Compression numbers - thoughts...
#1
Compression numbers - thoughts...
Stock F20 with new 2mm gasket. Warm motor with throttle 100% and pulled fuel pump fuse. Dry and Wet (half cap of oil in cylinder). Cranking roughly 8 times. Average of three measurements for one reading.
Dry Wet
#1 - 170 - 195
#2 - 172 - 202
#3 - 182 - 220
#4 - 190 - 217
I think it's time to face the facts...
Dry Wet
#1 - 170 - 195
#2 - 172 - 202
#3 - 182 - 220
#4 - 190 - 217
I think it's time to face the facts...
#4
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#6
sorry, back from dead. but thought i would update.
car is boosted with a 6265. had a 3m gasket on which blew of course. gave the cometic 2mil gasket a try. during install cyl wall damage was not evident. after the compression test/leakdown i brought the car in to get tuned again. has been running strong ever since. I think my rings are showing some wear. wont have the car running again until spring. sucks living in a state (WI) where you can only drive the car half the year.
car is boosted with a 6265. had a 3m gasket on which blew of course. gave the cometic 2mil gasket a try. during install cyl wall damage was not evident. after the compression test/leakdown i brought the car in to get tuned again. has been running strong ever since. I think my rings are showing some wear. wont have the car running again until spring. sucks living in a state (WI) where you can only drive the car half the year.
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#10
at the time of performing the test, i was paying attention to the gauge. that's why i said roughly 8 cranks, was kinda counting in the back of my head but could be off a crank or two. i dont remember what cyl i started on. this was done early this year some time.