Chev 216 loose piston pin - which one ?

[motto (RIP)]

The rockers don't require a lot of oil so if they are getting any at all it will be enough so long as they are all getting some.
You are probably well aware of it Mike but one of the good things about the old 6 cylinder Chevs is that you can pull out the distributor and run the oil pump with a screwdriver bit in an electric drill for trouble shooting or priming purposes.

David

[Mike K]

Well the oil is dribbling out of the rockers, so the oil flow is working.

[Bob Carriere]

Mike if you suspect that maybe part of the overhead assembly is noisy/dry.... while the engine is running dribble extra oil on the rockers..... one piston at a time .... and listen for noise going away......

Have you tried, while runing the engine, removing one spark plug wire at a time to see if there is a noise difference...... if one piston pin or bottom bearing is loose the noise may lessen if the cylinder is not firing.

Good luck

[Mike K]

Originally Posted by Bob Carriere

Mike if you suspect that maybe part of the overhead assembly is noisy/dry.... while the engine is running dribble extra oil on the rockers..... one piston at a time .... and listen for noise going away......

Have you tried, while runing the engine, removing one spark plug wire at a time to see if there is a noise difference...... if one piston pin or bottom bearing is loose the noise may lessen if the cylinder is not firing.

Good luck

Hi Bob

When I had this motor apart I had the valve seats done by a guy in town, he said to me , "the valve guides are rather worn, I can install new guides for $60" . I didn't get the guides done well the noisy valves are now evident , the valve stems wander around in the guides . Yes I was going to pour some oil on the whole rocker assembly while the engine was running and listen .

BTW its the original motor , still standard bore with the original pistons. The motor actually runs smoothly just a little noisy . I am tempted to remove the head and do the valve guides .

[Phil Waterman]

Hi Mike

The 216 chev is a relatively noise engine even with all new parts, but they keep running. You really do not hear the difference hydraulic valve lifters made until you listen too the engines side by side with solid lifters.

If your engine is not smoking and runs good then would not worry too much about the valve guides.

Cheers Phil