I Might Just Know What I'm Talking About
Join Date: May 2002
Location: Selma,CA in the middle of the vineyards, Central California
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RV cam and valve adjustment question
Howdy all, I been away from this forum for a while, hope everyone is well.
A little help please. (I have this posted up in several locations)
1990 Chevy 350, with an RV cam
Is there any difference in the valve adjustment for the RV Cam from the normal adjustment?
Chevy manual calls for 1 full turn from Zero lash. I don't have any info about the RV Cam. I don't believe an RV Cam would change the height of the valve opening; only the time it's open ....... right??????
Reason for asking is that I found them all at Zero lash when I started this project? Rebuilder/installer error? or is that the way it should be with the new cam? This motor w/RV cam has approx 20K miles on it.
This all started because the motor is using oil (lots of blue smoke, seems worse at idle or slow speeds?) and is getting worse.
Compression tested good & balanced.
All spark plugs show oil damage on one side, so I assume the oil is entering through the intake valves. I suspected the PCV system sucking oil in but it appears normal: I disablabled the system for approx 1K miles and still had the blue smoke. No vac leaks found around the intake. Now I'm changing the valve stem oil seals and noticed the valve adjustment.
Thanks for any help/thoughts/ideas/imput.
"The Heep" 73 Commando, 258 I-6, T-18, Scout Dana 300 w/Tera 4:1 Kit, SOA, PS, Thru-dash Cage, Alcans, OBA, ARB's, HEI, Ft disc, MC 2100,Dents, Mud & Rust.