Barrel_Ball
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Posts posted by Barrel_Ball
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Hey everyone. I'll be the first to say in this topic that I have no idea what I'm doing anymore. Car's popping out the intake, running super rich, falls on its face, appears to have just killed an injector (which I'll be replacing this weekend)...
Details (what I know):
L28ET:
0.020" bore, fully balanced rotating assembly, 5-angle valve machining, self-oiled 'A' grind cam, minor port cleanup, fortified with ARP hardware.
Nissan 45v1 turbo (R33 Gts-t, similar in flow characteristics to stock turbo)
Equal length header
Ford Coyote 32lb/hr (336cc/min) injectors (was running 50PSI, now at 40PSI), high impedance, binned the resistor.
2.5" exhaust from the turbo back.
MS2 V3.0 (can't remember firmware ver. Last installed circa 2011?)
Ford EDIS ignition (escort CPS, B4000 controller, '06 Mustang coil pack).
I know I'm most likely doing a number of things wrong, but I'm not sure what anymore. I change one thing, it gets worse, so I rewind. I change another, it gets better, so I go down that path, and then it gets much worse, then I get lost. I just wanna get this thing to something resembling driveable, so I can take it to someone who actually knows what they're doing.
You'll have to excuse any blurriness in the pics. Here's an msq... 2021-04-29_19.20.12.msq
I've been building this car patiently for the past 8 years, and I'd like to start driving this summer if I can.
Any help/insight would be greatly appreciated.
*EDIT* I also live in Calgary, Canada, which I believe is roughly 3700 ft above sea-level, and my wideband is currently not operational due to the dash being out of the car.
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Progress time! I looked around for options on dash restoration/replacement, but the one option I was going for turned out to have shut down due to a fire that took out all their stuff. One source of new/refurbished dashes was way too rich for my blood, and while I did find a far less expensive source for reproductions, I figured "what's the point if I'm modifying it anyway?"
I decided to rebuild it myself.
Polyvance makes something called 'Fiberflex' which is a polymer brazing rod that's reinforced with glass and carbon. It cools hard, but somewhat pliable, and gave structure back to the areas I had to fill. The big crack here was also further reinforced with some steel mesh from behind.
The stuff was tuff, but sandable. The heavier the grit, the better, but I had to be careful not to rip up too much vinyl and foam in the process.
The next stage is this padded dash filler. The kit I bought came with one of these cans. You will need one or two more.
Stuff mixes and goes down exactly like body filler. Sands very easily, too. There's an adhesion promoter that I also bought. It helps heaps.
I had to build it up a bit to get the contours half-decent, but I'm happy with it, so far.
More as progress unfolds...
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Hey y'all. I just replied to your PM, but I'm going to say this here so others know so far: I haven't had a chance to drive the car yet 'cause it's in pieces, but I ran the engine a bunch of times. Cylinders 4 & 5 leaned out from injector failure and caused those runners to glow, but no cracks so far!
That old video showed the car running using a performance world resonator and a yoshimura muffler from a bike.
I used regular stainless mandrel bends for this header, but if you're going to use MIG, I found from experience that schedule-10 stainless is more forgiving, strength-wise.
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Hey, folks! Been a busy, long few months or so, but much has happened in life, and with the project, so here we go!
That climate panel I was developing last time? It's pretty much finished, except I kinda got carried away with an arduino board and some neopixel rings for visual appeal and ergonomics: The heater control knob has a blue LED ring that sweeps red as you turn up the heat, while the Fan control knob has a purple ring that sweeps turquoise. Figured I'd use those colors for contrast.
Also finished, is the tail light installation! Did you know that a well-known baking company not only makes decent bakeware, but also body panels? Neither did I until I chopped up a couple cookie sheets, and shortened them up a bunch to make some tail light mounting buckets that will not only give the light assemblies something to bolt to, but also seal the cabin a bit better, keeping fumes and weather out of the cabin.
Overall, I'd say I did a fine job of the tail light installation...
Moving to the interior for some creature comforts (does that kinda make this a ZX now?) I ordered up a bunch of goodies that caught my attention:
- Remote central locking system (because why not?)
-RFID push button start system (because MSA discontinued their kit some time ago...)
-Auto-dimming rearview mirror with integrated backup camera (stupid me destroyed two spoilers and a hatch on the old car, and I don't wanna take any chances).
