Tomei Poncams

[GtrVspec]

Just a quick question before i purchase the Tomei Poncams Duration: IN 260 / EX 260 Lift: IN 9.15mm / EX 9.15mm for my rb26. By the search seems theyre the best to get now that change with the types of mods i currently have?

hks 2530

wiseco pistons

porting

cam gears

full stainless exhaust + dumps cept the manifolds stil stock(manifolds to go in with the cams n air flow metres)

injectors

fuel rail

power fc

front mount

air flow metres are still stock(have bigger ones to go in with the cams)

boost controller

Thanks.

[Sydneykid]

Tomei Poncams have been consistently the best solution for RB25’s for us. So much so that I wouldn’t really consider using any other cam in an RB25. But that is NOT the case with RB26’s, we have used Jun (in my own engine), HKS and Tomei Procams. Given similar duration and lift, there doesn’t seem to be much difference from one brand to another. So I wouldn’t limit my choice to just Tomei Poncams, in fact the best performance I have seen out of an RB26 with 2530’s was with HKS 264’s. DirtGarage had similar results, 440 or so rwkw from memory.

What I do, every time, is to look around for the best price, regardless of brand.

cheers

[GtrVspec]

thanks gary now that i know what to look for i will ..... what would be the benifit from say a set with 9mm or so to a set with 10mm ?

[Sydneykid]

thanks gary now that i know what to look for i will ..... what would be the benifit from say a set with 9mm or so to a set with 10mm ?

More lift is better, but the trade off is machining of the head to clear the lobes, which is much over rated, valve springs to handle the extra lift, followers, even offset ones for smaller base circle cams, piston clearance etc. So it's not a question of "better", more one of budget.

cheers

[STATUS]

yeah the poncams seem to work well in the RB25's, not so well in SR20's when compared to the HKS / GREDDY (new grinds) equivalents. Greddy have just invested in a new Cam machine and have revised their offerings and the sell them in packs now. i have not used any of the new RB stuff so i WILL NOT go on about them, i will be getting a set of 26 ones in to do some back to back tests in cats car though.