing an LSx conversion. :2thumbs:

I also did a bit of research and picked up the HP-Tuners pro suite so I can fine tune everything once it is up and running. Already been using the HP-Tuners to diagnose hung 2nd gear shifts and low idle swings on my wifes Suburban, (TPS/connector issues along with MAP sensor going out).

 

On his web site is tons of LSx info, PCM pin outs, how to measure your car to determine how long you need the PCM harness to be, etc. Lots of other pages hidden on the site that aren’t accessed from the main pages, just surf around…

 

http://www.chevythunder.com/

 

The LSx stuff;

http://www.chevythunder.com/ls1_page_1.htm

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Haven’t touched the brake lines yet tough I keep threatening to. I am short one little custom bracket for the ABS sensor, with that in hand I would be far more inclined to finish the brakes 100%. :wink:

Today’s distraction was the throttle which is now 100%. I have the clutch and throttle 100%.

 

Used the Lokar 36” LS1 cable and it fits perfectly. Length is perfect, clevis fits the BMW pedal perfectly, throttle travel is perfect, TB hits WOT with .050” between the pedal and the pedal stop on the floorboard, couldn’t be any easier. Only actual work involved was altering the angle of the firewall penetration so the throttle cable ferrule was aimed more directly at the pedal for smoother actuation.

 

Next on the to-do list in order of priority;

Brake lines for the ABS relocate.

Heater hose and dual zone climate control valve relocate.

Swap the diff flange out to the 4 bolt style.

Mount the cruise control module and figure out the A/C.

Repair the rear shock tower mounts, (removed the rear tires and WOWZERS! Shock tower sheet metal is literally separating from the body!)

 

Lokar Clevis fits BMW pedal perfectly!

DSC_5229.jpg

 

 

Throttle cable connected and routed.

DSC_5228.jpg

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Small update.

Pulled the engine/trans out of the car and “finally” relocated the ABS module to the passenger side behind the strut tower.

Drilled the spot welds that held the blower motor tray that was in this position, using the ABS module mount brackets cut off from the driver side, hastily fused them to new sheetmetal to hold the module in its new location. Welds look like….. well… lets just say pigeon poo is more aesthetic, but it works. Welding is not one of my strong points.

If time permits this weekend, I plan to have the ABS module plumbed.

 

Plenty of room to mount the GM cruise control module next to the ABS module and the climate control valves under the ABS module, if I don’t mount them where the ABS module used to reside under the brake M/C.

 

DSC_5231.jpg

 

DSC_5230.jpg

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Spent today cutting, bending, and flaring some brake tubing. All four wheels are now hydraulically connected to the ABS module, just need to plumb the M/C to the ABS module and the return lines for the ABS module. Hoping to finish the brakes 100% this coming week, if possible. :wink:

 

Will tidy up the routing of the brake lines once the M/C lines are plumbed in.

 

DSC_5232.jpg

 

DSC_5233.jpg

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Finished up the fuel lines 100% today. Mallory Fuel Pressure regulator tucked nice and tidy under the little ledge where the driver frame rail meets the firewall. Connected the fuel lines to the intake manifold and energized the fuel pump checking for leaks. There was a leak, not from any of the new fuel lines but from the hard line that runs between the tank and the fuel filter was leaking where it passes through the forward most hanger! This car spent some time on the East Coast and its owner apparently drove this car around during the winter there. Some of that awesome rust accelerating agent used on the roads back east made its way between the rubber hanger and the fuel line itself where it went to work rusting through the fuel line! I happened to have some used 8mm fuel lines from a Datsun Z car that is in excellent condition, cut it to length, added appropriate bends, swaged a small flare on the ends, back in business.

 

Also finished up the Brake M/C lines a few days ago. All that is left with the brakes is to install the ABS travel sensor bracket when it arrives so I can install the pedal assy then bleed the brakes.

 

Also on the list is the heater valve and heater hose routing, I have a couple ideas in mind…

 

rustleak.jpg

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We were getting a little further along with mounts, wont have the mounts finalized till the headers are finalized. So long as the headers come through soon, this project will be on the road soon and parts available.

