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?

 

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.

 

Should be six numbers? min psi is 100 at 250rpm plugs removed from both rotors. Can't use a regular compression meter either, must be a graphing type (Mazda). Biggest difference between rotor chambers is 21psi.