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Rb26 Built For Drift- Which Top Mount Turbo Is The Best Option?

brembogtr

By brembogtr,
in Engines & Forced Induction

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brembogtr

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im currently building a rb26 for drift

so far iv got

forged pistons

tomei pon cams and gears

700cc injectors

fuel rail

power fc

tomei gasket kit

now my next step is to choose the right turbo that is perfect to drift with (not laggy and comes on boost very soon)

i want a single top mounted turbo and want to make 350rwk

what do you guys suggest?

i have looked at the turbo thread but couldnt find anyone that has drifted with a rb26

i do have a gtrs off a rb25 but its a low mounted turbo, is there any way i can make it top mount?

please help me!!

thanks in advance!

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R31Nismoid Grand Master

R31Nismoid

Posted
Posted

GT35, same as everyone else mate, have a search.

More info here on GT35's than any other forum IMO.

However "not laggy" and 350rwkw do not really go into the same basket.

PM-R33 Grand Master

PM-R33

Posted
Posted (edited)
GT35, same as everyone else mate, have a search.

More info here on GT35's than any other forum IMO.

However "not laggy" and 350rwkw do not really go into the same basket.

Agreed. The GT35 will make the power you are after, however it is definetely not something i would call "super responsive that comes on boost soon". Problem is for 350rwkw your looking at a 700HP turbo which is something that flows around 1000cfm at over 1.3bar. On a 2.5/2.6L this means 4000rpm+ to start seeing a nice midrange. Look at compressor maps and peoples dyno graphs, dont look at peak power, but area under the curve and at what rpm different setups make diferent power, than judge for yourself how "responsive" you would call that.

One thing i have learnt over the years from these forums is people judge response very differently. One's persons responsive turbo is another persons lag monster.

Oh yeah forget about doing the single RB25 GTRS, would be more worthwhile keeping the factory twins.

Edited by PM-R33
Imtorqing Community Regular

Imtorqing

Posted
Posted

I would look at getting a good head job :) with larger exhaust valves atleast and that will make it come on a little quicker.

My old car with a 25/30 with a 35/40 .82 made around the 445 rwhp with over 20psi in it. That was without head work though....

I would have thought that most would have gone a 30/40 which was recommended to me by Mike VINE for good low to midrange response. Will be pushing it to make that power though without a good Tuner.

I know Matty Spry from PITTS with a PFC with twin Z32's pulled that power from 25/30 with a 30/40 from a mates friends car which is and has been still going strong. Was at powercruise a couple of years ago and the dyno guy couldn't believe the power he was getting out of the 30/40. Wasn't much over 20psi either.

Imtorqing

STATUS Grand Master

STATUS

Posted
Posted

depends on budget, ive found the blitz K5 better than the gt35r but its also double the price, other notable results ive had thru the shop on a rb26 are TD06sh-25g.

Rb26 and drift is an expensive setup, oil control must be spot on.

STATUS Grand Master

STATUS

Posted
Posted (edited)
Should just stick with twins and go a pair of -9 turbos. If U must go single which isn't necessary for that power level, I'd go with a GT3076R .82.

nah the twins on a stock stroke 26 cant match a well setup single for low and mid torque. Ive got countless graphs proving this all on the same dyno... my dyno. There can be excepions but they come a setup cost that is stratospheric.

our old hack used to make 540odd nm @4000rpm most twins are about 50nm off this.

Edited by URAS
SimonR32 Grand Master

SimonR32

Posted
Posted
A GT3076 isn't going to make 350rwkw in a .82

Al has maxed his out @ 306rwkw or there abouts.

That is a solid 50rwkw shy really...

NYTSKY made 362rwkw with a 3076R and Denzo just made 374rwkw the other day...

your ignorance is always bliss

R31Nismoid Grand Master

R31Nismoid

Posted
Posted

I couldn't care less what a dyno says until there is some real proof to back that up.

Of which, as usual, there is ... zero.

But then you do love your arguments without real evidence :)

R31Nismoid Grand Master

R31Nismoid

Posted
Posted

Oh i see it is E85 - well that comes as little surprise, everyone seems to make a solid 40-50rwkw when changing from PULP (which everybody has access too), to E85 (which a lot of people do not)

It is not PULP 360rwkw...

There is no way the OP is going to make 360rwkw on E85 with 700c injectors, so he is clearly talking about PULP.

So its still back to exactly what i said, seems im not as ignorant as you are silly to put E85 results into a PULP thread... but that is fairly typical of you. :P

DRD-00F Grand Master

DRD-00F

Posted
Posted

There's still only one servo to get it from in NSW... kind of limiting.

Unless you go E85, you are straining the GT3076R to get to 350. For safeties and simplicities sake I would go a 3540 as well.

If you don't really mind being down 30 or 40 kws, I would choose the 3076R cause it's more responsive.

PM-R33 Grand Master

PM-R33

Posted
Posted

If some one says they want a certain amount of power, i think we need to assume it is on 98 octane. It is a bit pointless telling some one they can make the power on "x" turbo, they go an buy it, try to make the power and can't. Then when they come back you say "oh sorry, i ment it would make that power on C16, E85, Nitrous..." etc.

I also wouldn't classify E85 as pump gas in Oz.

T04GTR Grand Master

T04GTR

Posted
Posted

3076 with the wick wound rite up. gt35 to laggy for not much more power + on and off throttle they are laggy. t04z laggy.

just get a nice big wastgate so it wont spike. and id keep the revs under 7500. unless youve got a external oil pump.

oh. you will need some upgraded valve springs if you are going to have any hope in making your desired power.

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