Buying a 8...compression question
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Buying a 8...compression question
Hey everyone...I was trying to get answers somewhere else, but got no luck so maybe someone is willing to help if I post here. I'm looking at 2004 RX8 and the dealership ran a compression test on it and they said it had 98 psi. I searched and found some info here http://www.racingbeat.com/mazda/performance/rotary-tech-tips/compression-check.html
my question is does this mean the engine is on its way to low compression?
my question is does this mean the engine is on its way to low compression?
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Hey everyone...I was trying to get answers somewhere else, but got no luck so maybe someone is willing to help if I post here. I'm looking at 2004 RX8 and the dealership ran a compression test on it and they said it had 98 psi. I searched and found some info here Rotary Tech Tips: How to compression check a rotary engine
my question is does this mean the engine is on its way to low compression?
my question is does this mean the engine is on its way to low compression?
Here
https://www.rx8club.com/new-member-f...2/#post4533733
This link should take you to the starting posts about compression, if it doesn't go to post #31 and start reading.
By the sounds of it you should read the entire thread as well not just that section on Compression
Last edited by wcs; 08-23-2014 at 01:14 PM.
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1 single compression number is exactly worthless to determining the health of a rotary.
You need 6 numbers, and an RPM. Miss any one of those, and the numbers are worthless. So "98 psi", even if that is taking the lowest of the 6 numbers, or an average, is still worthless, because 98 psi is failing at 260rpm or higher, passing under 260rpm ... if you are at sea level. That also makes things change.
You need 6 numbers, and an RPM. Miss any one of those, and the numbers are worthless. So "98 psi", even if that is taking the lowest of the 6 numbers, or an average, is still worthless, because 98 psi is failing at 260rpm or higher, passing under 260rpm ... if you are at sea level. That also makes things change.
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