AHmmm.... my car doesn't roll in gear like that. And it's pretty hard to spin by hand. Good compression I guess.

Also, I don't think the bucking you're talking about is a trait of the rotary specifically. I think it's more the Nikki carburator.

My Nikki used to 'buck' somewhat under decelleration. But my Dellorto never does; it is *smooooooth* while decelerating, even at very low rpm's.

 

Mine does this pulsing, or bucking, when cruising @ low RPMs like through a parking lot with speedbumps, etc. It's as though the engine is power on/power off/power on/power off... but subtly, mainly in the enigine note with very slight bucking.

As both of my ReXes did this I thought it normal. Is this similar to what you folks are describing?

 

Wonder if my post will be here tomorow since every post in the last week has been deleted when i check up on it next day.....Car still *****! **** buck **** buck

 

My '82 bucked or "rubber-banded" with the nikki and the emissions on. With all the emissions removed, it is
very smooth, even with the nikki. Manntis, I've had two
SE's one bucked like yours, I could never get it out, one
was smooth as glass. The only difference I know of is the "bucker" had been abused more than the other.