The Top DSM Community on the Web

For 1990-1999 Mitsubishi Eclipse, Eagle Talon, Plymouth Laser, and Galant VR-4 Owners. Log in to remove most ads.

Register Log in
Please Support Fuel Injector Clinic
Please Support Rix Racing

Borg Warner GM-4 ihi Turbo help???

This site may earn a commission from merchant
affiliate links, including eBay, Amazon, and others.

This site may earn a commission from merchant affiliate links, including eBay, Amazon, and others.

jongraack

jongraack

10+ Year Contributor
154
1
Jul 14, 2011
Saint Joseph, Michigan
Hey. This is in regards to a Borg Warner GM-4 IHI that came off a 1995 diesel. Just curious if anyone has ran this turbo on their dsm? I got one in excellent condition for free but I don't know much about one of these being ran on a dsm and I can't find much info about people using them. I'm looking for information about how to make this turbo work on a dsm and what kind of performance it can pull off? Any information would be helpful. Thanks!!!
 
Last edited:
jongraack said:
Unfortunately, none of the links explain how to use this turbo on the 4g63t.
Click to expand...

It's the same as any other turbo. You need a manifold, downpipe/o2 housing, oil feed, oil drain, IC pipe and an intake pipe. Performance wise, more then likely it will be laggy and not make more power then a 16g could. GM4's sucked on the 6.5 diesel's and they more then likely won't do much better on our cars. I have a couple GM4's and GM8's.
 
e85_4g63 said:
It's the same as any other turbo. You need a manifold, downpipe/o2 housing, oil feed, oil drain, IC pipe and an intake pipe. Performance wise, more then likely it will be laggy and not make more power then a 16g could. GM4's sucked on the 6.5 diesel's and they more then likely won't do much better on our cars. I have a couple GM4's and GM8's.
Click to expand...

Thanks for the reply. I know it's the same as any other turbo but I was looking for people that know about using them on the dsm. Like I said befor, I got it for free and was curious about the best way to use it on a dsm. I have heard that this turbo may be laggy but that doesn't tell me facts about using it on a dsm. I'm sure theres ways around the lag but being that I am not a pro in the turbo world, I figured I'd ask. Thanks!!!
 
GM4 is the designation- the turbo itself is called a IHI RHC6. All that "GM1-8" means is that the housings are clocked differently to fit various applications of the 6.5 GM diesel...it has nothing to do with what type of turbo it is. Keep in mind this is an application-built turbo, so there are zero choices as far as different housing options go- what you see is what you get.

Get in touch with talonalex92....he's apparently running (or has run) a turbo similar to this. Not sure what type of results or how difficult the fitment is in regards to possible gains over a DSM bolt-on turbo.
 
I ran the gm8 for a little while. Pretty basic install, t3 manifold, 1/4 npt feed line fitting, Garret return line can work. The only thing that was a pain was the down pipe. Due to the way the stock setup is, I had to take the turbine housing to be milled flat, other than that its no different than anything else. I purchased the down pipe flange from a site called blaast performance. Its not a laggy turbo by any means either, I would say spool was a little later than a e316.

But I wont be after I send you the h1e Justin!
 
Last edited:
JusMX141 said:
GM4 is the designation- the turbo itself is called a IHI RHC6. All that "GM1-8" means is that the housings are clocked differently to fit various applications of the 6.5 GM diesel...it has nothing to do with what type of turbo it is. Keep in mind this is an application-built turbo, so there are zero choices as far as different housing options go- what you see is what you get.

Get in touch with talonalex92....he's apparently running (or has run) a turbo similar to this. Not sure what type of results or how difficult the fitment is in regards to possible gains over a DSM bolt-on turbo.
Click to expand...

Thanks alot for the info. You have made my choice much easier by stating this turbo is application-built and cannot accept different housings. I'm going to go ahead and sell it then. Thanks!!!
 
And as for fitment, its not an overly large turbo to begin with, so there aren't any issues that I could see you having. And I wouldn't say this is really any better or worse than a bolt on 20g or something of the like, I just acquired it for free and wanted to try it. If you can't weld or fabricate things, im sure there are a lot of better options. I did however end up getting a decent penny on CL for it.
 
If the compressor maps are accurate, then the GM4 doesn't flow for shit. 190cfm at a 2.0 pressure ratio is next to nothing. Bolt-on 16G's will outflow it all day long. That being said, I can't speak to the accuracy of the maps, but that's the info that's out there.
 
I'll see if i can't find it again. The wheels mic'd at promising sizes so I gave it a shot. This was almost a year ago and have since ditched it for a Holset, but I'll see if I can't find the map.
 
You must log in or register to reply here.

Similar threads

spyderdrifter
2G IHI RHC6 / Borg Warner GM Turbo info?
Replies
7
Views
6K
spyderdrifter
spyderdrifter
borg warner turbo?
2
Replies
31
Views
4K
Steve93Talon
Steve93Talon
help identify borg warner turbo
Replies
17
Views
19K
dsmusmc
dsmusmc
Borg Warner GM8?
Replies
4
Views
7K
Archer Fabrications
Archer Fabrications
jakk220
Thread pitch for Borg Warner gm-8
Replies
0
Views
963
jakk220
jakk220
Support Vendors who Support the DSM Community
Boosted Fabrication ECM Tuning ExtremePSI Fuel Injector Clinic Innovation Products Jacks Transmissions JNZ Tuning Kiggly Racing Morrison Fabrications MyMitsubishiStore.com RixRacing RockAuto RTM Racing STM Tuned

Latest posts

Build Thread Updates

Vendor Updates

Latest Classifieds

Back
Top