What Cams Would You Choose?

[SIR-JD]

Hey guys and gals,

I have made the decision to change my cams... At the moment I have hks step 2 272's with 10.2 lift. I'm changing because I want more response down low on the track instead of having to keep the revs up between 5g and 9g.

So question is what cam size would you use? The head has had extensive work done, motor is fully built running -5's, running 98 octane and it's a 2.6. So I am after something that is going to match and make the most out of the engine and turbos for track use.

I'm open to any suggestions. Cheers

[fatz]

I would go stock then you don't need to pull them out

[GTSBoy]

I would go for something that retains the lift you already have and drops the duration to 260° or a smidge less. If that means custom, that means custom.

[XKLABA]

tomei do a 260 x 10.8

http://www.ebay.com.au/itm/Tomei-Procam-for-Nissan-RB26DETT-R32-R33-IN-EX-260-10-8mm-1421260108-1422260108-/170943348394?pt=AU_Car_Parts_Accessories&hash=item27cd047eaa

[SIR-JD]

Do you think 260 will be a big enough difference?

What would your opinion be on putting stock cams back in? To small?

[XKLABA]

IMO if you had -9s or -7s id say go stock cams or type R poncams but the -5s would benifit from the higher airflow, you want high lift-low duration cams and i think these are the pick ATM

[Sinista32]

Just to help on data n specs http://www.tomei-p.co.jp/_2003web-catalogue/e070_cam_RB26.html

[Piggaz]

Do you think 260 will be a big enough difference?

What would your opinion be on putting stock cams back in? To small?

260 will be PLENTY!

[SIR-JD]

Thanks guys! Just don't want to run the risk of doing the change and getting it wrong. It's all about getting as much response as possible while still running -5's.

[Ziller]

I had 260 x 260 tomei cams, had the standard cams put back in, 355 rwkw with the 5s at around 7000 rpm and the car feels great to drive.

[XKLABA]

I had 260 x 260 tomei cams, had the standard cams put back in, 355 rwkw with the 5s at around 7000 rpm and the car feels great to drive.

which 260s did you have ? would be awsome if you have before and after dyno charts to see the difference between the two cams ?

[Ziller]

which 260s did you have ? would be awsome if you have before and after dyno charts to see the difference between the two cams ?

B type poncams, this was a fresh build at a new workshop, I would love to know myself.

What I did have was -10s with Poncams, Motec M800 at 25psi on Shell 100 octane for a disapointing 350awkw, soon after the engine shit it self.

New setup -5s with stock cams, in went my old power FC with Nismo AFM with just over 20psi on Shell 98 for 355rwkw and so much better to drive, the engine dosn't have to run as hard to make power.

[XKLABA]

type B poncams are a pet hate of mine, IMO to much durations for the lift they have

couple that with -10s on a 2.6 and it is never going to perform well no matter how good the computer is

motec back to a PFC ? strange move

[SIR-JD]

Does your car run out of puff at 7g because of the Standard cams? Or are the -5's big enoug to give you power all the way to 8g.

Edited July 7, 2013 by SIR-JD

[blind_elk]

Why not standard cams, then dial in some adjustable cam wheels to give the cams a bit more overlap.

[SIR-JD]

That is what would be happening. Just want to see what people have done with similar setup :-). Than I will make my decision on standard or mild aftermarket.

[Piggaz]

Why not the Mines 252 @ 10.05mm? The head is relieved already, get some lift up it!

[SIR-JD]

Sorry for my ignorance but what will extra lift do for engine response and performance? Keeping in mind I'm after maximum respond and meaty mid range.

[Joshbigt62r]

Why not the Mines 252 @ 10.05mm? The head is relieved already, get some lift up it!

Couldn't agree more with Piggaz comment. Mines cams FTW!

[XKLABA]

what Piggaz said

Edited July 7, 2013 by XKLABA