Poncam Type R For Rb26 - Is This New?

[ned]

Hi all,

as the topic states. I found on the Tomei site a refernce to a Type R poncam with specs of 250 (in and out) at 9.15 lift. The graph shown suggested that Torque increase at low revs (under 3000) was nearly [2-3 times] (correction due to poor res of the brochure i was looking at) 20% as great as standard which is something I would appreciate with stock turbos.

http://www.tomei-p.co.jp/rb26/rb26.html

Has anyone seen these or are they new / or superceded ?

Cheers

Ned

Edited May 22, 2006 by ned

[T04GTR]

hmm. looks like there a new 250 degree cam. (from the pic on the site)

posibly to retain a nice idle

[rb26s13]

maybe a cam designed to go with gtss's? :

who knows... never heard of a 250 before.. only a 256

Edited May 21, 2006 by rb26s13

[Abo Bob]

Certainly sounds like a small turbo cam.

[Mik]

Certainly sounds like a small turbo cam.

They are supposedly designed for OEM BNR34 Turbos

[2443]

TOMEI type R Pon cam is for standard turbo or N1 turbo. But GT2530, T517Z even T78 is stil OK. TOMEI desinged it because Japan is getting hard for the emission in law. Pon cam type A and B make high back pressure for exhaust system with a catalizer whatever fitting sport catalizer to GTR. It means that make bad responce for the engine. Therefore, TOMEI reduce the angle and make new design suitable.

[ned]

Thanks for the replies,

I guess the question now, is what effect this cam would have compared to the type A or B with a standard Turbo.

Has anyone seen dyno charts?

Its also not clear whether this really is new? (the Tomei site says its from the 2003 catalog), or its actually old (it doesnt appear on any of the usual parts supplier sites eg Nengun, Greenline etc).

Thanks

Ned

[2443]

Result for Back Pressure test. Type A and B cams are 2.0kg at 6,500 rpm. Type R is 1.9kg at 7,200 rpm.

Result for Power check. Type A is 405.00ps at 7,500 rpm. Type B is 406.33ps at 7,500 rpm and Type R is 404.65ps at 7,500 rpm.