Also, dash mounted with gauges fully operational (albeit the centers not lit in the picture as I was still figuring out the rest of the lighting circuit), with the oil pressure warning "ring-O-death) surrounding its companion gauge...
Next up, is the rear hatch: An exciting feature of the remote central locking system is an electric trunk/hatch popper function, so my friend and I rationalized that using this feature was a no-brainer, as it not only allows me to pop the hatch without the use of the old, sticking mechanical button, but it lets me get rid of that thing altogether and seal up the hatch, preventing water and such from getting in and literally raining on my parade. Worry not, though, as there will not only be a button inside the car to open the hatch without the remote, but also a mechanical pull-handle, and in the worst-case scenario, just pull the panel and work the mechanism by hand. Never hurts to have fail-safes... Also Celica cargo light... Also final bodywork, prime and paint on the hatch. Still waiting for clearcoat...
One last thing for the time being is a preview of an exhaust tip I found that will compliment the carbon fiber accents. Still needs a de-label and pearled clearcoat to match the rest of what's going on, and finally, some shots of how she sits currently. More to come...
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To start with, here's a rundown on the setup:
'78 280z
-L28ET, 0.5mm overbore, ITM pistons, full internal balance
-Late 'A' grind cam from a late Z/early ZX
-Rebuilt head: Minor port cleanup and 5 angle valve cut
-'76 non-emmissions intake, stock turbo TB with 240SX TPS
-Custom equal length header with Nissan 45v1 turbo (R33 GTS-25t), 8 psi wastegate actuator
-Denso 440cc fuel injectors (Mk3 Supra) with stock Z resistor pack
Aeromotive fuel pressure regulator set to 26 psi @idle, rises to 30 psi when throttled
-Ford EDIS 6 ignition system: Explorer controller, '06 Mustang coil pack, Escort 1.9 CKP sensor, custom 36-1 trigger wheel and sensor bracket
Running MS2 V3.0, firmware 3.4.1, ZXT chts, GM iat sensor, no idle air control, although I eventually plan to use the factory fast idle valve.
Also using an Innovate SCG-1 wideband/boost controller.
My problems are: it will barely start, especially when the engine is warm, and will not idle on its own, requiring constant blipping of the throttle. When attempting to rev the engine or even keep it running, it backfires out the tailpipe, which tells me it's running rich, and yet it will occasionally pop through the intake, which tells me "lean". The wideband's display is all over the place, reading pig rich when starting and running for the first bit, then it starts jumping randomly between 12:1 and around 16:1. Then if you either leave it to idle or press the gas, it just gives up and leans dead...
The chts and tps are already calibrated, I've gone through various tunes, even changing cells, only for it to kind of work better, but have another aspect of it worse (eg. Better idle but worse intake popping). Currently trying one of Cygnus' older map sets since their engine setup is similar to mine.
Here's some pics of what I have so far. I'm looking for some insight on this. Another important thing to note, is that I live in Alberta, Canada, which is roughly 3500 ft above sea level, which might skew timing and fuel a bunch.
I appreciate any help.
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It's one of these controllers. 10-55v DC motor controller. You can get them on bangood for next to nothing, or your local electronics parts store might carry them. Comes with a 100k ohm switching pot, and a directional switch (which I eliminated). It's quite a nice piece, and fits inside the modified stock slide bracket like a glove.
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This past week, I got ahead with climate control.
The HVAC unit is a vintage air gen 2 mini with defrost. Not content with using the available slide controls, I decided to make my own.
Blower speed is now controlled by a variable PWM motor controller. It has a knob (100k ohm potentiometer) with a built-in on/off switch. Very slick.
Mode switch is a fan switch from a late fox body mustang, 4 pin, 4 position (originally 0,1,2,3). The heater control valve is a 10k ohm potentiometer - 5k works, too.
The panel is just the OEM panel with the center cut out, and a piece of tinted acrylic bonded in. The two buttons are for a/c, and recirc/fresh air door. They even have blue and green LED's to differentiate between them.
The controls themselves are attached to a strip of aluminum, screwed to the back of the panel. I decided to cover it with the holo-foil vinyl from earlier. The end result is quite stunning.
Might do more to this later, but for now, it's a good time to figure out mounting the whole thing to the car.
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Ever considered making them powered? I had the idea of making powered fender mirrors, myself, before going a different direction (powered door-mounted units from a ZX). My idea was going to use a motor assembly from a late-model VW/Audi, since they're a really small, dome-shaped unit. Food for thought...
