How are my compression numbers?
04-03-02, 08:43 PM
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How are my compression numbers?
I've put about 1300 miles on a street ported, 3mm apex seal motor. It idles very poorly and is extremely difficult to warm start, both symptoms of a bad compression motor. I did a compression test today and got 100psi for the front rotor and 87psi for the rear. I don't have a strong reference as to what's good and what's bad for rotary compression. Based on these numbers, how healthy is my motor?
04-03-02, 09:19 PM
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Ouch. 85 psi is the limit. your engine is right there at the limit. I would defineatly talk to your engine's builders. I hope you broke it in properly.
04-03-02, 09:27 PM
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Re: How are my compression numbers?
Originally posted by waltk88
I've put about 1300 miles on a street ported, 3mm apex seal motor. It idles very poorly and is extremely difficult to warm start, both symptoms of a bad compression motor. I did a compression test today and got 100psi for the front rotor and 87psi for the rear. I don't have a strong reference as to what's good and what's bad for rotary compression. Based on these numbers, how healthy is my motor?
I've put about 1300 miles on a street ported, 3mm apex seal motor. It idles very poorly and is extremely difficult to warm start, both symptoms of a bad compression motor. I did a compression test today and got 100psi for the front rotor and 87psi for the rear. I don't have a strong reference as to what's good and what's bad for rotary compression. Based on these numbers, how healthy is my motor?
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