122_Canuck wrote:
Those values are quite low. Any idea as to the mileage? Do you have access to a leak-down tester to provide a more detailed evaluation of the internals? Set the valves to 16 thou when cold...a bit tight seems to work better. Don't forget to check for rocker wear. The tips of the rocker arms wear a groove and you can't set the valves properly. Just unbolt the rocker shaft and check them for wear. Some grind down the end of a feeler gauge so that it is just the width of the valve stem (5/16") - it's a temporary fix. Many machine shops no longer offer to reprofile your rockers as they have tossed out the equipment. It's easy to do on an inverted belt sander with a 220 grit belt. If you have a stationary belt sander use that. I've even used the side of a fine wheel on a bench grinder...this is scary.
How's the power?
I've done both my sets on a piece of black sandpaper on the edge of the bench, side to side. Stopped with the last imprint of the wear pattern just visible in good light. Great finish, minimal metal removal. I think that makes up for any supposed lack of geometry.
Which reminds me, I chose to remove the pushrods for inspection and cleaning (more or less useless because they are not oil through)... Well... be aware it's quick risky if you let you mind wander. You have to use judgement and a bit of a badly leveraged motion, to keep them from pulling up the lifters from a sort of stiction. I've heard people complain the lifters stick in... Well, not in my experience. I think it was a close call... Can't remember, but I *think* that there was a risk just in removing the rocker shaft