Post by
Master Chief »
https://forums.nicoclub.com/master-chief-u30830.html
Sat Sep 22, 2007 12:55 pm
The only cams that tomei have that aare called PONcams, are the 256's Deg.
All other Tomei Cams, are called PROcams.
All PROcams, require stiffer valve springs, because of the high lift they run - 12mm and upward.
The 260, are 12mm Lift, and are called PROcams. The need Valve springs.
I recomand not to mix and matcj springs and cams. The Tomei TYPE A springs, needed here, are not much more expensive than the GREDDY once, but are 100% compatible with the Tomei cams.
The Greddy Valve springs, besides having a bad reputation of braking, are not likely designed to work with such HIGH lift's, as the tomei have.
I siujest not to try to save here, and buy springs from whoever you get the cams.
I have the Tomei 260's with Tomei TYPE A springs, and BC Retainer (Becsue tomei dont make tem).They idle like Stock, and the car pulls like a train, at above 400RPM - all the way to the red line.
To tell the truth, i think the retainers are a waste of money - never really heard of a problem with a OEM retainer, and the simple fact that TOMEI dont make or recomand changing the OEM ones, speak for itsef.
Just make sure you get the right Intake Cam - if you have or dont have VVT.
Good luck !