I've got the following: A 290 degree duration cam and compression readings
of 110 +/- 5 on all four. Engine has just had new rings.
Has anyone else had experience measuring compression with long duration cams?
I know the reading will be lower than with a stock cam (about 255 or so on the
1300 Spit engine) but is 110 too low.
As soon as I get the clutck unstuck I will get a leak down test. At the
moment I am wondering if I should just tear down the moter and get it rebored
etc. Before I do this I want to know if NEED to or if that reading is about
right for that cam.
Thanks DW
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