 

 

Participating in another thread elsewhere I finally performed the testing I eluded to earlier regarding measuring the BMW and LSx temp sensors in hopes the BMW and LSx temp vs resistance curves would be similar. Turns out they are not the same, the LSx PCM needs the GM CLT sensor and the gauge needs the BMW sender. Simple enough for the later BMW using the 4 prong sender/sensor as it threads directly into the LSx cylinder head, having two heads means one sender/sensor per head, all is well. :alright

For the geeks keeping score at home, here are the approx values I measured today. (Temp gauge was calibrated against an infra-red temp gun and Fluke temp probe and within 3% error. Temp vs Ohm should be within 10% of actual).

 

BMW EFI and BMW Gauge = BMW sender/sensor.

LSX EFI = LSx temp sensor.

 

Sender.jpg

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About time for an update…

I’m still alive, gaining a little weight, getting older, and still married. Oldest daughter graduated high school, she also got her drivers license and has commandeered my only mode of transportation. Summer weather has been real mild, actually sort of a weird summer weather wise. Our annual camp-in this year was fantastic, thank you to all that came out. The dusty hulk of steel that is close to being evicted, running or not, is still in the shop and on jack stands.

 

Water temp sendors AND sensors, BMW EFI, BMW Gauge and LSx, measured, (Senders and sensors tested were BMW BOSCH connection/square 2 prong; Black top, Green Top, Brown/Tan top, 4 prong prong round top, early Datsun EFI and GM LSx. Of interesting note is that all the BMW 2 prong EFI and Datsun EFI sensors were within 2% of each tother from 60-20 degrees F).

 

First the good news.

The resistance values-vs-temp values for the instrument gauges on ALL E36 cars, '92-'99 are the same! We all have been speculating they were different, come to find out they aren’t. BMW originally utilized two separate sensors/senders, (one for the EFI, other for the gauge), on the ’92-’95 cars then in ‘96 combined them into one housing for the later cars, the 4 prong sensor/sender and retained the same exact values for both DME and gauge.

 

Now the great news!

What that means for anyone doing the 92-’99 E36, (318, 323, 325, 328, M3,) LSx conversion is the ’96+ 4 prong sensor/sender works with their gauge and threads directly into the LSx head, no drilling, tapping, bushings, adapters etc to use the earlier 2 prong sensor, unless you want to. :confused Just deduce which 2 prongs for the gauge, (easy to do with the Bentley manual and an OHM meter), and you’re there.

 

As for the pig tail, many other BMW’s used this same connector, easy to find in wrecking yards on other cars.

Here are the pins to use (Looking at the connector's end. X20 pins based on 1996 328is):

TemSensorDiag.jpg

 

Connector Part # 12521703571 - Need One

Connector Pins # 61130007657 - Need Two (usually comes with short wire and seal)

 

 

 

The just ho-hum news.

The LSx PCM sensor has a slightly different curve/slope compared the BMW EFI temps sensor' date=' enough so that you wont want to use the BMW DME sensor for the LSx PCM, ([i']see chart below[/i]). One could possibly adjust the CLT values using one of the tuning suites, I am pretty sure it’s just easier to install the GM temps sensor in the other head and be done with it. For what it’s worth, ALL GM temp sensors coolant and air temp have the same resistance to temp values, across the board, Pontiac, Olds, Chevrolet, etc, applicable to all GM Multi Port EFI vehicles.

 

 

LEGEND!

X axis= Degrees Fahrenheit.

Y axis = resistance in OHMS.

BMW EFI I = OBD-I DME temp sensor.

BMW EFI II = OBD-II DME temp sensor.

BMW Gge I = OBD-I gauge temp sender.

BMW Gge II = OBD-II gauge temp sender.

LSx EFI = PCM temp sensor.

 

sndrn.jpg

 

 

There seems to be a down side to these BMW temp gauges. I spent a bit of time researching this and here is what I found.

