Re: Someone hooked the battery up backwards / new member 55 Clipper Deluxe

Posted by HH56 on 2021/7/28 17:18:10
If you have stuck pistons there is every chance you may also find some stuck valves. The rockers can look fine and everything appear well lubed while a few valves are completely frozen in the guides. Stuck valves can also lock up an engine and mimic stuck pistons -- although stuck valves, depending on how many or how far an engine needs to rotate before hitting one, do usually allow some movement of the crank. Once you get the pistons to move any valves that do not move will usually do a very good job in bending its pushrod and as I and several others on the forum have found out, the pushrods do bend quite easily.

It may require removing the heads or at least the springs so you can make sure no valves are stuck before you try turning the engine. Packard did have a special tool to remove springs without removing the head and that tool does not look too hard to bend or weld together -- although a home made version might not be as pretty as the Packard item. It is shown with instructions on how to use it starting on page 28 in this service counselor.

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