ZROSSA
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Everything posted by ZROSSA
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Downgraded capacity SR20 for high rev?
ZROSSA replied to nakagusukumike's topic in Nissan 4 Cyl Forum
I wouldnt worry about the stroke. Remember that the cars that used to run in super touring (btcc) ran the same crank and they had a power band between 7000 and 8500. Toyotas 3sg has the same dimensions ass well. Bmw's and fords formula 2 engine used to run to 10500 with similar dimensions and that was in the late 70's. You are just going to need a strong crank and rods + the obvious head work. The btcc engines were converted to gear drive. Cheers, Douglas -
Has this been done? Rear end modification
ZROSSA replied to AkumaNoZeta's topic in Body Kits & Paint
I kind off have.... http://album.hybridz.org/showphoto.php?photo=6309&limit=views It has advanced a little since this photo however you should get the idea. The "diffuser "section picks up at the same angle as the fuel tank to stop air getting traped there. Douglas -
I am in Hawkes Bay, I have a little winery that keeps me very busy and a large shed in which all my projects sit and wait for me to finish them! 260z 383chev, built for very fast road and targa use, ke35 corolla with space frame and buick/holden v6 and my new baby 79 bmw 635csi. This one still goes. promised my wife I wouldnt "play" with it untill one of the other project was finished. Cheers, Douglas
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If its aluminium or glass just bond some honeycomb or coremate to it. That will stiffen it up and you can make it as light as possable. Have a llok in the photos for ZROSSA. THere is a photo of the under trat part of my front end before i bonded to the spoiler. To make this I used a flate sheel of mdf with the shape of the bottom of the spoiler traced on it. Waxed the mdf and layed up a cuople of layers of glass on it. Then used some structural foam with wholes cut in it so I could bond to the original piece then layed more glass over the top. Now that its in the car its very stiff and very light. Coremat would be much better but i didnt have any and its expensive here. Douglas
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Perhaps I should proof read! Thanks guys. Douglas
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Howdy all, I have 8" springs for my coil over set up that I bought from techno toy tuning. Its a nice set up however the istructions are for 10 inch springs. Do I need to mount the spring purchs 2 inchs higher then the instruction suggests to compensate for the 8'ers. My insticts tell me I do. Cheers, Douglas
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DIY 180 Degree/Single plane/Flat plane V-8 crankshaft…
ZROSSA replied to BRAAP's topic in Powertrain
Looking at the photos of the first pantera; I am preety sure that its a normal exhuast manifold. I think it sounds good becuase of the short equal lenght pipes from the manifold to the single exhuast. Dr Gas sort of hints at this when he talkes about his x-pipes. He said if you keep the lenght of the tubes from the collecters to the x-pipe equal you will get a much smoother sound. Must work for y-pipes as well. Douglas -
Cutting out the roll pan
ZROSSA replied to EMWHYR0HEN's topic in Windtunnel Test Results and Analysis
Here is what I did. http://album.hybridz.org/showphoto.php?photo=6309&limit=views The photo is about 4 years old. It looks a bit better now. With the 2+2 there is a kick up at the rear of the stock fuel tank and I just continued that angle up to the "roll pan". I am not ecpecting any down force but am hopeing the air wont get caught up in there anymore. Douglas -
There was a guy who swaped in a small block chevy into a legacy wagon selling the car here locally. Ran it in rear wheel drive only. I would guess that all the 4x4 assembly was removed. Douglas
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Just re read maximum boost last night. Looks like i can get away with 11 psi with good intercooling. Might have to do a water intercooling set up becuase of space and I think that will help a bit. Looking at a holset turbo at the moment. Garrets here are close to $2k. Bit rich for something that needs to be hidden from the wife. I am not in hurry so will just keep my eye out for a turbo thats suitable. Maybe get the mega squirt up and running first. Thanks for the input. Douglas
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This looks like a better one http://www.trademe.co.nz/Browse/Listing.aspx?id=171662986 Guess im am better off spending a few more buck now........then later replacing junk Douglas
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Thanks guys, I thoght it was a bit small. I really need to keep this as cheep as possable. The zed is eating money right now so just keeping my eye out for deals. The stock hp is 218 and tourque 228lb. Neat car, Has a close ratio dog leg 5 speed and lsd all standard. I will run a inteercooler. Thought I would be able to run more then 6psi. Will go back and read maximum boost .....again. Cheers, Douglas P.s. If any one comes across a good turbo for cheep, pls let me know. Shipping shouldnt be to big a deal or maybe we could send to my Dad in Atlanta.
