I gave the 73 ES a compression test tonight and to me the results seem a little low for a car with 102,000 miles. Mind you that this is a B20F with low compression and lots of emission control junk on it. I've got an 180 PSI B20E in my Amazon now, so maybe my expectations are too high.
The test results are thus:
1 - 120 PSI
2 - 120 PSI
3 - 120 PSI
4 - 120 PSI
Normally I'd be cheered by such even numbers, but my Amazon's 1967 500,000 mile - once rebuilt - B18 gave me compression readings between 135 and 145 PSI.
So... is this normal?
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