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12 Sec 1/4's and Aftermarket CAMS

aqik33

By aqik33,
in Engines & Forced Induction

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aqik33 Contributor

aqik33

Posted
Posted

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.

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https://www.sau.com.au/forums/topic/45409-12-sec-14s-and-aftermarket-cams/
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CroatianR33 Collaborator

CroatianR33

Posted
Posted

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.

Bass Junky Grand Master

Bass Junky

Posted
Posted

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?

2rismo Grand Master

2rismo

Posted
Posted

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

rev210 Grand Master

rev210

Posted
Posted

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 :D

R31Nismoid Grand Master

R31Nismoid

Posted
Posted

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 Community Regular

RBVS

Posted
Posted

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?

DoughBoy Veteran

DoughBoy

Posted
Posted

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.

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