measuring piston to valve clearance
Discussion
Conceptually would the process below work?
1) fit cylinder head with 1 exhaust and 1 inlet valve on weak springs, and set valve clearances per spec
2) install cams and caps
3) bring block to TDC for #1 piston (dial gauge)
4) install cylinder head on a used head gasket & torque up
5) advance (inlet) and retard (exhaust) cam until their respective valves are physically touching the cut outs in the pistons (do this one cam at a time obviously)
6) using a dial gauge in the same plane as the cam follower, retard the inlet cam to give 1mm clearance and advance the exhaust cam to give c. 2mm clearance. Mark the cam caps for this "no go" zone prior to setting correct LCs (or as close as possible to the danger zone found above)?
Thoughts?
I've heard various mentions for use of using zip ties to check clearance at TDC, plasticine, etc.
1) fit cylinder head with 1 exhaust and 1 inlet valve on weak springs, and set valve clearances per spec
2) install cams and caps
3) bring block to TDC for #1 piston (dial gauge)
4) install cylinder head on a used head gasket & torque up
5) advance (inlet) and retard (exhaust) cam until their respective valves are physically touching the cut outs in the pistons (do this one cam at a time obviously)
6) using a dial gauge in the same plane as the cam follower, retard the inlet cam to give 1mm clearance and advance the exhaust cam to give c. 2mm clearance. Mark the cam caps for this "no go" zone prior to setting correct LCs (or as close as possible to the danger zone found above)?
Thoughts?
I've heard various mentions for use of using zip ties to check clearance at TDC, plasticine, etc.
Edited by fergus on Monday 13th March 14:14
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