Are you sure?

From SC42 all turbos(standard location) using Garrett GT30 core and rotated GT30 with 63AR work well on 2.0L


Jura

 

any answer kev

 

Yes mate im certain,i considered all avenues before going down the route i have taken with the turbo choice on a 2.0ltr car and the GT30 would be too laggy,Im sure Kev will confirm when he see`s the post.

 

Hi,

on a Subaru we have not seen 600 BHP on V power, we have seen over 600 BHP with a 20% meth mix.

We have seen 595 BHP on an evo running straight V power which is pretty close.

Cheers
Kev

 

Hi Kev any info on my question?

 

is yours a built engine? 2.1? of so what boost you running mate?

 

No mate its a JDM v9 sti bottom end on sti version 5/6 heads running 1.7bar on vpower and 1.85bar on 20% meth/vpower.

 

I'm with Jura on this a .63 'zorst housing on a 2.0 should be fine but running a GR30R on a standard (albeit strong), bottom end is a waste of time as it will eat it up and spit it out. Think you have made the right choice given the limitation of your set up

 

cool, looking to push my sc46 with a 2.1 on 14mm studs to around 2.0-2.2 bar with meth, should be interesting

 

Has anyone got any back to back direct comparison graphs of a GT35R billet VS Non billet on a 2.1 if possible?

 

Ronjeremy I'm getting mapped thurs on a sc40 on my type r v3 standard box and internals. Fmic, 3 inch exhaust,big injectors , gr specs matched Harvey up pipe, all ur normal mods I can't wait . Il let u no how I got on and graphs ect Rob

 

Cheers rob that's exactly what I'm looking at.

 

If you're going to swap Omar, go for a Billet 30 on a .63 for road work.
If you wanted to be really clever about it, get a V banded rotated setup and one of each turbo with V band exhaust housings.
Then you could swap to the 35 for drag racing and back to the 30 for road effortlessly and just run CALs for each in your Syvecs

 

Interesting isnt the word,it should be absolutely monsterous on a 2.1 running that kind of boost.

 

I hope so, just hope it don't tempt me to go gt30 rotated

 

Out of interest, what's the A/R of a TD05H 20g (or turbos based on it)?

Is it 0.63, 0.73, 0.89? What?

 

Depends on your exhaust housing,but usual conversion is

6 cm2 = 0.41 A/R
7 cm2 = 0.49 A/R
8 cm2 = 0.57 A/R
9 cm2 = 0.65 A/R
10 cm2 = 0.73 A/R
11 cm2 = 0.81 A/R
12 cm2 = 0.89 A/R


This can help

http://www.stealth316.com/2-turboguide.htm

or this

http://forums.nasioc.com/forums/show...78&postcount=4


Jura

 

Cheers J.

Those exh. housing/AR relationships are helpful/interesting.

Looks like 20g based turbos are 7cm^2 @ 0.49 A/R

 

dont know what to do now lol get billett 35r run on just v power to get the figures i want or the gt30 on meth desicions desicions

 

What`s your engine spec and what is the car going to be primarily used for matey.

 

2.1 and a GT30 billet is a hard combination to beat imo ,for a fast road car.
If your going forged/rotated route that is.

 

Good idea

 

From all the results ive seen and all the graphs ive studied of this combination i totally agree with you pete,i think anything bigger like a GT35 is better suited to a 2.33/2.35/2.5 etc,certainly on a road car anyway.

 

Hi,

if you are happy to run 20% meth go for the GT30 billet, spool will be so much better than the GT35.

cheers
Kev

 

when it comes to the GT30 on a 2.1 whats the difference in performance in the 0.63 and the 0.82

 

getting mine back soon hoping for 600 bhp GT30 billet 2.1 20% meth

 

With 0.63AR you will have better spool up,with 0.82 you will have more top end and you will sacrifice the spool up




Jura

 

so for track based would you be looking at the .82 or is the difference minimal the .63 spool up option is better?

 

I'd recommend the .63 for you Chris, you wont need the .82 as it'll be plenty fast enough on the small housing.

 

I'm running similar spec to u m8 but fully forged bottom end but with version 4 stu heads and looking for a 500 break classic so ur sc 42 is it? Good spool I was going to get sc46 but surprise the 42would be less laggy