T04z On A Rb25

[ookami]

I'm thinking of tryign a HKS T04z on a RB25, has anyone done this before, as I can't find much information on it. What is/would the response be like with the 0.81 housing?

cheers

Edited February 5, 2006 by ookami

[ish]

that will work well .... kinda on the laggier side with the .81 with a big kic in the pants comming on.... from what i am led to believe rear A/R is determined by inlet and engine capacity to be able to spool up at different times or give more HP depending on the A/r rating...

a .9 would give more hp but spool up much slower

a .7 would spool much quicker but less peak hp

[Morgs]

I'd use a size down from the .81 on a RB25.

Would also suggest unless its a built motor, something smaller would be a better match.

Theres another thread on this somewhere (RB25 T04Z), might be worth a search.

[Nathan_G1]

smaller rear exhaust housing will allow much faster spool up, being a relatively large turbo. My suggestion is to go with a IHI/Apexi AX6 turbo, im running one on my 33 RB27DET and its awesome, spools up early full boost easily by 4 or less and cranks till 9,000rpm or more its a fun turbo to have and u wouldnt regret it, but same thing applies, a smaller rear exhaust housing and itl b crazy..mines larger but i got heaps of engine work

[ookami]

My engine currently has a HKS 2835 pro s with a tomei 270 procams and a full bottom end, so I figure I've got the hardware, may as well get a turbo to match it. The hks t04z apparently also comes ian 0.61 housing, does anyone have an idea on start spool rpm and full boost rpm? What hp is a Rx6 rated for?

[R31Nismoid]

I wouldnt use one.

You havent got the RPM band the RB26 has.

GT30... 550hp is the path.

Super resonsive and great top end on the RB25 (hence why a lot of people use them)

[N I B]

A built 25 revs hard enough if done right and if it was still VVT it can have a better mid range than the 26.

[Sydneykid]

Hydraulic lifters

cheers

[Swiper the Fox]

We have a fully built RB25/TO4-Z (HKS) combo due for completion very soon. Engine is done just waiting on cams and injectors to arrive from the land of the rising sun. We have gone with a 0.81 rear housing as the owner is a bit of a power junkie and top-end punch is what he's after. Will keep you posted with our results. The old engine had a GT3040 (garrett) hanging off the side of it.

Edited February 5, 2006 by DiRTgarage

[ookami]

Hydraulic lifters

cheers

<{POST_SNAPBACK}>

I've got solid lifters

[ookami]

My engine with a tune from japan currenlty has a rev limit of approx 8,000rpm, so I'm hoping that should widen the power band a bit. I've already got solid lifters and valve springs so I can't see why this can't be extened another 500 rpm or so. DiRTgarage I'd be very keen to see how that car performs, if you could keep us psoted that would be tops.

[Swiper the Fox]

My engine with a tune from japan currenlty has a rev limit of approx 8,000rpm, so I'm hoping that should widen the power band a bit.  I've already got solid lifters and valve springs so I can't see why this can't be extened another 500 rpm or so.  DiRTgarage I'd be very keen to see how that car performs, if you could keep us psoted that would be tops.

<{POST_SNAPBACK}>

Yeah ookami, more than happy to keep ya in the loop. Will let ya know how it comes up.

[S3_Girl]

Everyone is used to reading poncams, they must have skimmed over the

procam bit

cheers

[Interloper]

Everyone is used to reading poncams, they must have skimmed over the

procam bit

cheers

<{POST_SNAPBACK}>

lol, i think you might be right - i did!

[ctjet]

u can but make sure the engine can support the power or u'll end up like HOTLIN... he had a T04and hes enine went f*kn BAAANNNNGG!!

but im sure ur smarter than that

[MattSR]

Hi DiRTGarage, Do you have any updates on this car?