I have a '97 zetec head(silvertop), prepped, and the journal behind the
cam gear on the exhaust cam is oversized. Also, not any obvious
choices for performance cams for this motor. I am wondering if the
apparent "pre-R" head has a different cam requirement, and a
possible reprofile of stock cams is required, as opposed to some
off the shelf option. Since the head has been ported, and fresh valve job
I would like to use it. I do have an unprepped R head. I am not sure
if the lower end is silvertop(97) or R, but it is fresh. If anyone can clarify
what changed on the 97 to 98 motors, that would be great!:bigear:
Best Regards,
Guil
Caterham Project