I'm looking to go VNT on my om602. Since I'm building just solely for speed, I want the best possible vnt easily found.


Some semi run a VNT setup - along these lines!

How about the Holset HE351VE? It's not Semi big, but it's big enough to flow more air than I bet you can use, and it has a t3 flange.

Just search for "Holset" on Ebay, there are a ton of them on there.

it has a t3 flange.

Almost, its slightly bigger.

You have anything from the tiny GT1542V all the way up to Holset's huge HE551V/VE.

Almost, its slightly bigger.

You have anything from the tiny GT1542V all the way up to Holset's huge HE551V/VE.

what would the max PSI be, and at what rpm does it get violent?

The HE551V/VE? It can push 50psi on a 14.0L Cummins ISX and would light up around 7000rpm on your small engine.

Even the HE341VE used on the 6.7L Cummins would be far more than your engine could handle. Unless you are aiming for 500+hp, anything bigger than a Garret GT3788V (Powerstroke 6.0L and Intertrashional DT466E) would be a waste of time. Even the E320CDI's GT2359V will supply enough air for your engine to make 300hp.

Bigger is not better when it comes to turbos. You need to find what best matches your engine's specs and airflow needs, not the biggest you can throw on it.

Yah, it does help to have enough exhaust flow to spin the thing.

Where the hell do you get all of this turbo model availability/knowledge Forced?

Where the hell do you get all of this turbo model availability/knowledge Forced?

I cant seem to find much on VGT's anywhere...

GT3788V it is. I was shooting for around 300-350hp.

Where the hell do you get all of this turbo model availability/knowledge Forced?

Searching the internet/forums and working on trucks that have them.

GT3788V it is. I was shooting for around 300-350hp.
Even that is much too big for your engine and those power goals, it would even be too big for a 603 with those power goals (There is a 603 in Finland making 415hp with that turbo). Keep an eye on eBay, there is often a GT3576V with a buy it now between $175-250 that would be about perfect for what you need.

I think the GT3788V is a pedastal mount rather than a flange mount. Personally, on an inline engine, I'd rather have the flange mount. You'll end up having to fabricate a pretty hefty side mount on the engine with the oil supply and returns built in. This turbo also has oil pressure controlled vanes with a computer controlled valve so you'll have to come up with a way to either convert it or control it.

I ran some numbers assuming the following:

OM602
2497cc
350HP goal
Decent intercooler
4750 RPM peak HP

Result:

Wa = 49.77 IIc = 3.93

Plug these two numbers into the compressor maps of turbo's you're interested in to see how they compare.

I think the GT3788V is a pedestal mount rather than a flange mount.

The Powerjoke's turbo is pedestal mounted, but the Intertrashional's is a normal flange mounted.

OK, thanks. Never seen the other version.

The Powerjoke's turbo is pedestal mounted, but the Intertrashional's is a normal flange mounted.
Is that the version that Brandon bought? That would certainly make mounting it easier!

This is the kind of work everyone should aim for.

http://www.turbotec.com/galleria/mercedes300td.html

This is the kind of work everyone should aim for.

http://www.turbotec.com/galleria/mercedes300td.html

That looks like the 400HP car with the GT37! :cool:

What is that valve just after the compressor housing?

What is that valve just after the compressor housing?

Blow off valve. One of the very rare instances its actually useful on a diesel. The GT37 has so much rotating mass and the plumbing is so short that would surge really bad without it.

I have the hookup with turbonetics now.



T3/T4 GTK ceramic ball-bearing should spool just fine. and NO vanes to ghetto rig.

My turbo cost $90 and I'll still out-spool you. :D

Mine only cost $125 and it will still outspool it.

Mine only cost $125 and it will still outspool it.

mine will flow more CFM.

mine will flow more CFM.

For another $250 I can buy a GT3577V that will flow more CFM and still spool up quicker. For $500 I can get an HE551V that would flow more CFM than 3 of your T3/T4 turbos and spool just as quick.