Like this...
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STR 523 in 15x8", 0 offset, wrapped in Cooper CS5 Ultra Touing 205/65R15
Also, custom graphics on the outer lip...
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I managed to get a few minutes in the garage last week to test fit my tail lights before I started to freeze, and I'm very happy with how it's going to look.
You may have also noticed a different set of wheels in earlier pictures, with one of them showing up in this update. These are STR 523 six spokes (15x8", 0 offset). These were the closest thing I could get to a 280zx wheel that was bigger than 14", but I like them. Anyway, I had a crazy idea, and called up my friend with his vinyl cutter...
This is supposed to be a cross between Datsun's "Shift into awesome" ads for the 280zx turbo with the manual gearbox, and Nissan's "Shift_" ad campaign. Figured I'd bring two different eras together for this little thing, much like what I'm trying to do with the rest of the car.
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Now, onto the interior:
First off, sound deadening has been replaced with a better, more modern substitute. Maybe this car's interior will be quieter than the last...
Next, odds and ends: Throttle pedal from a Lexus IS300 with brake and clutch pedal pads from a Subaru WRX ('08-'14).
Door switches from the back of an X-Trail (back doors) modified with a screw in the end to bring them out far enough for the door to meet. Also, Mustang mirror switch where the dual switch blank was (yes, power mirrors!)
Also, those carbon wrapped upper door panel shells are done, too. Can't wait to get the rest of the panels done!
And now, lighting! Starting off with the headlights, I finally have the Trucklite LED housings installed on the car and wired for testing purposes (not wired to any relays or switches yet). Looking pretty darn good, if you ask me. Bare in mind that the car was on jack stands and thus, does not represent proper headlight aiming.
Finally, Tail lights: These bad boys were a doozy, since somebody (me) had the wise idea to carbon-wrap the tail light panels after everything got laid out and put together... Why do I do this to myself? Whatever, it was ultra-tedious, but worth it... There's blue pearls in the first three coats of clear much like the door panel tops, but we decided to finish these in a satin clear, since the gloss might poke out too much. We also tried the lightly smoked covers, and the overall combination looks stunning.
So here's to another year of the build! Wish me luck!
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I'm putting this next part of the update in a separate post to avoid cluttered posts, so let's continue!
First on this post: Ignition system! After having bad experiences in the past with failed 280ZX turbo optical distributors (and how hard they are to come by), I decided to upgrade away from a dizzy system altogether, and am going to an EDIS install.
While there are trigger wheel kits out there, they're kind of a pain when you have to remove said trigger wheel or sensor just to change a belt, only to have to reset your timing and stuff afterwards, so I went a different direction: I went to Princess Auto (Canada's version of Harbor Freight, I hear) and picked up a 36 tooth #40 size (I think) sprocket (grabbed a second one in case I messed up the first attempt), cut the hole up to the correct size on my work's brake lathe, welded it to the back of my crank pulley (after turning it's back step a smidge to make sure it was true), then put the whole works up onto my friend's lathe, and cut the teeth flat. After making a bracket for my CKP sensor (Ford escort 1.9L), I ground out my missing tooth for cylinder ID.
Then, to avoid any walking of the oil pump gear, I chopped up an old dizzy, and made it into an idler bearing!
The coil pack ('06 Mustang V6) and EDIS controller (Mazda B4000) are mounted on opposite sides of the engine bay, connected by a section of 4-lead trailer cable, tucked in between the top rad tank and the upper rad support. Also, new plug wire layout!
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Hey folks! Having moved back to Calgary towards the end of 2017, I've gotten kinda busy with the car again. Here we go!
First up: Bodywork: Around January, last year, we got to finishing the sheet metal repair, body filler and primer. The door jambs, hatch and windshield cavities have been painted body color to make it easier to blend later when the car finally gets painted. The fenders have also been done, but not pictured.
Next up, HVAC: I decided to ditch the old heater box system, since I have zero confidence in the longevity of the original heater core, and went with a Vintage Air Gen II mini setup. Currently working on brackets and custom climate control panel involving a PWM variable speed motor controller for the blower.
Also, yes, I'll be running A/C. Some people might wonder: "Where are you going to put the compressor if the factory location is being occupied by intercooler piping?" The answer: The opposite corner on the front of the engine: Where a power steering pump might have been on a ZX. Compressor's out of an '05 Subaru Legacy, and is a scroll-type compressor, making it extremely compact compared to a Sanden SD-5. Also adapted for use is an A/C belt tensioner from a Chevy Avalanche (any truck LS tensioner should be the same from the early-mid 2000's).
