12 Sec 1/4's and Aftermarket CAMS

[aqik33]

I am sorting out a 12 sec R33 gtst setup. I am running a GCG stage 1 highflow @16-18psi, power fc etc,etc. My question is how many people have tried aftermarket cams, such as HKS or Tomei and the like. What sort of perfromance gains did they net?? and are they believed to be necessary running the above boost?? What setups are people usung to put down consistant 12 sec 1/4 miles.

[CroatianR33]

I'm guessing sydneykid is gonna jump in cause he has had previous experience with the GCG highflow and I believe he has a r34 with the same highflow running 11.7 on street legal tyres.

PS I dont think the cams are necessary but we'll wait for someone with better knowledge to jump in.

[BOOSTD]

tomei Poncams 256 9.2mm

or

tomei Poncam 256 inlet and 260 ex

[Bass Junky]

I'm dying to see what SK has to say here, as I want my R34 to go 11.7 on street tyres....

With cams.

A question.

Would there be a lot of gain from using Tomei Poncams on standard turbo.... OR should I up the turbo first?

[DoughBoy]

11.7 on slicks or "road" tyres? Don't need as much power on slicks....

[2rismo]

If you're running those mods you should NOT need to change cams at all to achieve your goal. It will obviously help though.

What setups are people usung to put down consistant 12 sec 1/4 miles.

Good tyres. Seriously.

Adrian

[BU5TER]

cops arse it ran 11.7 if its the one I'm thinking of the best it did was 11.97

[Bass Junky]

I wouldn't mind 11.97 on street tyres with rear wheel drive.

[BU5TER]

Yeah its good though not good enough for the HPI list anymore, the RWD class is getting faster and faster http://www.hpi.com.au/drag_records.php

[2rismo]

I wouldn't mind 11.97 on street tyres with rear wheel drive.

It is quick but nothing amazing these days even by their (HPI's) own standards. And the car never ran 11.7, BU5TER is correct.

Adrian

[BU5TER]

Adrian thats if they're talking about that R34, can't think of which other one it could be though

[Roy]

There are 2 black R34s, i dont think the 11.7 car is the HPI / Ben Ellis car (?)...he didnt run slicks did he?

[BU5TER]

shit hey well I'm a goose hahaha

[Guest Robo's]

It ran 11.9 on slicks

[rev210]

My old gtst had a HKS 264/ 9mm lift exhaust cam added at the time of a stock spec rebuild. Running the factory turbo and intercooler.

The gains occured right through the power band to the tune of about 20hp. The midrange is very healthy.

You have a larger turbo and stand to gain an even better average power improvement. Like some have said it might not be required to get a 12 but, to get there easy a set of cams is the go.

If it loses traction just throw more power at it, eventually you will get there

[R31Nismoid]

you should need cams at all.

i ran 12.9 with 225 tyres... and about 200rwkw.

stock head etc, mild tune ECU

with a GCG hi-flow you'd be over my old power for sure.

Tyres are your answer here as others have said

[RBVS]

rev210: So you used the standard inlet cam , with the hks exhaust? did you have to get cam gears and adjust timming? interesting tell me more. After the cost of cam gears if used wouldnt there be more point in getting a set of tomie pon cams that work with the factory gears.

Does anyone know the lift of the 256 tomie pon set?

[RBVS]

rev 210; Who did the tune? sorry for all the questions

[2rismo]

Tyres and about 260kW could see 11's not 12's, mate so aim high!

Good luck and let us know how you go. Honestly, I reckon run the car as it is and then fit the cam(s) and gears.

Adrian

[DoughBoy]

Yeah, what Adrian said. It's easier to measure the gain (if any) of a mod if they are done one at a time, if the cams don't do anything for you (I personally don't think you need them for mid/low 12's) rip 'em out and sell them.