Originally Posted by MauriceG
I have been running an OS.12TZ 5 port. This weekend I'll be testing an RB. X12 Rody. Are these normally a 3 or 5 port? Or did they make both? I was thinking about gearing the RB the same as the OS. Does that sound like a good idea?
Hmmm, so nobody has had any experience with these two engines?