BMW incorporated some form of buffer within the instrument cluster itself that holds the temp needle straight up, middle of the gauge when the engine is between 140-230ish degrees F. If the coolant temp breaches 230-ish then the gauge will swing from the middle up to HOT, not an incremental climb as one would expect or hope for as the engine gets warmer. The sender itself is analog like any other sender for a temp gauge, this buffering is done in the instrument cluster. Some feel the Euro cluster has less of a buffer but I was not able to find any evidence to support or deny that claim. There is a bit of speculation as to why BMW did this, turning a perfectly useful analog gauge into useless cold hot dial, beneficial no one. (theories such a people are getting so stupid that when they wee gauge move from center they panic and take their car to the dealer so this prevents unnecessary warranty claims, etc). Regardless, I see no point in trying to figure out why BMW did this, it is what it is, any discussion should really be centered around a possible solution to obtain a true analog temp gauge. Some have talked about trying to remove the buffer in the instrument itself, others have successfully replaced the internal guts of the temp gauge with VDO guts, stock needle and now have a gauge that indicates temperature on an analog scale. If someone finds a way to eliminate the buffer itself or other way so to get around this, please share, for now, here is what I found;

 

 

The issue, for those interested in reading;

http://forums.bimmerforums.com/forum/showthread.php?t=1208832

 

http://forums.bimmerforums.com/forum/showthread.php?t=1480682

 

http://m3forum.net/m3forum/showthread.php?t=324399

 

Fixes;

http://forums.bimmerforums.com/forum/showthread.php?t=1105631

 

http://forums.bimmerforums.com/forum/showthread.php?t=776813

 

I tried to verify this “buffer” thing in my car using a 0-10k potentiometer, (Variable resistor), no joy. I think I may to finish up more of the wiring before my instrument cluster will allow the temp gauge to function?!

 

 

In other recent news, received a set of prototype headers to mock up in the car in hopes of finalizing placement of the engine mounts, headers need a bit of work still, we are still up in the air on actual mount design/placement. Though with these headers mocked up I did learn that my choice for location of the Mallory Fuel Pressure Regulator was a poor choice. Headers were within 1/8” to 1/4” of the FPR. Removed the FPR and installed the Corvette FPR/filter in place of the OE BMW filter and all is well now. Connected the battery, (it still has power, even after sitting for over a year!) pressurized the fuel system, fuel pressure is right at 59-60 PSI. Probably should consider ordering another pump to have on hand in case this one dies once I get it on the road. Car had 19x,xxx miles when I put up on jackstands over a year ago, no idea how many miles on this pump and probably shouldn’t trust it especially after sitting for so long and then ramping up the fuel pressure by 33%.

 

 

FPRNOT.jpg

 

 

 

Another note for those of you using the Vette FPR, be aware that if your PCM came from a vehicle that had a FPR that utilized vacuum reference such as the trucks, (not sure about F-bodies), your fuel map will need the appropriate compensation to adjust for not having the Manifold pressure reference. If your PCM came from a vehicle that didn’t have the vacuum reference FPR, no worries.

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Watching all the other E36 V8 conversions come to life and drive down the road over the past few weeks on Bimmerforums is encouraging.

Engine is still sitting beside the car though I did get the low pressure brake line from the reservoir to the ABS module finished and connected. Ran a 3/8” hard line across the firewall with continual slope so any air in this large of line will naturally float up to the master cylinder reservoir or the bleeder block I fabbed and attached tot he ABS module. This bleeder block has two fittings that spaced out perfectly and directly plugs into the ABS module replacing those black plastic fittings. The Bleeder block is hollowed out with an open cavity at the top with a bleeder screw to seal it. Line out the bottom is 10mm with a small section of the 10mm BMW brake hose joining to the 3/8” line and the bleeder block.

 

Diagram showing the slope and relative elevations;

LwPDgrm.jpg

 

Low pressure line is lightly highlighted in GREEN;

LwPrsLne.jpg

 

Bleeder block, (excuse the crude work and finish, losing ambition to take my time and make it nice, just want it done)!

LwPBlk.jpg

 

Bleeder block installed in the ABS module;

ABSModBlk.jpg

 

 

 

For those relocating their ABS modules, both of those black plastic fittings have the same size orifice opening even though they have two different size hoses, for some odd reason. As such, you are not confined to use 10mm for the larger one. Other European cars with ABS modules have similar fittings and at different angles, 45 degrees and straight show below, which may help in routing those low pressure lines.

LwPrSzes.jpg

 

LwPrFtg1.jpg

 

Till the next update, hopefully before winter sets in, happy motoring... :2thumbs:

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Between doc visits, a trip out to Verona/Madison WI, (went the Packers-Bills game on the 19th and visited the EAA Air Venture museum while there), enrolling in some A-CAD classes, etc not much progress has been made on the car. There hasn’t been much to do any how as the headers are still being sorted out. :violin::toetap05:

I think my last substantial update was back in April or May? My how time flies watching grass grow. Once the headers get sorted and finally built, then it’ll be gangbusters to get it on the road, probably wont stop to update the build thread till it’s on the road and I can breathe again…

For now, just another pittly little update.