How the system is supposed to work, is the Crank drives the alternator and water pump as per usual. Then, the water pump drives the A/C compressor, using a serpentine water pump pulley from a VG33E (2nd gen Pathfinder) stacked on the OE pulley. Like many things on this car, purely experimental at this point, but it looks like it will work swimmingly.
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So... in this second update, today, we're gonna talk about tail lights, which is in a different post because I don't want this to get lost in a post about sheet metal.
I decided to go this route instead of the PT-Cobalt (HHR) tail lights, because they sat too deep into the vehicle, and interfered with the fuel tank vent lines, and they stuck out from the panel more than I would like, so here we are.
To start with, I tried a little experiment with that Q-bond adhesive, learning that it's actually a cohesive, which can melt/weld polycarbonate lenses together. I started off by taking a 4 1/2" trailer tail light lens, boring a hole through it, and then bonding a 2: LED clearance puck in the center. It turned out like this:
I thought to myself, "This has some potential."
I then, tried the same thing with amber markers, and a more flush mount to the lenses. These will serve quite well as turn signals.
Sat against the panel for a rough idea of how it may look. Note the small reverse light in between...
Then, the housings. These are the lighting assemblies the lenses came from. Just a 4 1/2" truck/trailer pot light. Nothing special.
I start modifying these by removing the bulb socket...
Then hogging a 2 1/2" hole in the back...
To add this: An LED board from another stop/turn/tail light assembly. Yes, each light took 3 different ones to make, but don't question my insanity, and just go along with it, okay?
Then, function tests:
As follows: running light, brake light, signal, brake with signal, and running with signal.
The lights have a depth of about 2 1/2: from the flange to the back of the LED board. The pots will be welded and blended into the back of the panel, making them one piece. The snap rings holding the lenses in will also be painted black to blend them in a little better.
Then, I decided to play with some lightly smoked acrylic sheet:
This is more "proof of concept" than anything, I guess. They will be held on by probably black button-head bolts, and sealed to the panels with closed-cell foam. Mainly for show purposes. I like them, personally. Simple, inexpensive, and somewhat unique.
Finally, due to certain life-related changes and transitions, the car may go into storage after the metal/body work and the wiring is complete. Updates as they unfold...
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So, after a long break, the sheet metal repairs have resumed, starting with the hole in front of the rear passenger wheel, among other things.
Cut out and new wheel well structure being welded in.
This section is made using a metal shrinker to get the curve close...
From the inside...
A stepped edge added to the patch area for added strength and easier patch application.
Tacked in over and over...
And all around.
Ground and blended in. This will later be finished with just a skim-coat of fiberglass filler. This also needs to be repeated for the other side.
The curve and the inner lip has been reproduced quite well in my books...
Then, the rear passenger quarter panel lip, itself. This had a small spot of rot that needed immediate attention...
More of the inside structure that needs repair.
Believe it or not, this lip section is from an aftermarket front fender I had previously used for patch sections. The lip contour is so close, that it'll make it much easier to repair this section rather than trying to reproduce this complex curve.
Tack-welded into place. No further pics of this at the moment, but it since, has been finish-welded, blended, and is ready for the skim of filler.
I will post a second update now, as it pertains to a different part of the car...
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Plumbing update: A bit more progress was made on the 280's engine bay before a brief hiatus (due to a certain Z32 turbo swap that refuses to run), but here's some pictures of said progress...
New location for the vacuum distribution block: right over the hole where the wiper motor wiring went.
Here's the new wiper motor wiring, by the way...
More stainless lines going left of the engine bay (our right).
A hydraulic hose connects said distro block to the engine intake manifold to accommodate for engine movement.
Looking at the firewall, the one stainless line goes to the bulkhead fitting from last time, and another ending at a barb fitting. This is where the boost control solenoid will go, as the wiring for said solenoid will enter the firewall near the brake booster.
Then I made a coolant transfer pipe to replace the long heater hose:
Made from an intake crossover pipe from a Z32.
Cut off the extra pipes, filled the holes, and welded on some mounting tabs, and bolted it to the block.
Don't have to worry about long, flimsy hose with a ton of possible leak points.
Enters just behind the head exit fitting.
