Increasing redline on RB25

[nv033]

4th gear run so you can see from the speed that we are talking around 8k at the speeds on the graph.

is it possible to share the list of mods done to this car....is there a link at all that someone know of......that graph makes me horny :headspin: :headspin:

[N I B]

It has:

GT30 500hp Turbo

Greddy Plenum

R32 GTR Intercooler

Wolf 3D

GTR Injectors

[japsky33]

Steve,

It made its max power at around 180km at what revs is this in 4th gear ?

BR,

JH

It has:

GT30 500hp Turbo

Greddy Plenum

R32 GTR Intercooler

Wolf 3D

GTR Injectors

[BBQ]

I'm only considering it because I've got an exhaust cam wheel, and will be running 15 psi after the tune. I used to run 15psi with the factory ECU, but the PowerFC at the same boost maxes out my injectors and AFM. So I'm running at 11psi until I get it tuned.

Anyway I'll see what the mechanic has to say when I take the car in. At least now I know I have some room to experiment.

I don't see much of an advantage of increasing the red-line to 7500rpm, if your only running 15psi max. by the time your turbo hits 6700 its all ready running out of steam, unless your planning on running a bigger turbo with 20+psi, then it would be worth your while.

[R31Nismoid]

It has:

GT30 500hp Turbo

Greddy Plenum

R32 GTR Intercooler

Wolf 3D

GTR Injectors

Hey Steve, how does a 500hp turbo make 450hp at the rears?

:confused: more than likely me missing something

[japsky33]

I agree how does it ?

[MidnightGTR]

while were on the topic of redlines (dont mean to go off too much) but on a rb26 with 2540's would it be ok to up the limiter to 9000? or is that over doing it

[N I B]

500hp is the rated power figure for running at 1bar, obviously we're running more then 1bar;)

[R31Nismoid]

Oh sweet, so mine will potentially make more than 550hp..

w0000t

[GTS-t VSPEC]

Depends on alot of factors, but with the 500hp turbo it is possible to almost get that at the wheel.

[nv033]

wherez merli the walking converter...whats the rpm equivalent for peak power and at 100km from the dyno was there a boost pressure at all or am i having a shocker

[B-Man]

Paul, SteveSST - what Cams do you use ? What exhaust ? Mine drops off slightly at about 7000 - but would love it to keep going .

[nv033]

Paul, SteveSST - what Cams do you use ? What exhaust ? Mine drops off slightly at about 7000 - but would love it to keep going .

hey brendon met u yesterday im steve...its nice to see u makin good use of the dyno day with up to date references :headspin: :headspin:

i was amazed this was commented earlier with the car ur referring to

Steve SST quoted "This is for those that think that RB25s dont make a shit load of power and high revs on stock cams and heads.Check it out."

so i take it the motor beens untouched :confused:

[N I B]

Pauls motor has a stock head and cams but RB26 rods Arias pistons and a Greddy intake manifold and an R32 GTR intercooler GT30 turbo and Plugin Wolf and GTR injectors.

Pauls car has 22psi thru the mid range bit is turned down to 18psi thru the top as the fuel pump was to small to feed the top end.It now has an 044 pump and cams on the way.

The GT30 should not get to 500rwhp but we will try and upgrade if it can't.

[nv033]

is it sydney or are we just suckers.......... gtr injectors are rated in the 400cc's i think...wouldnt they max out??? at that sort of power... cause most of the tuners in sydney reckon they do and reccomend something big? i thought the motor had stock rb25 rods...or are u refering to a different car in regards to rb25 rod limits

[B-Man]

My 550cc sards are at 90% (no FP reg). I have very similar setup to Paul. HKS3040, HKS manifold, Arias Pistons, Stronger rods, Ported head, 256/9 Tomei cams, Trust/Greddy plenum, Q45 Thtl Bdy, Kings bearings, Redline Oil, oil cooler, Bosche pump, Big Bar & Plate cooler, 90 mm exhaust, Power FC, 21 PSI e-boost (more boost doesn't make a difference). Maybe I have hit the limit for the compressor ?

[N I B]

Pauls car went thru a big bash session last year when it went 411rwhp on RB25 injectors with big pump and ajustable reg but went on and proved its power at other dyno comps and a dyno run supervised by dyno dynamics.We often run GTR injectors to 450+rwhp with plug in Wolfs.

[INASNT]

Pauls car went thru a big bash session last year when it went 411rwhp on RB25 injectors with big pump and ajustable reg but went on and proved its power at other dyno comps and a dyno run supervised by dyno dynamics.We often run GTR injectors to 450+rwhp with plug in Wolfs.

Pauls car needs to come down to Melbourne or Sydney and try pull those numbers i recon.

What elevation above sea level is ur factory??

[GTS-t VSPEC]

Haha, feel free to ring Dyno Dynamics to confirm the numbers, all the details are shown on the dyno graph, as it is using ShootOut mode:D

[INASNT]

blah calling dyno dynamics wont prove anything

Just take a drive down to mexico man, it aint that far from Perth!!!