Turbo charging a 6.2 N/A GM Diesel-what size turbo?

[turbovanman²]

Alot of guys use the GM 6.5 turbo setup with the Borg Warner turbo, which is close to the Holset in size but can't find the specs on the BW. Anyhow, I wil be doing a remote setup on my van due to its 10 times easier and you can't run the regular 6.5 turbo setup due to no space. 10 psi non intercooled is the max with the BW turbo so will a T04E 50 trim, stage III wheel and .63 housing be enough? I can always get a larger a/r ex housing?

[Clay]

cant leave anything alone can you????????

[SL#189]

opcorn:

I'm curious on this as well

[turbovanman²]

cant leave anything alone can you????????

Nope and have you ever DRIVEN an N/A 6.2? it bloody awful. I will have the intake and IP done, headers, 2.5 inch mandrel y-pipe and 3 inch back so adding a turbo will be a piece of cake.

[Clay]

Yeah, one time. thats all it took. POS GM diesels!

[turbovanman²]

Yeah, one time. thats all it took. POS GM diesels!

Hahhaaa, apart from the lack of power, I like it. Diesel is cheaper by 25 cents a litre, less maintenace and a heavy GetAWay van I get 20 mpg.

[Aries_Turbo]

are you going to turn up the fuel then too?

actually how do you tune a diesel. I assume you turn up the fuel till it cant burn anymore and it makes no more power, then you turn up the boost and keep an eye on the egts and af?

Brian

[turbovanman²]

are you going to turn up the fuel then too?

actually how do you tune a diesel. I assume you turn up the fuel till it cant burn anymore and it makes no more power, then you turn up the boost and keep an eye on the egts and af?

Brian

Yep, I have a different IP I am putting on soon, its off a Non egr engine and they put out more fuel-I have a EGR engine right now, C code. EGR less are J codes and the J code intakes flow alot better too. Basically, you turn an adjustment screw and watch your EGT's at wot. EGT's are backwards on a Diesel, lean is lower EGT's which isn't bad, richer makes the EGT's go up and melt city. I believe its around 1000-1200 when you hear BOOM.

[Aries_Turbo]

so does the turbo lean it out then and lower the egts?

Brian

[turbovanman²]

so does the turbo lean it out then and lower the egts?

Brian

As far as I have read, yes, but of course, you make less power, hence turning up the IP to compensate.

[Aries_Turbo]

yeah but it seems that youd get to a point where there is alot more fuel going in but its lean enough that its cooler but there is still more power than to begin with.

Brian

[turbovanman²]

yeah but it seems that youd get to a point where there is alot more fuel going in but its lean enough that its cooler but there is still more power than to begin with.

Brian

Not sure, all I know is they do it all the time and they just turn the IP up and it works. You can't go too far otherwise Kaboom.

[Frank]

I wouldnt bother with the BW... go for the basic upgraded Holset that the Cummins guys use.

[turbovanman²]

I wouldnt bother with the BW... go for the basic upgraded Holset that the Cummins guys use.

I want to use my old T3/T4? will it work? bigger a/r ex housing needed?

[Frank]

I think it is way to small because the design is not such to support it. If it was a T3/T04B it might be better.

[turbovanman²]

Even though I am not going for huge gains, just some more power?

If that won't work, I'll just get the GM turbo, there pretty cheap and I know they give good power up to 10 psi, which is all I can run with that turbo and current engine setup.

[Frank]

Then do that. I think that 50 trim will be way to small.

[turbovanman²]

Ok, thanks.

What size comp wheel do you think would work?

[Aries_Turbo]

the compressor isnt the issue. its the exhaust side thats too small. .63 stg 2 for a 6.5L motor? thats way too small. the 50 trim part wouldnt be too bad but it might be a little small.

Brian

[Frank]

Just get a holset... 35 varient or a 40