Rb25det Turbo Upgrade

[D_Stirls]

if you went for a twin scroll GT3071R with a 0.78 housing you could get close to 300kw with cams and it would have a stupid amount of response. but this will be an expensive route as you need a twin scroll exhaust housing and you need twin gates to do it properly.

Another turbo that people haven't suggested is ether a TD06SL2-20G for just under 300kw or a T67 for over 300 with standard cams. Both these will need external gates as both the Trust and T3 flanged housings are external gate housings.

[D_Stirls]

reason i ask is volk34 had his car on the same dyna pack dyno as you a couple weeks back and made 210kw. then today at the SAU-SA dyno day at willals

his car made 162rwkw. thats a 48kw difference between his 2 dyno runs

sorry to use your car as an example volk

There is something else going on there, in the past with the older version there was around 10% difference between dyna pack dynos and other drive on chassis dynos due to no correction for wheel slippage, but the newer versions seem to be pretty much the same as most mainlines.

Your talking about a 24% difference which sounds to me like something else is wrong. Also 162 would be just under what would be expected from a standard auto R34 (don't know what car his is) or is about right for a stock untouched R33. so what mods is he running, has his car been tuned? is it running more boost? was it running the same boost in Willals dyno?

Edited September 5, 2010 by D_Stirls

[Simon-S14]

his car has boost increased and nistune. so 210 rwkw is about right on the money for the power it should be putting out. 163 is far lower then expected and i would say something else is the issue

[wasnt me]

There is something else going on there, in the past with the older version there was around 10% difference between dyna pack dynos and other drive on chassis dynos due to no correction for wheel slippage, but the newer versions seem to be pretty much the same as most mainlines.

Your talking about a 24% difference which sounds to me like something else is wrong. Also 162 would be just under what would be expected from a standard auto R34 (don't know what car his is) or is about right for a stock untouched R33. so what mods is he running, has his car been tuned? is it running more boost? was it running the same boost in Willals dyno?

i think he has a auto r34 gtt. as for the other stuff i cant comment because i dont know.

[jrm]

I got 182.7kw on the same dyno (R34 manual, 3" exhaust, peak of 8.5psi, untuned ECU) on the same day ..

[Simon-S14]

bit of variation thats for sure

[wasnt me]

hypergear is a business trader. thus complaints should be taken up with him via PM or the mods. not a public forum imo.

[gun_33]

thanks for all of your responses, as i had suspected gt3076 with .86 will be the one. i have all suporting mods and an eye out for some poncams. hopefully see and introduce myself next dyno day thanks.

[SLED]

"loksta6" you are now on notice and will receive an official warning..........followed by a ban if this slander towards a business continues.

Your post has been deleted but have attached a link to your warning fyi.

If anyone has an issue with a business, take it up with them but KEEP IT OUT OF HERE!!

[Krishy]

thanks for all of your responses, as i had suspected gt3076 with .86 will be the one. i have all suporting mods and an eye out for some poncams. hopefully see and introduce myself next dyno day thanks.

i am pretty much going the same way mate

[Simon-S14]

Nooo get the .63 rear. Response Ftw

[Krishy]

.63 rear housing should see me 300rwkw on 25??? mind you its going to be internal gated

[wasnt me]

I'd get the .82 again if I was to buy another turbo. Response difference between .63 and .82 would only be a couple of hundred rpm max. And your going down the E85 route so the better flowing rear will make a world of difference when you start running higher boost levels. Come to think of it. Just get the 1.06

[Krishy]

after doing a bit more of a research your right Luke......63 and .82 rear housings dont have a world of difference in regards to response.....1.06 is in a league of its own isnt it???

[Simon-S14]

.63 rear housing should see me 300rwkw on 25??? mind you its going to be internal gated

ahh internally gated's a different story. get the .82.. you'll run into overboost issues with the smaller housing and IW.

FWIW mine is ex gated type .63 and makes 360 rwkw so the housing can flow more then 300 rwkw thats for sure.

[Harey]

Yup was just about to post that, go the 0.82 if its internally gated.

[Krishy]

cool thanks guys.....geez i have almost hijacked this thread

[RubyRS4]

While on the topic of turbo upgrades, I was looking into mix matching housings, staring with my 2530 ...

I'm thinking of upgrading the compressor side of my HKS GT2530 turbo.

The turbine side of the 2530 atm is a 76 trim (53.8 major - 47.0 exducer) wheel and 0.64AR T3 housing which I was going to keep.

Thinking of throwing on, on the compressor side ...

Garrett T04S upgrade kit

wheel: 59 / 76 / 60 trim

housing: AR70 (rated to 550hp)

Now the 2530 is internally gated. I'm looking for a responsive daily driven turbo for 250+awkw, with enough poke for track days and time attacks.

There is another T04S compressor kit, which may be too big for the 76 trim turbine ...

Garrett T04S upgrade kit

wheel: 61.4 / 82 / 56 trim

housing: AR70 (rated to 600hp).

Thoughts?

[D_Stirls]

What you are in effect making is a GT2876R, they are a crap miss-matched turbo as the small turbine can't produce enough drive to drive the compressor wheel to full efficiency. The biggest i would go with a NS111 turbine wheel is a 71mm compressor which will give you in effect a GT2871R.

If you remember Ryan was running a GT2871R on his R33 and he was making 250 kw with stupid response. I would keep the T3 housing and buy a GT2871R CHRA and make up what Ryan was running

Garrett elude to the miss-match of the GT2876 when they state on the website;

* Best suited for unique applications such as asymmetric turbo installations

* Not recommended for general performance applications

Edited September 6, 2010 by D_Stirls

[RubyRS4]

What you are in effect making is a GT2876R, they are a crap miss-matched turbo as the small turbine can't produce enough drive to drive the compressor wheel to full efficiency. The biggest i would go with a NS111 turbine wheel is a 71mm compressor which will give you in effect a GT2871R.

If you remember Ryan was running a GT2871R on his R33 and he was making 250 kw with stupid response. I would keep the T3 housing and buy a GT2871R CHRA and make up what Ryan was running

Garrett elude to the miss-match of the GT2876 when they state on the website;

Thanks for that. Now I've got a better starting point to go shopping