anyone have any experiance with boosting with the borg warner gm-1 turbo out of the early 90's diesel truck? im about to boost my stock b18c1 with one just seeing if anyone else has too.

 

Yep, and you'd hate it... Wantboost will explain why. He'll be hear shortly

 

it my first turbo build so im not looking for much...

 

Not a good turbo choice,

Has a big turbine side, will be a lag monster, dont expect boost until your almost out of rev's.

You need a different turbo.

 

The turbine side doesnt look to big...

 

told you nate, just get the STC GT3255 turbo I was going to send it go have TheShodan rebuild. lol

 

Compared to what?

Looks mean nothing, its all about the specs

I actually cant find the specs anywhere atm, but I do believe the compressor is roughly equivilent to a to4B s trim and the turbine is like a .78 a/r t4...which is huge, great for a 6.5 liter diesel, and a super lag monster on a honda motor.

If your on a budget, just sell that thing on ebay, and pick up a used holset hx35 or hy35, much more sensible choice

 

How much Charlie?? And how much will it cost to rebuild?

 

I don't have that pm any more I was looking for it. 350 just for the rebuild??

 

pm me here.

 

Has anyone actually had experience with this turbo??

 

If your determined to try it then just do it.

You don't need someone who has actually used one to tell you that the turbine is huge and spool is going to suck

 

How bad will the spool be??

 

youll bog 1st and 2nd if its too big and just be a pain to drive. find a 50 / 57trim or the gt32.

 

Don't do it i had the same turbo and my car ran like a pig it's too big for a sock setup

 

what manifold r u going with

 

A off brand log manifold

 

is the holset hx35 turbo off like a 95 cummins?

 

Haha and here I am

The gm1-8 turbos all share the same turbine wheel and compressor wheel as far as size (inducer/exducer of both wheels), what differs between them is the housing (both compressor and turbine) design and size, most Honda guys use the gm5-8 due to the design of the housings, as some of the gm-x series have weird compressor and turbine housings that would be hard to use

Do you have any pictures of the actual turbo you are using? Iirc the gm-1 has very small housings overall

 

There it is sitting next to a eBay 57 trim turbo .50 a/r intake .63 a/r exhaust. Gm-1 is on the right

 

Here's a good read on the IHI Rhc6/GM-X series

All the info you need

http://www.dsmtuners.com/forums/newb...6-5-chevy.html

The entire Gmx line flows a little over 40lb/min, something like 45ish

The hardest thing will be making a downpipe, since you'll need someone to cut a flange based off the turbine exit gasket and then go from there, it's a very unusual shape and will require clever fabrication

However I feel if the price is right for the turbo, use it. It will be a decent 350-375hp producing turbo.

 

Why wouldn't this turbo work? Or am I thinking of a different turbo? M10 or something? Past my bed time...hehe.

 

It will work well, I have used many used OEM turbos before on various builds.

The gm1-8 series can all best be related to by a Garrett t04e 57trim unit, similar wheel profiles and flows, same overall footprint size and t04e "style" compressor cover. However the turbine housing has a funky outlet flange.

 

Yeah the outlit flange is weird but It came with a downpipe flange I just need to find or make a gasket for it....

 

go buy a small sheet of copper from some place, or order one

We've made gaskets out of coke cans and they work perfectly