well, yeah.

all true. that is why the book says 147 to 160 psi is normal.

but i am very glad to hear all those good facts. it is good to know that barometric pressure can make so much difference.

again, the books stress the main thing is that there is evenness across the varous cylinders.

tom w

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[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual.[SIGPIC]

..I also have a 427 Cobra replica with an aluminum chassis.