Mike:
If you are running high ratio rockers, going back to stock will
make quite a difference in the idle quality. I must say that based on
the GP2 cam specs I find your idle issues not too surprising. I have
always felt that the GP2 cam was pushing the envelope for a mild cam.
Anyway, check your valve lash, and set it according to the cam
specs, don't use the factory lash settings. And if you are running high
ratio rockers, don't forget to increase the lash accordingly - high
ratio rockers require more lash than stock rockers.
Vance Navarrette
Cogito Ergo Zoom
I think, therefore I go fast
-----Original Message-----
From: 6pack-bounces+vance.navarrette=intel.com@autox.team.net
[mailto:6pack-bounces+vance.navarrette=intel.com@autox.team.net] On
Behalf Of michael lunsford
Sent: Saturday, June 14, 2008 5:43 AM
To: 6pack@autox.team.net
Subject: [6pack] Timing and compression
Al,
I found the Goodparts G-2 cam to be a little more radical than I
expected. It works fine but it is lumpier than expected at
idle. Most people who hear it at idle and know about these
things ask if I "have a cam" in the car so it is noticeable.
I think I have between 9.5 and 10.0 to 1 compression ratio on my car
and have to use premium. <snip>
Mike Lunsford, 1970 TR6
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