 

Started in on the wiring, reconfiguring pin out and inserting pins back in the circular BMW connectors I picked up for the ABS relocation, (just made and extension harness, didn't have to cut or splice the car or ABS module), in the middle of routing the LSx harness.

 

Thank you to Pzary for his advice I spent a couple days building a cheesy little PCM desktop tuning bench, now I can access and tune the PCM outside of the car, on the bench/desktop. Made a couple adjustments to the PCM tonight including Throttle Cracker, Throttle Follower, fuel cut parameters, will be massaging the VE table and ignition map to better match the Vette cam, etc. (PCM is '02 Avalanche), bench tuned a few others PCMs as well for other swappers, (delete VATS, skip shift, set tach signal, tire size/gearing, hi-lo speed cooling fan set points, etc).

 

PCM tuning bench extracting data;

Bch1.jpg

 

Bch2.jpg

 

Bench0.jpg

 

 

BMW Oil pressure sender is installed on the LSx. Spent more time scratching my head with hand full of fittings trying to figure out how I am going to do this. Almost just drilled and tapped the 16x1.5mm adapter to directly accept the 12x1.5mm oil pressure sender, but couldn’t quite bring myself to do that as the wall thickness would be quite thin and the last thing I want is to shear the head off the adapter leaving its threads in the block of an assembled engine. Using another 1/8 NPT fitting I drilled the female end and tapped for 12x1.5mm to accept the BMW oil pressure sender for the idiot light, robbed the LSx oil pressure sender crush gasket and installed the mess.

There has to be an oil pressure switch out here from another OE application that is 16x1.5 mm threads. Sure would make that a whole lot easier. :unsure:

 

OilPres1.jpg

 

OilPres2.jpg

 

 

 

While watching the Grass grow I thought I’d play a little more with my 3M Di-NOC faux carbon fiber, (used it on the PCM tuning bench), and covered the aluminum plug cover for the EGR port on the LS1 intake. Don’t like the shiny screw head, may have to faux anodize that, black sharpie. :ass:

 

CrbnCvr.jpg

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Quick update and info on the GM Fuel tank pressure sensor.

 

Wiring is approx 95% complete, only couple connections to make, prime the oil system with the remote oil primer then fire it up.

 

 

In short, you must use the GM fuel tank pressure sensor with GM PCM to control the BMW evap canister vent and either the BMW or GM canister purge valve and you can NOT use a GM MAP sensor as fuel tank pressure sensor.

 

Specifics for us geeks;

Using and old PC power supply with its 5 volt DC power source I was able to test a GM fuel tank pressure sensor and the BMW fuel tank pressure sensor to see if the BMW sensor could be retained. In short, NO, it cannot be used with GM PCM. The BMW pressure sensor and GM fuel tank pressure sensor are reversed in their Voltage-to-pressure readings so it will not work properly. In using the GM PCM to control the evap canister and fuel tank purge valves, you must also use the GM fuel tank pressure sensor.

 

Also, you can NOT use a GM MAP sensor for this purpose. I have seen information on the net saying the GM MAP and GM Fuel Pressure sensor are the same, that is incorrect! Those claims are guesses, NOT tested or measured. After testing them side by side, (applying 5 volt and ground, measuring the signal while applying vacuum and pressure), they are not even close! They may look sort of similar, even have the same sealing grommet, but they are NOT the same nor interchangeable.

GM MAP sensors;

Testing the GM MAP sensors, my findings matched exactly what is found online. Registers atmospheric pressure and below i.e. vacuum. At atmospheric pressure, (WOT or engine off), voltage is 5 volt. Pull 5" of vacuum on the MAP sensor and the voltage drops to 4v. Pull another 5", (10" of vacuum total), voltage drops to 3 v. Pull another 5", (15" total), voltage drops to 2v. Pull another 5" of vacuum, (20" inches of vacuum total) and the voltage drops to 1v.

