Stock GTR turbos on a 5.0 V8

[DAN00H]

Hi All

I'm upgrading the turbos on my GTR, and I have a friend that wants to put them on a 5.0 V8. I'm wanting to get peoples thoughts (flow rates).

He revs the v8 to 5000rpm max, wants low to mid range power, so says he wants the boost from ~1200 - 4200rpm. He intends to only run stock GTR boost (6 - 8psi) no I/C.

His reason for thinking about the GTR turbos is that I have them and it will not cost him anything (he can reverse the factory manifolds and front mount the turbos, he has someone that can knock up a dump to the existing exh, make adapter flanges, pipes to / from the turbos etc, etc...). His parents own a ford dealership, so can do all the work after hours (tuning etc).

Sounds a bit crazy I know (I told him that he should be using bigger turbos), but he is wanting to do it just for a bit of fun.

Any thoughts?

[666DAN]

yeah they'll be too small for that capacity...they'll definately spool very quickly...but run out of puff too early.

[Bass Junky]

666Dan is probably right.

But if you want truck loads of low down punch, they would be ideal.

But maybe...... Let's do a little bit of rough maths.

2.6 ltr x 9000rpm = 23,400

5.0 ltr x 5000 rpm = 25,000

They might be alright.....

What you would need to do is open the wastegate hole heaps so that extra exhaust gas can escape easily....

Nothing quite like the sound of a twin turboed V8!!

BASS OUT

[N I B]

This setup on a 3.8 V6 commodore was very strong till 6500rpm so on a 5.0L at 5000 i cant see why he wouldnt have one hell of a bottom to mid range grunter.

[PTR33]

would make a good engine for a burnout car with all that low end punch :burnout:

[DAN00H]

Yeah, I will post the results once it is all done. As he is not after something to win dyno comps, he's pretty keen to try them out.

I think it will be pretty interesting on the burnout pad! He want's good 0 - 100km response, so this might work...

I think it will be about 1 month away, but will try to get a dyno graph to accompany the results : )