Re: BigKev's 1954 Packard Clipper Deluxe Sedan

Posted by PackardV8 On 2010/4/22 6:04:26

IF u know the compression ratio such as 8:1 then multiply 8 x atmospheric pressure (about 16 psi). 8 x 16 psi = 128 psi. THis works close enuf for rock'n roll up to about 10:1 CR where a minor fudge factor has to be accounted for.

I'd say the readings u got as posted earlier are just fine.


Be sure to mark in some permanant way #1 post on distributor cap. If u memmorize the firing order then u will never have to worry about getting the plug wires mixed up. This is very inportant for road side or emergency or fast diagnosis when the wires have to be removed all at once.

I put a silver or yellow painted stripe on mine. A small cablle tie around the distributor boot of the #1 wire. Or memmorize the posistion of the #1 plug terminal of the cap relative to some engine component.