Compression test In psi
02-06-03, 02:41 AM
#5
I don't know off hand. It will vary from model to model of course.
I have heard anything of 110-125 psi being EXCELLENT numbers. Not sure what brand new should read, or what the lowest numbers you want to see before rebuild are.
Try the serach functin of the forum for this info, you should find it pretty easily. I could do it for you, but then again, why would it
I have heard anything of 110-125 psi being EXCELLENT numbers. Not sure what brand new should read, or what the lowest numbers you want to see before rebuild are.
Try the serach functin of the forum for this info, you should find it pretty easily. I could do it for you, but then again, why would it
02-06-03, 03:45 AM
#7
Rotary Freak
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Depends on the type of motor you have. 3rd gen is 9:1 compression ratio which means that you should get approximately 9 x 14.7psi = 132.3psi
for TII, they're 8.5:1 for S4 and 9:1 for S5
Min spec for a rotary is approximately 6.0:1 which means that if your motor is seeing around 88psi, you're marginal and needs a rebuild.
for TII, they're 8.5:1 for S4 and 9:1 for S5
Min spec for a rotary is approximately 6.0:1 which means that if your motor is seeing around 88psi, you're marginal and needs a rebuild.
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