The official turbo build thread.

[alexw]

Awesome, Just found this today.

Good luck, looks like you're doing a great job!

[KangamangusDriver]

Nice build thread!

Im enjoying it!

Keep us posted!

I want to know how it pulls!!!!!!!!!!
What exactly did you run for managment???

Head gasket?

[Danny]

Sick plate

[So Live]

So... got the boost thing figured out. My spring must be 5psi. With my boost controller i can turn it up as much as i want.

So i did a little test with the fuel pump today. It only gets to about 85psi. Not exactly good enough for the 8psi i want to run or even enough for the 5 minimum i can run. i have to see what the fuel pressure is at 5psi. I got the BEGI set up for almost the lowest rate of gain and AFR is still pretty spot on and it doesnt get lean till about 5900rpm. So i think the BEGI is asking too much of the pump and causeing a dip in pressure, hence why it falls on its face.

Side note... I drove up to the Uconn car show today which is about an hour each way. The car performed flawlessly (up to 5krpm) and i really cant complain about much. It got me there fine and its exactly like it used to be under boost.

So it looks like im going to be buying a walbro 255 and a new fuel filter very soon :)

Lil pic from the show :


What intercooler officer? ;)

[So Live]

Right on dude. That sounds totally reasonable. The custom intake might not be worth your while at that hp level. If you friend has a holset hx35 or h1c or even hx40 with a smaller exhaust housing, you should do well with that.

The only thing i HATE about the modded stock tubi manifolds is that with a turbo of this size, its really, REALLY difficult to get the turbo low enough to clear the hood and far back enough to fit anything on the front of it. Theres also no place to mount the waste gate traditionally. I guess nothing is traditional in custom turbo systems though.

:)

So i did some serious work today. I borrowed my dads friends Innovate LM-1 wideband controller and it works like a fucking charm! (AEM sucks!!!!!!!)

So with that i tuned the BEGI pretty close. I had a hard time bleeding the coolant system but i got that figured out and it doesnt over heat now :)

I got all the body work back on good enough to call it a road worthy car again.

I only have one problem as of now, I see 5 psi boost at about 3800-4000 rpm. After this, it seems to fall on its face. It gets lean. (its about 13.0 +/- .5 untill around 5600 rpm) then it spikes to 15 - 16 range and the CEL flashes.

So it seems to be running out of fuel at 5500 rpm. Would this cause it to fall on its face and not build more boost? Or do i have two problems, fuel and a boost leak before the turbo?

Thanks guys and pics tomoro for sure.

[e30325ic]

I am puting a m52 crank assy in a 2.5 block. I am looking for M3 cams for it. I have a ZF trans. I have everything except a vanos unit. The engine I have is missing one. I will be ordering the bearings, rings, gaskets, and head studs soon. I have been told that 400hp is possible with the 413 box. I just wanted some first hand info to know which way to go. I am not settled on a turbo as of yet. I have a friend that does diesel perfromace work and has a garage full of turbos, I just need to get over there to rummage through everything. I may just get every thing running then go turbo later. I am a machinest by trade so making all the components that I need will be no problem. I am considering building an aluminum intake for the turbo setup. I have too many projects right now to persue this adventure too far at this time. I haver been following your build since it is similar to what I had in mind. I was planning of modifiing the stock tubular exhaust even before you didi. I had looked at MS but I was told with a chip and the 413 box 400hp is reasonable. I just want drivabiltyl. I have had the mega HP cars that are unruly on the street and I just dont want that. I fugure 400hp would be just what the Dr. ordered for what I want the car to be. I plan on doing a complete 5 lug conversion and big brakes. Any way you car is hot with the all black look.

[So Live]

lol... Right now all the electronics are 100% stock. Im using a BEGI FMU to help with the fuel needs. I have a megasquirt board that im still working on that ill use when im tired of 8 psi.

Plenty of people tune the 413 though. What motor do you have?

[Julien]

Awesome build Chris!!

. I want to try to hit about the 400hp mark. I dont want anytihg radical and I thing that would put me to where I want the driveabilty.

this made me lol

[e30325ic]

Nice looking build. I love the fact that you built all the pipes and stuff yourself. I am planning something along the same lines. What is the ECU set up that you are using. I was planning on using a stock 413 box with programming. I want to try to hit about the 400hp mark. I dont want anytihg radical and I thing that would put me to where I want the driveabilty. Details on the electronics would be great.

[So Live]

It just really makes me smile when i open my "garage" and see this:



Its going to be another big weekend i hope. Im borrowing one of my fathers friends Innovate LM-1 units so i can get the car running and driving for real. Im hoping to get it all squared away enough for me to go drive it for more than 5 minutes.

:)

[PiercedE30]

yea, multiplex's build is insane. 580 something horses with pretty much matching torque numbers.

[So Live]

Get used to your s50 first!!!

Have you seen Multiplex's build on bfc? How about turbomk4's on blowneuroz? both killer builds if you want some inspiration :)

ill get a vid when i have a wideband that functions correctly. I Learned a few things about that. If the exhaust leaks, the mixture could be too lean for the gauge to read it. If the exhaust isnt hot enough, the sensor might not be taking data yet. I have some things to work on.

I think i need to get some better gaskets for turbo and wastegate to the manifold cause i cant mill the flanges and the little copper ones dont do much on imperfect flanges. I need to check for more exhaust leaks. i need to bleed the coolant system so it doesnt get too hot to drive in 5 minutes.

:) Cheers!

[golde30]

need video. i want to turbo my s50 badly.

[So Live]

Thanks guys. Ill show up when its running right. Ive been meaning to go to RI. The bfc guys do the colt state part or something. My cars always apart or im busy haha.

[E30SPDFRK]

Awesome Chris! That turbo looks huge in there. Get it running right and bring it to some of the meets over here.