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Old 4th January 2017, 11:19 AM   #1 (permalink)
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vcam or stroker

I have a built engined R32gtr making about 500 at the wheels on -5s with hks 264 cams
Its has started to sound a bit ratty so its probably an engine out job
Question is do I go all out and go for a stroker kit or do I just go for a refresh
(its still fine on leak down and runs great with no oil burning) and put a v cam in

My goal is not really more horsepower just more response
I have had cars with variable cam timing and it seems to give the impression of a much bigger engine

cant afford to fit both before somebody suggests this!
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Old 4th January 2017, 01:03 PM   #2 (permalink)
simon tompkins is 614 bhp gtt 482ft lb torque
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there's no replacement for displacement,if you can go stroker or rb30,your response will be fantastic if you keep it at that bhp.


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Old 4th January 2017, 01:04 PM   #3 (permalink)
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V cam and ported head would be best imo, if you go 2.8 you ideally still want better cams.

Is it a standard engine and where is the rattle?
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Old 4th January 2017, 01:05 PM   #4 (permalink)
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Quote:
Originally Posted by simon tompkins View Post
there's no replacement for displacement,if you can go stroker or rb30,your response will be fantastic if you keep it at that bhp.


simon

But I think it will still want a better head for a bigger engine to take full advantage
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Old 4th January 2017, 01:23 PM   #5 (permalink)
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Having run both (R34 with OSG RB30 with HKS GTRS's) and now an R32 with -7's and RB Motorsport V-Cam I would opt for the latter.

A stroker kit will ultimately give you the BHP but you are still running compromised cam timing (and lumpy idle).

Static cam timing will only ever give you low/mid range OR a screaming top end but not both (although the extra swept volume masks the lack of low end grunt in the standard capacity RB).

I now have an RB26 (rebuilt to std spec - not forged) that ticks over like a pussy cat, builds boost very early (and strongly) then pull like a train to the red line.

One option gets over one of the RB26's weaknesses (poor low end torque) using displacement whereas the other brings the RB26 in to the 21st century - you pays your money and makes your choice!
Ares likes this.
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Old 4th January 2017, 04:17 PM   #6 (permalink)
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vcam

dan-engine is forged=engine just sounds tappety/knocky but otherwise seems healthy-will take it to tuning shop to get their opinion
Nick-I agree with you really and it is very helpful to have someone who has tried both
My works van is a Mitsubishi czt colt which has v cam and is only a mapped 1.5 turbo but can keep up with 3.0d bmws which seems to emphasise the benefits of variable cam timing
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