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Rb 25 Turbo Choices

Adz2332

By Adz2332,
in Engines & Forced Induction

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Lithium
Lithium

Gets tricky, depends on weight of cars and how hard they are being pushed etc. There are R33s and Soarers running mid 11s with GT3076Rs, SimonR32 here has run a very low 11 with his lighter R32, and

ARTZ
ARTZ

as for something with more potential I agree, get a good clutch and big injectors, good manifold etc... get good supporting mods.... and spend time on setup your rear end to handle it all etc... as

joeyjoejoejuniorshabadoo
joeyjoejoejuniorshabadoo

i haven't read the thread so I am not gong to comment on that, yet I will state my personal results. unopened RB25 with HKS 2835 pro s running 323rwkw on trent's dyno with powerplus e85 (106 RON) fu

Adz2332 Grand Master

Adz2332

Posted
  • Author
Posted

Just reading through your build up now 34geeteetee.

Somthing along the lines of the bolt ons im trying to find!

Impressive mate.

You may get a few stupid questions pm'd through to you. just giving u the heads up!

34GeeTeeTee Grand Master

34GeeTeeTee

Posted
Posted

Just reading through your build up now 34geeteetee.

Somthing along the lines of the bolt ons im trying to find!

Impressive mate.

You may get a few stupid questions pm'd through to you. just giving u the heads up!

Haha i get plenty of questions and do what i can to answer them, none are normally stupid as we all start somewhere! I still learn on here most days :)

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ARTZ Grand Master

ARTZ

Posted
Posted

I dont know... with the .82 rear and larger front the power delivery is still not going to be as brutal as the 2835...

however in saying this I have not driven a 3076 .82 with external gate on an RB25... but i still cant see it having the agression of the HKS unit, which for me is where the fun is at.

(i have driven an ex gate 3076 .82 on an RB25/30 however... shit was like driving on ice)

you would like mine...I dunno if you been in BIrds car, its pretty quick and very smooth, but mines alot more aggresive :devil:

its a bit more nice without the screamer now..

definately more fun if you ask me though it is hard to tell which will be faster without racing em though

Lithium Grand Master

Lithium

Posted
Posted

I dont know... with the .82 rear and larger front the power delivery is still not going to be as brutal as the 2835...

however in saying this I have not driven a 3076 .82 with external gate on an RB25... but i still cant see it having the agression of the HKS unit, which for me is where the fun is at.

(i have driven an ex gate 3076 .82 on an RB25/30 however... shit was like driving on ice)

Like for like the cast GT compressor wheels are typically apparently nearly 30% heavier than the HTA ones - I'd go out on a limb and say that the GT3076R-HTA wheel is probably lighter than the GT3071R (and GT2835) wheel. Obviously you then have the .82 (as you mentioned) to factor in, but then you also have the greater wheel efficiency of the more modern design... quite a few swings and roundabouts there - but I am more thinking about the net result of the conversion than the initial spool. I personally loved the .82a/r GT3076R, and the HTA is only likely to be an improvement :)

Adz2332 Grand Master

Adz2332

Posted
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Haha i get plenty of questions and do what i can to answer them, none are normally stupid as we all start somewhere! I still learn on here most days :)

Haha thanks mate much appreciated!

you would like mine...I dunno if you been in BIrds car, its pretty quick and very smooth, but mines alot more aggresive :devil:

definately more fun if you ask me though it is hard to tell which will be faster without racing em though

Mate do you have a build thread?

joeyjoejoejuniorshabadoo Grand Master

joeyjoejoejuniorshabadoo

Posted
Posted

Dyno shows 4000ish on high boost runs..... Feels more lively on the street that what the graph shows though :)

that's what I meant... 2835 was up and running by about 3250...

I dont doubt the 3076 makes the power... but i reckon it's never going to be as responsive as the smaller 2835 no matter what the configuration

34GeeTeeTee Grand Master

34GeeTeeTee

Posted
Posted

that's what I meant... 2835 was up and running by about 3250...

I dont doubt the 3076 makes the power... but i reckon it's never going to be as responsive as the smaller 2835 no matter what the configuration

No argument there... :)

Some info on the one result Lithium mentioned was in here -

http://www.skylinesaustralia.com/forums/topic/417832-precision-pt6766-vs-forcedperformance-gt3794r-hta-dyno-shootout/page-3

And there was another thread too "370kw" in the title i think it was! Interesting!

I also noticed there was a VQ result to be expected but i never saw anything posted about it since...

joeyjoejoejuniorshabadoo Grand Master

joeyjoejoejuniorshabadoo

Posted
Posted

Do you have a dyno plot of full boost by 3250? How much boost was that?

not on me... I can show you one of my old engine with 98 and e85 that is pretty close, but that was a 200,000+ motor and eventually spun a biggie.

34GeeTeeTee Grand Master

34GeeTeeTee

Posted
Posted

lol thanks! ill look it up!

Looking at the plazmaman plenum, the different size throttle bodies. How big is to big? or is needed etc?

I run the smallest one they have! I think 66mm or something from memory!

34GeeTeeTee Grand Master

34GeeTeeTee

Posted
Posted

not on me... I can show you one of my old engine with 98 and e85 that is pretty close, but that was a 200,000+ motor and eventually spun a biggie.

That is not a bad innings! Mine is making the power on a 150k unopened motor :ph34r:

GTScotT Grand Master

GTScotT

Posted
Posted

And there was another thread too "370kw" in the title i think it was! Interesting!

I also noticed there was a VQ result to be expected but i never saw anything posted about it since...

VQ is still sitting on workshop floor, but we have since turned back to utilising the existing SR instead :) Wanting something more brutal than linear.

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