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Howdy all. This is not z related but engine size is similar so hopefully someone can hekp out. I bought a 79 bmw 635csi about 6 weeks ago. Its a cool car but need MORE POWER! Thinking about a low boost turbo set up run by megasquirt. The engine is a euro spec M90 3.5L with a compression ratio of 9.3 to 1. I will run an intercooler and 95 octane fuel. I think I can get away with about 11 psi of boost. I would like boost to kick in aroun 2500 rpm if possable and make good power to 6500 rpm. I dont want to over heat the air at higher rpm so would give away a bit of low boost for better top end efficiency. Would this turbo do the trick? http://www.trademe.co.nz/Browse/Listing.aspx?id=170871867 I like the price. Forgot to add I would like about 350hp at crank. Cheers, Douglas
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Try it with larger lights and move them out to the sides a bit. Should give it that Le mans racer look. Douglas
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Looks like the runners on my 79 635csi. The bmw guys seem to prefer the later style manifolds for making more power. Probably due to the position of the throttle body. When they turbo this engine the best performers have the inlet manifols set up more like the traditional nissan one. I dont think you will gain much if anything. What you make up for in intercooling pipe you lose in manifold pipe and probably throttle responce. Douglas
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Rallycross beater - What car would you use and why?
ZROSSA replied to Lukaniuk's topic in Non Tech Board
Suzuki gti's do weird things on gravel and rough stuff. Snap lift of oversteer. Wicked on power understear. Really hard to drive fast off pavement. My wife had one when we first meet. Spun the thing time and time again! Douglas -
which way to angle radiator for better down force ?
ZROSSA replied to g00kb0i's topic in Windtunnel Test Results and Analysis
Have a look at some of the newer wrc cars. They have small vents but are fully ducted. I dont think you need that big a hole in the hood to make it work. Douglas -
Seat Brackets, Plate Rockers?
ZROSSA replied to JustinOlson's topic in Brakes, Wheels, Suspension and Chassis
You guys are taking the piss! I hope? Douglas -
Gm has sold its share in isuzu now. Guess it had some bad dept to cover! the turbo deisels i have driven have mostly been dogs off boost. With peak torque usually coming up at 1800 rpm it really wasnt a problem untill you have a big trailer or very large load. Once you have it moving your away again. I always found that i can drive a T.D. pretty hard and not lose to much economy. Petrol engine would drop to really low figs in similar situations. Douglas
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Very nice. Couple of round driving lights to breack it up a bit and your away! Douglas
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I think it was 385 ft/lp of torque. Not hp. the ones I looked at made around 100 hp/liter. Douglas
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Nascar seems to get 120 hp per liter with old tech and 2 valve heads. Dont see why we cant get that with two valve ohc motors. Guess we need to spin them to 9000 rpm? Douglas
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There are engines out there......I have posted them before in previous threads. DTM all use flat planes. Merc, Audi and opel(which uses a version of the northstar engine) Every time i go to the local dirt track- not often- i hear at least one small block with a 180 crank. Most of the IRL engine are flat plane. SOMEONE MAKE CRANKS FOR THESE! Probably a case of how bigs your wallet, but they are out there. There is an engineering co in the uk that I think makes these parts. Cant find there name right now but will keep looking. They seem to be able to make anything. Just need to check some back issuies of racecar engineering. Douglas
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Increased caster on rear wheels....
ZROSSA replied to ZROSSA's topic in Brakes, Wheels, Suspension and Chassis
Thanks again guys. I remember having read something about rear wheel caster in one of Carol Smiths books years ago. I havent really followed this up though and have welded in the stock position. Douglas -
I have been looking at the future G.M. diesel engines. They are going to put a v6 turbo diesel in the commodore next year. 2.9lt Around 250 hp and over 400 l/ft of torque. Sould be very nice. Almost as good as the german ones. Its going to be made by motor morordi (Spelling?) in Italy so not really a G.M. design. Looks like they will use this in the european spec cadillacs as well. New 4.5 lt twin turbo being put through its pases for the U.S light truck market as we speak. Should be a big improvement for you guys. Douglas