 

GM Fuel tank pressure sensor;

The fuel tank pressure sensor visually looks sort of similar to the MAP, has the same silicone sealing grommet but the MAP connector will not fit. For what it's worth, the crank position and Cam position sensor connector does fit the fuel tank pressure sensor. This sensor also registers pressure above atmospheric, but only barely and is MUCH more sensitive registering minute pressures below and above atmospheric i.e. vacuum and pressure. Of greater importance is its voltage to pressure values are reverse of the MAP sensor.

At atmospheric pressure, the fuel tank pressure sensor delivers 1.5 volts. As vacuum is applied, voltage rise is linear to 5 volts at approx. 1” or 2" of vacuum. My vacuum gauge is not accurate enough at that low of vacuum for an accurate measurement. Using your mouth you can easily max out the sensor with light suction or light pressure. Blow into it the voltage continues to drop below 1.5 down to minimum of .23v, I guess that to be pressure to be approx. 1-2 inches of pressure, not even half a PSI. Just blowing across the opening the voltage swings, this sensor is very sensitive.

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Short version, fired up the engine today! WOOHOO! :trippen::mparty:

 

Long version.

Built a DIY LSx engine oil primer, (air actuated piston forces 4 qt’s of fresh oil in to the engine oil galleys via the port above the oil filter), worked out perfect, RTz was on hand to help with pressurizing the oil galleys and film the video. Just cranking the engine over on the starter with the coils/injectors disabled works fine, I wanted fresh oil to the bearing before spinning the crank.

After a few electrical checks to verify wring was correct, no back feeds were going to keep the start engaged, pressurized the fuel system, etc. Then bumped the starter and the engine immediately came to life on all 8 cylinders, WOO HOO!

 

Here are some pics of the oil system primer and video of the start up.

Primer.jpg

 

TurbGag.jpg

 

 

Flames! :flamedevi

 

As a gag we clamped an old dead Turbo onto one of the exhaust Mani’s, it would barely spin, (boost gauge sitting on the intake)

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Small update.

The JTR E36-LSx driveshaft arrived today. Nice piece, spicer u-joints, heavy wall tubing, (.083"), 2 1/2" diameter. Hoping the smaller diameter will help alleviate some of the driveshaft rubbing issues the cars with the stock diff bushings and cradle bushings are exhibiting. Not 100% sure it will, still looks pretty tight in the areas a few others have posted about, will be keeping a close eye on it once on the road. Where the fuel tank crosses over the driveshaft hangs down just a skosch below the roof of the tunnel. The tank pushes up easily so has room to be raised, will be looking into raising it a little more, possibly another strap in this region.

 

Installed the tilt steering column from an earlier E36 that I picked up back in summer of '09. Install went smooth, I like the tilt function. Best part of todays project is the new steering column has good bearings, not rusted, don't squeak, etc. While I had the steering column out with great access to the instrument cluster I pulled that and installed a pin in location 13 of the X16 connector for future Euro cluster with oil temp gauge and also removed the ASC bulb for the ASC delete.

Wired in the PCM activated shift light into the cluster. Tore the cluster down to its essentials and spent some time scratching my head looking for a good location in the cluster for an LED shift light that would look OE. Ideally want it on the high side of the tach range. It can be done but will require a good long day with lots of detail work to pull it off nicely. Decided to save that project for another time, for now I took one of the indicator bulbs, installed a bright LED in-place of the bulb using the BMW socket, plugged it into the indicator in the bottom, just left of the center, looks like a gear with "!" in it. Not ideal, but at least the shift light is now wired in, functional, and OE appearing.

 

Sanderson headers is working on refining the design to be less compromising and clear most oil pans. Passenger side prototype header is complete and the driver side is getting one modification to the #1 primary. If all goes well with the driver side header I could have a set here in the next month or so.

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Update with wonderful news. :2thumbs:

JTR and Sanderson Headers are getting close to releasing their E36 LSx long tube headers. Approx ETA for release of production units is 2-3 months.

These pictures are of the Prototypes. Steel, long tube, 1 3/4" primaries, 3" collector, V-band connection, and they clear the stock steering shaft.

These prototypes have been given the green light from which Sanderson will build fixtures/jigs around for production units. Before any headers will be offered to the public a few pre-production units must also receive the green light from JTR, (quality assurance), once the pre production units pass, production will start. Again, earliest release of approx 2 months time so long as the preproduction units fit as intended. :mrgreen:

 

Pics of the JTR mockup mule at Sanderson Headers.

