Just got a new motor put in Don marvel did the rebuild. Under load it spits out little sreads it looks like paper but i could never find any thing. i would drive then retrack it could nver find anything is it normal for stuff to come out the exhaust at first. I got a street port and 3mm seals also it revs at 1500 rpms but if i turn on my A/C it will drop to about 900 for a mintue or so any suggestions sometimes the trottle gets stuck at about 2000 when i push in the clutch if i rev it will drop not sure what to do.

 

Have you contacted Don Marvel about it? Did you install the motor or did an rx-7 shop? If you haven't contacted Don about it yet, why would you post about it here first?

 

To compare what he says to what yall say