Are the GT series turbos to big for me?

[JeanDSM]

I was thinking on buying an evo16G for my 97GST. the turbo says for 360whp people but i see most people make 290 to 310whp at about 21psi with some tunning. but i want about 350 whp. I found this place where they sell a GT3251E twin ball bearing. it says up to 500hp Turbine 64mm/73trim Compresor 71mm/52trim and the option of .48 or .63A/R for only $818
Im going to buy Slow boy racing FMIC a MAFT and then DSMlink. Is this an efficient turbo for about 20psi on stock 7 bolt? Then i will have a fully built 6 bolt. thats why i dont want to buy a small turbo now and then need to change it.

 

[LA97GST]

If you are going for a good straight line speed i would remend a 60-1. This turbo will not only make HUGE power but it will spool up slow enough to let ou get SOME grip. This is a very efficent turbo for us FWD guys. BEWARE this turbo should be used in moderation. It can be harmful to your engine if you do not have supporting mod or tune like Ray Charles.

 

[JeanDSM]

but do i need a built engine for this turbo. its for daily use and street use. i would like to see at least 110mph on the 1/4mile
what can i expect at 20psi on this turbo?

The issue is that i dont want a 16g cus maybe then it will be to small for me.
and i dont want a big turbo cus then its like overkill and it wont be efficient.

 

[Steve93Talon]

20g or T04B-Vtrim. Both will make 400+WHP, both will get you 11s and trap over 115 easily, both will spool well and pull nicely at 20psi on pump gas.

 

[daren_p]

I think an evoIII should be able to meet your goal of 350 whp @ 21 psi, if you have the proper supporting mods, a set of cams & are PROPERLY TUNED. The guys that are making the 290 -310 hp you methioned are usually on abit less boost 18 - 19 psi and alot of them are probably awd, you have the advantage of being fwd & who knows how they were tuned, it looks like your getting dsmlink so thats defently a step in the right direction. If lag doesn't bother you then a 50 trim (maybe an fp green) or a 20g will defently get you 350 whp, with the potential of going 400++.

Just as a note the best log I got out of my t25 @ 16 psi was 25.3 lb/min & the flow was usually around 24.8. With my evoII I logged 31.5 lb/min @ 15 psi. So @ 1 psi less I'm flowing 6.2 lb/min more with the evo, which is approx equal to 62 hp or so.

 

[ShapeGSX]

but do i need a built engine for this turbo. its for daily use and street use. i would like to see at least 110mph on the 1/4mile
what can i expect at 20psi on this turbo?

The issue is that i dont want a 16g cus maybe then it will be to small for me.
and i dont want a big turbo cus then its like overkill and it wont be efficient.

110mph is a piece of cake with an Evo III 16G. It is 120mph that is hard to reach.

My car has an Evo III 16G, and I'm running 117mph in my AWD.

 

[oldman]

20g or T04B-Vtrim. Both will make 400+WHP, both will get you 11s and trap over 115 easily, both will spool well and pull nicely at 20psi on pump gas.

20G yes but do you have any numbers or data to back up the to4b-v claim?

 

[Steve93Talon]

20G yes but do you have any numbers or data to back up the to4b-v claim?

Sure. My friend Scott bolted it on Wednesday night, went to the track Friday night and ran 11.88 @ 117. Full weight, stock cams, internal gate. He won $100 from the Turbo Challenge in the process:

http://www.turbochallenge.com/scott.htm

I also put one on a 2G that was mostly stock, and it was pretty impressive even at like 16-18psi.

Of course, I'm still partial to the 20g

 

[notractiongst]

20G yes but do you have any numbers or data to back up the to4b-v claim?

I missed second gear and trapped 112 on a internally gated v trim @ 19-20 psi and 272s rest of the motor was stock
Now im running an SCM 61 with stock cams and it pulls harder then the vtrim with 272s

 

[oldman]

Both are very impressive runs, let's just hope that those 270 degree thrust bearings hold up.

 

[poorboyracing]

The pte scm61 turbo actually comes with a 360 degree thrust bearings . At least the new ones does.

 

[oldman]

The pte scm61 turbo actually comes with a 360 degree thrust bearings . At least the new ones does.

You're correct but we were talking about T04b V-trim.