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Old 03-18-2008, 09:50 AM
red65mustang red65mustang is offline
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those numbers are fine and the good news is you very likely can burn "elcheapo" brand 87octane with maxed timing...

nah, leave it together..... rule of thumb is if all cylinders do test within 10%....keep on driving....135 X 1.10% =148= close enough

when you "can" test drive and downshift with the vac guage...the vac guage is likely to read 24Hg+ and steady...when it does read <23Hg after alot more miles tear it down (and likely you will be adding a qt of oil every 1,000 miles at that point)

on any motor "some" cylinders live a much harder life (do more work with a less than best A/F mix) so the do wear faster

if this is a fresh build.....ignore the comp test results and vac readings till you get 500+ road miles on the motor (and re-torque and re-tune the whole motor)
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