 

 

Driver side;

Drv1SM.jpg

 

DrvSM.jpg

 

 

Passenger side;

Pss1SM.jpg

 

Pss2SM.jpg

 

Pss3SM.jpg

 

PssSM.jpg

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Headers arrived, excellent quality and fit very well. 1 3/4" long tube mild steel, 3” V-band flange.

Excellent clearance between the #7 primary and Mercedes booster as well as the stock BMW steering shaft. Taking them down to Finish-line coatings here in Portland on Monday for their Turbo-Black ceramic.

 

Now with headers here, mounts can be finalized, trans X-member designed and built around the GM F-bod LS1 trans isolator, heater hose/pipe routed, final fuel line routing into the engine bay, etc.

 

Here are some shots of the soon to be released JTR E36 LSx long tube mild steel headers.

 

O1.jpg

 

Stg1.jpg

 

Drv2.jpg

 

Drv1.jpg

 

Pss1.jpg

 

Und1.jpg

 

Und2.jpg

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Slacking on the updates, family situation requires most of my free time along with getting this back on the road as daily driver, so several updates from the past few months all at once, culminating in the car is driving. :2thumbs:

 

My apologies for crappy phone pics. Took some real pics, hope to get those posted early next week.

 

Any how, got the JTR headers back from Finishline Coatings here in Portland, coated in their "Turbo Black". This is the Best thermal coating they offer, claim it is a 60% reduction of heat vs uncoated. They applied 2 coats externally, 1 coat internally. Personally, I really like matte black finish, should contrast nice with the wrinkle black valve covers that will go on after the engine is installed for the last time. :D

 

f4ea76de.jpg

 

6eb1374d.jpg

 

f87243fe.jpg

 

bd9d6169.jpg

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Heater hoses are now done, brake booster vacuum line is done, brakes are 100% and bled.

 

Relocated the heater valve to just under and in front of the brake M/C. I used the BMW mount that was attached to the wall and attached it to the driver fenderwell as high as possible next to the strut tower. Heater supply hose (5/8"hose off the water water pump) routed down and then under the engine above the rack and pinion up to the bottom/middle port of the valve with a 5/8"-3/4" reducer 180 bend. The other 2 lines from the valve are routed to the firewall under the brake M/C. Heater return line is the only hose routed behind intake manifold. I don't know how you other guys are able to get 3 hoses behind there when 1 hose barely fits.

 

Fired up my DIY brake pressure bleeder with a converted Mercedes reservoir cap, (BMW & Merc caps are the same size and threads), hooked up shop air, regulated down to 7 PSI and pumped just over 2 qts of DOT4 through the system and ABS module purging all the old dark fluid from the car. Hooked up the electric vacuum pump to the brake booster simulating a running engine, pedal feels good. :wink:

The only other item to address while waiting the trans X-member is the PCV plumbing. :-(

Once the trans X-member arrives, tie the headers to the exhaust, detail the shifter and boot, radiator and hoses, and God willing be driving it, soon.

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Trans X-member in hand, progress is steadily being made down the home stretch.

 

These pics are of the JTR preproduction X-member, production bits may vary slightly when released. A very stout design that utilizes the OE LS1 rubber isolator and maintains lots of room for a tidy tight exhaust system.

447697f7.jpg

 

648e369f.jpg

 

 

Finished the shifter as well, will work on the body rubber boot tomorrow. Planning to run the Camaro/Firebird ball shift knob for know, will probably modify the Hurst shift arm to accept the smaller ID Vette knob with 6 speed pattern in the future. RTz gave me the 6 speed plaque, hoping to mount/inset it in this location.

08ac7789.jpg

 

RTz also finished up my ugly rear shock tower mounts as well, something he offered to help with early on, (thank you Ron). I knew my shock tower mounts were needing replacement when I bought the car so bought the new sheetmetal from BMW then. When I dug deeper recently to get started, opened a can of worms. My shock tower mounts had been replaced in the past, hack install, and were now blown out again, due to the hack fix in the past the typical method of drill the spotwelds and replace the Sheetmetal was not an option, not able to use the bits I bought from BMW now needing the fenderwell Sheetmetal as well. Finally an E36 showed up at one of the local Upullit yards, took cordless sawzall and cut out both rear fenderwells.

