Originally Posted by DragsterJosh
Im done trying to beat the dead horse. You my friend do not have a clue about getting a compression ratio and you should find a new mechanic if he is telling you that there is a guage that gives you compression and not just cranking pressure.
Get any manual and look it up, or ask any full time mechanic, not a weekend backyard mechanic.
I guess real world wrench turning experience and ASE certifications take a back seat to the brilliance you can attain by reading a Haynes manual :roll:
Thanks for saying this DragsterJosh, I think a little miss reading or real general source material "grossly misunderstood by the reader" must have caused this nonsense. I would have thought that when every one was :lol:, at this nonsense, the author may have re-thought his answer prior to insulting other race junkers that are politely giving him a reality check . Cranking compression has no relation to static compression ratio, DUH... Cam timing will have the greatest role in manipulating the cranking numbers up and down. Advanced cam timing settings will give higher readings and retarded settings will give lower PSI numbers, no matter what the calculated COMPRESSION RATIO is, changing only the cam timing without any physical volume or ie, compression ratio changes.
PS, We don't have to be a full time mechanic's to understand printed material in a repair manual, but it appears someone obviously does.
Bruce
Retired master ASE tech