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RB20DET in an R32 running low 11's

sLo-32

By sLo-32,
in Engines & Forced Induction

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sLo-32 Enthusiast

sLo-32

Posted
Posted

Is this possible? Ive heard the RB20DET's arent know for their huge power outputs. If this is possible and someone has achieved it could you please let us know what setup you've used or if you know of a setup possible to get these sorta times. Would it be a better option to put in a RB25DET and go from there?

Cheers

Chris

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Roy Grand Master

Roy

Posted
Posted
... or if you know of a setup possible to get these sorta times. Would it be a better option to put in a RB25DET and go from there?

I dont think getting the power out of an RB20 in an R32 GTST to run an 11 is that difficult, i think its the car setup required to do it can get expensive.

A few ppl have commented my car should run an 11, some even say easy, but i doubt it will....not because of power, but the rest of my car wont allow me to run that time. (actually the driver may be a limiting factor as well :Oops: )

I have an RB20DET with Trust TD06-20G with 10cm housing, Trust exhaust manifold and Type R wastegate, GTR 444cc injectors, re-written Jap ECU, AVC-R, HKS Type S cooler, HKS air filter, R33 Series II AFM, 19 row oil cooler, HKS Hyper 3" exhaust with cat and both mufflers, Whiteline works susp package and UAS GTR 6-puck clutch and flywheel(sprung centre), and 225/45/17 D01J rear rubber. (with std open wheeling diff)

I have no idea about the power my car makes, about 2 weeks ago it was on a dyno and made 180rwkws at 0.65 bar (may have been 0.8 i cant remember) AFM was playing up so going Z32, and the mixtures were bad, so getting a re-tune next week after the engine gets some std GTR cams and adjustable cam gears this weekend.

Power, i dont know, this turbo has made 260rwkws on an RB25, i have seen an R32 GTST in NZ makign mid 240rwkws (without cams)...so hoping for at least 230rwkws, without having to wind too much boost into it.

So friends say 11, tuners says 11s (once the Maps are cleaned up), but the cars clutch cant be slipped off the line, so means getting off the line will be either dump and spin, low revs and bog, or ride and burn :rofl: . Also 225 rear tyres aint the best for traction, i can fit 245s on the rim and arches, but i couldnt afford 245s when i recently bought rubber.

Then i have an open wheeling diff, not good for traction off the line, and there is the suspension im using, (2rismo gives me heart as he ran an 11 with Whiteline susp) and along with the firmness of my shocks/springs, my alignment aint ideal for drags, its actually set up for sprint laps around circuits (though i never seem to drive at the track :Oops: )

Next Friday at Calder, ill give it a run and see what time i do, i expect between a 13.1 and a 12.7, as i have never drag raced my car before. I know of a few cars that made over 300rwkws just crack into the 11s with the right rubber and repeated attempts.

The quickest RB20DET powered R32 i know of is 12.7 (a time i will be stoked with)

Lithium Grand Master

Lithium

Posted
Posted
Then i have an open wheeling diff, not good for traction off the line, and there is the suspension im using, (2rismo gives me heart as he ran an 11 with Whiteline susp) and along with the firmness of my shocks/springs, my alignment aint ideal for drags, its actually set  up for sprint laps around circuits (though i never seem to drive at the track :Oops: )  

Next Friday at Calder, ill give it a run and see what time i do, i expect between a 13.1 and a 12.7, as i have never drag raced my car before. I know of a few cars that made over 300rwkws just crack into the 11s with the right rubber and repeated attempts.

The quickest RB20DET powered R32 i know of is 12.7 (a time i will be stoked with)

Very difficult, but possible - I have watched an R32 GTSt w/ RB20DET run an 12.2 in NZ, but that was using NOS and slicks. Esp. if you want to do it with a road car/street tires, I'd guess an RB25 would make it heaps easier - just because of the response/turbo driving ability.

  • 4 months later...
Chris32 Veteran

Chris32

Posted
Posted
whut abt that white one with Microtech in HPI, ran 11?

I think the one your are talking about is MattR's old car (forum member) It had a RB25 in it, I think it ran about 11.7 or 6 on slicks

The car was stolen and burnt not long after, so it went no faster

Clint32's R32 ran 12.8 on stock internals and injectors, very good time for stock motor

Roy Grand Master

Roy

Posted
Posted
I think the one your are talking about is MattR's old car (forum member) It had a RB25 in it, I think it ran about 11.7 or 6 on slicks

The car was stolen and burnt not long after, so it went no faster

Clint32's R32 ran 12.8 on stock internals and injectors, very good time for stock motor

LOL...so 12.8s the benchmark then. Will have to see how i go this friday, i reckon im about a 20:1 of not even getting under 13.5:(

GTR-Ben Proficient

GTR-Ben

Posted
Posted

There is a R32 GTS-T RB20DET with Slicks and a Stock Bottom end running high 11's down here.

Just a cheap cam grind, Link Computer, T3/T4 turbo, Custom intake and exhaust manifolds.. it's not consistent but has done a couple of high 11's. Best of 11.8

I don't think it runs any Nos also.

Also on a stoc GTS-T box.. they don't last long.

I was suprised..

Chris32 Veteran

Chris32

Posted
Posted
LOL...so 12.8s the benchmark then. Will have to see how i go this friday, i reckon im about a 20:1 of not even getting under 13.5:(

Yeah, Clints time is pretty stout for a RB20 I reckon. At the time it was making around 230/240rwkw I think, RB25 box and GTR mech. LSD

I have been to the drags once, and I sucked! At the time it was with my previous tune (ie no fuel and no timing in mid-range) and the best I could manage was a 14.0 at 104.9mph, my 60ft was 2.4ish. Axle tramp and diff where the main prob

My suspesion was also not well suited for drags, overall I thought my car would run mid 13's, but it wasn't to be

Do a few runs just driving of the line, and get a feel for what mph your car is capable of, you will need around 110mph to run a 12, maybe a bit more

Have a go mate, be kind to your gearbox too

Sydneykid Grand Master

Sydneykid

Posted
Posted

My experience has been that the problem with the RB20 isn't max power, you can easily get enough to run 120 mph. But the power band gets so narrow that they get really hard to get off the line and that makes 11's a bit of an ask. As Roy posted, bog and die or wheelspin city.:P

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