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Hks Step 1's Of Poncams Rb30/rb26

leeroy_25

By leeroy_25,
in Engines & Forced Induction

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leeroy_25 Community Regular

leeroy_25

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I have been thinking which cams to run in my RB30/RB26 setup.. after reading lots of post I was thinking that the Tomei poncams.. 264 duration with 9.15 lift was the best option? The other otpion would be HKS Step ones which are 264 with only 8.7lift.. What would be the difference in drivability and power output with each of these setups?

I am running a stock bottom end and will limit the rpm to around 6750. maybe 7000rpm max. Will have the rods peened so trying to determine the max boost I can run at the mo relatively safely!? I reckon about 1.4bar? I am hoping to get around 550bhp plus at the flywheel with the corect supporting mods and turbo.

I have just had the offer of a pair of HKS cams.. they are both step1 but one is a 264 and one is a 272?

How will this set up work. does it matter which cam has the longer duration?

What should I do!!

Thanks

Lee

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https://www.sau.com.au/forums/topic/250808-hks-step-1s-of-poncams-rb30rb26/
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leeroy_25 Community Regular

leeroy_25

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Hey there,

I will be running a big single! Main thing is I wil be limited on boost and rpm by the fact I have a stock bottom end.. so reckon max 20psi and 7000rpm.. although I'll probably run more like 17psi and 6750 rpm to be safe!

Cheers

Lee

leeroy_25 Community Regular

leeroy_25

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Adriano,

Are yours the step 2 hks? So you have uprated springs as well.. Would you suggest sticking with stock cams or holding out for some tomei's?

I can get the cams with pullies or £250. New I think they are about £260 each plus shipping! I thought that was pretty good!

leeroy_25 Community Regular

leeroy_25

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I am planning to run either a Master Power or a Holset.. More chance it will be a Holset at the mo.. So it's a little bit experimental! So you reckon i'll make the power on lower boost? Surely that woul dbe better for the engine?

Cheers

Lee

  • 2 weeks later...
rob82 Mentor

rob82

Posted
Posted

Has anybody cam doctored any of name brand Cams. I think for the RB30/26 you could probably get away with aggressive ramps as the rev limit is 1000rpm lower than most rb26. I would like to know who has the greatest area under the curve for the same advertised duration.

  • 2 months later...
Marko R1 Grand Master

Marko R1

Posted
Posted
Adriano,

Are yours the step 2 hks? So you have uprated springs as well.. Would you suggest sticking with stock cams or holding out for some tomei's?

I can get the cams with pullies or £250. New I think they are about £260 each plus shipping! I thought that was pretty good!

where are u getting these prices if u dont mind me asking? im also looking at possibly upgrading my cams

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