Dave, Getting back to your first post, this is a motor that was running until an overheat and stick last August. It turned out to only need a top end job, but the case was cracked open to confirm the health of the crank.
I dug out my SkiDoo manual while I was home at lunch. For the 494, the technical data lists valve timing as opening 135 deg BTDC and closing 64 deg BTDC. Does "opening" and "closing" indicate when the valve BEGINS to open or close? I'll confirm yesterday's observations after work today and get more specific about what the valve is doing and when it's doing it. Thanks, Kenneth --- Jim's Lawn Shop <[EMAIL PROTECTED]> wrote: > Ken > This is a wild ass guess to your question that I > didn't answer in my > last post, > remember this is a ball park guess ( I could be > nuts). > The valve should be opening maybe in the range of > 120-100 degrees > before top dead center. I'd guess the valve is open > about 145-155 degrees > of travel so it should close somewhere in the 35--50 > degree range after > TDC. > Somebody with a Rotax manual could give you the real > numbers > but these should be close enough to tell if it's way > the hell off. > Key words are GUESS and BALLPARK. > Dave Phaneuf > ________________________________ > FormulaCar Magazine - A Proud Supporter of Formula > 500 > The Official Publication of Junior Formula Car > Racing > Subscribe Today! www.formulacarmag.com or > 519-624-2003 > _________________________________ > > > > _______________________________________________ > F500 mailing list - [email protected] > To unsubscribe or change options please visit: > http://f500.org/mailman/listinfo/f500 > *** Please, DO NOT send unsubscribe requests to the > mailing list! *** ________________________________ FormulaCar Magazine - A Proud Supporter of Formula 500 The Official Publication of Junior Formula Car Racing Subscribe Today! www.formulacarmag.com or 519-624-2003 _________________________________ _______________________________________________ F500 mailing list - [email protected] To unsubscribe or change options please visit: http://f500.org/mailman/listinfo/f500 *** Please, DO NOT send unsubscribe requests to the mailing list! ***