Pics are before and after of drivers side, passenger side was similar.

9362b700.jpg

 

4a5e785d.jpg

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Reliable source noted my solid shifter linkage would transmit engine buzz/tingle, will be looking to rubber isolate the shifter in the near future to help retain as much of the original BMW smoothness as possible.

 

Between family activities today, was able to button up the interior 99% today. Just need to adjust the clutch and brake pedal switches engagement/disengagement for the GM cruise control.

 

06f99e9a.jpg

Tags on steering wheel are power-train fluids notes/reminders.

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Ancillaries and serpentine installed, Intake is on, clutch hydraulics connected, throttle connected, all EFI connections made. Waiting on the Stage-8 locking header bolts to arrive, hopefully this week.

If all goes well, could pull it out of the shop under it's own power this coming weekend, following week to be shake down for bugs, leaks, etc.

 

Here's a shot with EFI wiring connected, ancillaries on, throttle connected etc.

 

c75dda4a.jpg

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The mother of all updates for this build.....

It's alive!

Tuesday night after some fiddling with the PCM, feeling brave I put the wheels on and set it on the ground. First movement under it's own power was the obligatory burnout in the shop, RTz dared me. :wink: Drove it 100 yards down the road and back, WOO HOO! Thursday night, fiddled a little more with HP-Tuners, feeling brave again, drove the car around the lake, 3 mile jaunt. It ran, but not well, flat spots, surging, etc. Within minutes of pulling back in, the shop. Tongboy pulls up with his LS1 M3 sedan for some fine tweaking of a couple parameters in his PCM, he graciously allowed me to use his tune for the "write entire" to delete the DBW programming in my PCM so I didn't have spend two more credits using another tune.

thank you Jeremiah.

 

Friday morning, performed write entire. TPS now registers in VCM scanner. Engine fired up, another trip around the lake with open headers, stretched it's legs from 1st through 3rd gear, Definitely quicker than it was with the S52, then Drove it 10 miles through down town to the muffler shop with open headers to tie in the M3 exhaust to the headers. 

 

 

HUGE thank you to Mike of JTR for his patience with all my crying over the past 2 years and for what I feel is a very well engineered, robust LSx E36 kit.

 

The 260-Z in the background is RTz's with the S52 from my M3, it has been on the road for the past few months and is amazingly fun to drive.

 

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Talked to Ryan, owner and fabricator at Mulligans custom exhaust and custom hot rods in Sandy today, he said the exhaust is done and it's a sleeper. I took that to mean it's quiet, exactly what I wanted. I gave him him free reign with the exhaust, wanting to retain as much of the stock exhaust as possible, in particular the stock M3 muffler, neck down from the 3" collectors to 2 1/2". 

Stopped in and took a peek under the car, WOW! very nice work, Ryan is a craftsman, too bad his work under the car where isn't seen very often. All bends are mandrel, welds are beautiful, came out much nicer than I hoped. Ryan transitioned from the 3" collector immediately to 2 1/2", tidy quality 2 1/2" flex joints just aft of the V-band, 2 pair of O2 bungs per pipe pre cat, (one each for narrow band O2, other two for wide band tuning). The stock cats with their angled inlet was not worth working with so he installed a pair of tight tidy aftermarket 2 1/2" cats then added 2 post cat O2 bungs. I wanted this to be quiet as a daily driver so adding another muffler in line with the stock M3 muffler was on the list. As luck has it, the BMW tunnel is just wide enough and deep enough to fit a dual 2 1/2" In-Out  muffler, Ryan and I both like the crisp snap and snarl of a V8 exhaust note through Spintechs. From there he continued in 2 1/2" to the stock M3 tail pipe where it necks up to just under 2 1/2" from the 2" or so. 

He used the BMW carrier bearing mount holes for rubber isolated hangers. 

Fabrication and installation is 1st rate, anyone in the greater Portland OR area needing custom exhaust or any custom performance fabrication work, I strongly recommend Ryan at Mulligans in Sandy. Humble, down to earth, great guy. :wink:

 

http://www.mulligansmuffler.com/

 

How does it sound? Uh.... well, it is soooo quiet there's nothing really to judge, not much of an exhaust note. Standing behind the car about 20 feet back, someone in the car revving up the engine, you can hear the intake under the closed hood, (sans filter), over the exhaust. Total sleeper. Ryan says it's too quiet. Before he tied in the stock muffler he said with just the Spintech it sounded AWESOME! 

