[ERA Chas]

Originally Posted by tboneheller

I have installed 1000's of seals, in-car, with one of these. This tool has made me a lot of money. Lisle 36200 Valve Keeper Remover and Installer : Amazon.com : Automotive

Were those thousands dual springs with flat wound dampers between-like the majority of Cobra engines use?
The demo is an import head with a mousey single spring. Hand pressure will not budge a 140+pound on seat spring set without leverage.