View Full Version : Rotax 503 port duration

Jason - n/a
14-Aug-06, 03:04 AM
just looking for information on the Rotax 503 transfer and exhaust port duration.

im having a lot of trouble tracking it down so if someone has already worked it out it will save me pulling the head off and all the hassles that go with it.


nickyd - n/a
14-Aug-06, 12:52 PM

I may be wrong but don't all engines differ slightly. If you are wanting the data to do any tuning, e.g. pipes, then surely you will be better off in the long run measuring your specific motor?