 

Drive home was AWESOME! car is as quiet as a stock M3 if not quieter inside. 

HUGE thank you to Mike of JTR for his use of OE GM engine/trans isolators, even with these moderately firm Vette isolators that don't allow any movement by hand, it is smooth, no buzzy-ness. RTz drove it tonight and commented on it being so quiet and smooth, the car is deceptively quick. No aural indicator or buzz to indicate the car is working hard other than the rapidly climbing speedo needle. 

 

4 day weekend for me starting Friday, will take apart the front end to properly reassemble and working out any bugs, hope to be driving it daily starting Tuesday. 

 

Video to come soon. 

 

Here are some pics of the exhaust work, my apologies for the poor cel phone photo quality. 

 

Standing under oil pan looking back;

2849e40f.jpg

 

From behind looking up;

579df59c.jpg

 

The Spintech and hangers;

aa7f8f6a.jpg

 

Profile;

b3ea8a24.jpg

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Talked to Ryan, owner and fabricator at Mulligans custom exhaust and custom hot rods in Sandy today, he said the exhaust is done and it's a sleeper. I took that to mean it's quiet, exactly what I wanted. I gave him him free reign with the exhaust, wanting to retain as much of the stock exhaust as possible, in particular the stock M3 muffler, neck down from the 3" collectors to 2 1/2". 

Stopped in and took a peek under the car, WOW! very nice work, Ryan is a craftsman, too bad his work under the car where isn't seen very often. All bends are mandrel, welds are beautiful, came out much nicer than I hoped. Ryan transitioned from the 3" collector immediately to 2 1/2", tidy quality 2 1/2" flex joints just aft of the V-band, 2 pair of O2 bungs per pipe pre cat, (one each for narrow band O2, other two for wide band tuning). The stock cats with their angled inlet was not worth working with so he installed a pair of tight tidy aftermarket 2 1/2" cats then added 2 post cat O2 bungs. I wanted this to be quiet as a daily driver so adding another muffler in line with the stock M3 muffler was on the list. As luck has it, the BMW tunnel is just wide enough and deep enough to fit a dual 2 1/2" In-Out  muffler, Ryan and I both like the crisp snap and snarl of a V8 exhaust note through Spintechs. From there he continued in 2 1/2" to the stock M3 tail pipe where it necks up to just under 2 1/2" from the 2" or so. 

He used the BMW carrier bearing mount holes for rubber isolated hangers. 

Fabrication and installation is 1st rate, anyone in the greater Portland OR area needing custom exhaust or any custom performance fabrication work, I strongly recommend Ryan at Mulligans in Sandy. Humble, down to earth, great guy. :wink:

 

http://www.mulligansmuffler.com/

 

How does it sound? Uh.... well, it is soooo quiet there's nothing really to judge, not much of an exhaust note. Standing behind the car about 20 feet back, someone in the car revving up the engine, you can hear the intake under the closed hood, (sans filter), over the exhaust. Total sleeper. Ryan says it's too quiet. Before he tied in the stock muffler he said with just the Spintech it sounded AWESOME! 

 

Drive home was AWESOME! car is as quiet as a stock M3 if not quieter inside. 

HUGE thank you to Mike of JTR for his use of OE GM engine/trans isolators, even with these moderately firm Vette isolators that don't allow any movement by hand, it is smooth, no buzzy-ness. RTz drove it tonight and commented on it being so quiet and smooth, the car is deceptively quick. No aural indicator or buzz to indicate the car is working hard other than the rapidly climbing speedo needle. 

 

4 day weekend for me starting Friday, will take apart the front end to properly reassemble and working out any bugs, hope to be driving it daily starting Tuesday. 

 

Video to come soon. 

 

Here are some pics of the exhaust work, my apologies for the poor cel phone photo quality. 

 

Standing under oil pan looking back;

2849e40f.jpg

 

From behind looking up;

579df59c.jpg

 

The Spintech and hangers;

aa7f8f6a.jpg

 

Profile;

b3ea8a24.jpg

 

 

That is Pure **** My friend Great job.

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