big ole turbo. any thoughts?
 

just wantin some input on what this turbo is gonna perform like. it's a 6.2L GM deisel turbo, and there's no specs on it, but it says that it's a borg warner/ihi, and it looks like it has a standard t3 exhast flange. the inlet is 3 inches, and the outles is 2.5 on the compressor. what do you think this thing'll spool up by?? should i try runin it?

Re: big ole turbo. any thoughts?
 

what motor is this going on?? i think it would be a beast on a B-series motor.

Re: big ole turbo. any thoughts?
 

I think you are gonna have a hard time spooling it no matter what motor you have. However, I know that Ghettoturbo had some type of diesel turbo on his civic (not sure what motor), so you might want to talk to him about it. I'm sure people will chime in here though

Re: big ole turbo. any thoughts?
 

What spec is it? GM4, GM5, GM6, etc?

I have a Borg Warner GM8 that needs a rebuild. After searching I came up with these specs:

.60 A/R turbine
.70 A/R compressor w/46 trim

Re: big ole turbo. any thoughts?
 

he had a b16 ;)

Re: big ole turbo. any thoughts?
 

it's goin onto a b16. i'll look at what spec it is later, as it's sittin at a buddies house right now. thanks guys

Re: big ole turbo. any thoughts?
 

i had the gm4 :)....good stuff on a b-series imo

Re: big ole turbo. any thoughts?
 

it's a gm9. no clue wtf that means. how bout u guys?

Re: big ole turbo. any thoughts?
 

i personally wouldn't want anything larger than a .63 a/r turbine on a stock b series motor :-\

Re: big ole turbo. any thoughts?
 

Do a google search for G Pop Shop. They rebuild turbos and answered some questions about my GM8. Shoot them an email. They might be able to tell you the specs on that thing.

Re: big ole turbo. any thoughts?
 

i can't find ----. still got the e-mail addy?

Re: big ole turbo. any thoughts?
 

maybe its time for you to deisgn a TT setup with a smaller turbo lol..... Im sure you could get it to spool, but the question is if it would be useable. How fun would it be to have a stock b16 until you hit 7k? Im totally guessing but i would think a GM4 is smaller than a GM9? So it could be a bit much, but if not im sure that thing would flow like a mofo :) Good luck!

Re: big ole turbo. any thoughts?
 

Here ya go: gpopshop@sbcglobal.net

Re: big ole turbo. any thoughts?
 

im pretty sure but not certain that they are all the same or similar size, the number just went up as they got newer i think

Re: big ole turbo. any thoughts?
 

That's what I was thinking too.

Re: big ole turbo. any thoughts?
 

Borg Warner / IHI RHC6.
Don't use it. The first Lexus ES 300 turboed uses the newer series (GM-8) with a slightly better spool than the older one you have. They're all good for 350-400bhp.

The turbo spools at 3750rpm, and makes 5psi by 4000rpm, 14.7 by 4500rpm. Why is that important? He's got a 240-250bhp 3.0L v6 N/A, that makes 85% of it's torque @ 2500rpm.


http://www.turbotoyota.com/engine091205.jpg


If he can't spool it in a reasonable amount of time with three-five times the low end powerband worth of exhaust energy; there is no way in hell that you are going to be driveable on your i4.



That turbo really needs a v8 over 4.0L in displacement to get it moving.
Sell it & buy something that will actually get moving before you're bouncing off your rev limit.

Re: big ole turbo. any thoughts?
 

Good info.

Re: big ole turbo. any thoughts?
 

an overly large turbo would not really make the car undriveable, just unresponsive down low. I always felt that turbos that spool very quickly kinda made cars undriveable, whereas a big turbo made for a very civil daily driver. As far as the issue of spooling/building boost you have to remember that a b16 probably has a few thousand more rpm to play with than that v6 does (just guessing, i dont feel like looking it up). I had a gm4 on a bone stock b16 and then again on it with slightly lower compression and i felt it performed well, although a set of cams or headwork would have made the motor suit the turbo more i think. I am by no means an expert, but if the turbo is cheap, i always say go for it and see how you like it

Re: big ole turbo. any thoughts?
 

^ Same here. I'll eventually get this thing rebuilt and toss it on and see what it can do.

Re: big ole turbo. any thoughts?
 

well, i think i'll give it a try and see how it goes. if anuthing i'll just get somethin else if i don't like it

Re: big ole turbo. any thoughts?
 

I wouldnt even hesitate... put it on there and see what happens. Big turbos that lag is just a form of traction control.

Re: big ole turbo. any thoughts?
 

True

Aren't you using a fairly large turbo on your hatch?

Re: big ole turbo. any thoughts?
 

plus its fun to have to hold on tight when they break loose at the top of the gear :)

Re: big ole turbo. any thoughts?
 

Yup, .60cold/1.0hot.. I'm actually upgrading to a .70/.84

Re: big ole turbo. any thoughts?
 

Sweet. I'd be interested in seeing how that spools given those specs are almost identical to the GM8 and I have a DOHC ZC as well.

Re: big ole turbo. any thoughts?
 

those specs are nothing like the specs the other guy gave for the gm diesel turbos....they have smaller turbines than compressors...

Re: big ole turbo. any thoughts?
 

Yeah. Don't know what I was thinking.

Re: big ole turbo. any thoughts?
 

I still think this is a really bad idea for a car that's not going to live on a drag strip. heh. ;)

Either way it oughta be interesting as hell!

Re: big ole turbo. any thoughts?
 

the only problem i'm seein w/ this thing is that on the exhaust side has the internal wastegate hole recessed down into the housing a little bit and i'm not quite sure how i'm gonna block it off and run an external gate. any thoughts?
http://www.we-todd-did-racing.com/we...MXk1NDE%3D.jpg

Re: big ole turbo. any thoughts?
 

We just welded it shut. It's no big deal.

Re: big ole turbo. any thoughts?
 

there's no internal gate flapper to weld. maybe jsut blast some weld around the area to make it even w/ the top part of the flange?

Re: big ole turbo. any thoughts?
 

Its going to perform like a big turbo.

Re: big ole turbo. any thoughts?
 

if the flapper opens outwards, when you make your downpipe flange, just drill and tap a hole for a bolt and force it shut with a bolt.

Re: big ole turbo. any thoughts?
 

there's no flapper on it. otherwise i would
ya think????

Re: big ole turbo. any thoughts?
 

How big is the hole? I would just get a small piece of sheet metal and weld it on there. Use your head son ;)

Re: big ole turbo. any thoughts?
 

I was playing with one of those turbo's not sure what gm# it was but I seem to rememer it being about the size of a garret t04e 50trim. which would be a quite streetable turbo. lag can be fixed with ignition retard and a two step. I have a holset hx35w on my 2.3L pos headed 4cyl and its noticibly larger than the turbo your talking about and I see full boost by 3700rpms oh and full boost for me is 23psi right now. shooting for 30 once I get the 800cc injectors in. only 7.8:1 compression. and at 6000+ ft elevation. and with the two step at 3000rpms and 16degrees of retard I see 11psi. no load.:)