1951 288 Packard Valve Clearance Notes: What is the minimal clearance?

Posted by kunzea On 2024/6/4 11:35:02

Measurements below are at cylinder 2 prior to surfacing.

Highest edge exhaust valve above block: .3475

Head surface plus straight edge to cylinder cavity: .4945

Straight edge: .0750

Used head gasket: .0600

Clearance with straight edge: .4945 - .3475 = .147

Clearance with used head gasket: .132

Minimal clearance: ?