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Jim/GA · 04-06-2013, 08:49 PM

While I agree with James that proper way to test compression is with the throttle open, I would say that your numbers of 60-60-60-60 are very good for a stock A with a stock head.

I suspect that if you did the test again with the engine hot and with the throttle open, you would probable get slightly higher readings. But I would not bother. These are good.

And you said it yourself: the car runs fine. Just go drive it!

04-06-2013, 08:49 PM	#11
Jim/GA Senior Member Join Date: May 2010 Location: Young Harris, GA Posts: 1,822	Re: Compression PSI While I agree with James that proper way to test compression is with the throttle open, I would say that your numbers of 60-60-60-60 are very good for a stock A with a stock head. I suspect that if you did the test again with the engine hot and with the throttle open, you would probable get slightly higher readings. But I would not bother. These are good. And you said it yourself: the car runs fine. Just go drive it! __________________ Jim Cannon Former MAFCA Technical Director "Have a Model A day!"