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Heh... Now that I look at it, it kinda does. Might have to make one look like that on purpose, next time. Might even play with J-pipes on other low-boost turbo experiments in the future. You know, for those engines that don't have an obtainable turbo manifold available for them...
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Holy Resemblances, Bruce!
It's the BATMANIFOLD!
What? Did I do something wrong? I'll admit I was going for a similar trick to the crown kits from way back, but sadly, the way I was making it with the sch-10 bends, it would be less than 1/2" from the steering shaft. The only way I could figure it out was to run the J-pipe back, instead of outwards.
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That stuff looks almost like the sch-10 stuff that vibrant makes, which I once used on an experimental J-pipe that mounted on a stock late L28 manifold. I welded it with just my MIG, and used 1/2" mild steel for the main flange, and a reused turbo flange from a Subaru up-pipe. I didn't like how close the downpipe was to the firewall, though, so I made the full manifold in question, but that was TIG'd together by a retiree from the airforce. He says it shouldn't crack, but we'll see.
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I revisited this thread as I continue to plan some things out, and I noticed something. Do the windows on 280s not roll all the way down, or did you just not go all the way in your demonstration video? I know you mentioned that's why you didn't go up all the way, but I wanted to make sure that's the same case with the lower travel.
I didn't go all the way down for the same reason I didn't go all the way up in the demo video: They weren't adjusted, and the rubber bump stop at the bottom of the door wasn't installed yet. Would've been a pain if I took the motor too far and the linkages came apart at the end of their travel on each test.
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Slow-ish progress as of late, but here goes.
T-fitting on the oil distribution block to accommodate both, the new oil pressure gauge sender, and the dummy-light switch.
Decided to mount the Megasquirt II under the front of the driver seat, and needed a vacuum line to run from there to the engine, so I used some thick-walled stainless tube that's normally used for high-pressure steam lines.
Compression fitting with 1/8" hose barb at either end.
ECU in its general location to show how this is going to work.
Runs along the inside, to be hidden by the carpet.
Uses a section of hose as an interconnect for ease of installation. Bent in such a way to clear the opening for the EFI harness.
Runs behind the pedals, and out through a hole that was previously drilled by a previous owner to run some hack-job wiring of some sort. Now cleaned up and properly round.
Same compression fitting and barb adapter with a sealing washer, together making a sealed bulkhead fitting. A vacuum hose will go from here to the engine's intake manifold.
More to come as I figure out what I'm doing.
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Small update, today, but I thought I could post a couple dash-related things:
First, a sort of preview pic of the dash with the revised vent panel (SCG-1 gauge installed) situated in its cavity.
Then, I brainstormed an idea for the turn signal indicators and their location:
A small LED beehive light right where the old bezel screw used to go. The bezel is already attached to the gauge frame, anyway, and the bolt in the back holds it pretty good. Any unwanted rattles can be taken care of with closed-cell foam around the outside of the bezel.
The original mounting boss inside the dash for the old screw was cut out, and revealed much space for the back of the light to sit. It's the length it is due to the resistor inside the holder. These are 24V LEDs that will work with charging system voltage (12V diodes max out at 13.5V, whereas the charging system will see around 14V or thereabouts).
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Gotta be careful that if it's green stuff, it's actual loctite, and not permatex sleeve-locker. That stuff be permanent!
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Gauges have been finished, and I'm quite pleased with the results:
Oil pressure warning - Note the multiple LEDs.
Fuel level gauge in low fuel mode - Green has been chosen, with this being a tri-color LED strip...
4 Red LEDs indicate brake warning/e-brake...
And the Blue light indicating hi-beam. The fuel gauge is in the middle of the three, as I consider the multi warning light to be more of a central message center of sorts.
Then, the tach and speedometer:
The characters appear a bit blurry because first: they're bright, and second: the phone's camera lens is getting scratched a bit.
Mounted in their pods. I removed the lenses, and cut a piece of acrylic plastic that would fit a 3 3/8" gauge, then epoxy'd it to the back of the pod insert.
Mocked up in the dash to see how everything looks when powered down.
Like peering into the abyss...
They look quite at home in there.
Updates as they unfold...
L28ET base settings and tables?
in MegaSquirt
Posted
Thanks for the advice. I did as you said, and redid my timing map from scratch. It idles pretty decent for the most part. Idles better than it did previously, even. I guess I'm beginning my learning curve from scratch, too.