I have a k141 with magneto start, it uses the magnet that rides on the crankshaft rather than the magnets in the flywheel. I measured the bearing plate and everything appears to be a direct bolt up to the k181.
The shroud fits, the bearing recess is the same measurements, the crank shaft measures the same....etc.
Where my question lies is... Can I use the smaller flywheel from the k141 on the k181?
The taper is the same and I know it will fit....but it is about 1/4" smaller OD, slightly thinner, fewer fins...and it has the timing marks in the correct place for this bearing plate and magneto placement. ( I can't seem to think of a way to accurately transfer the marks to the larger fly wheel, and have always had better luck in the past setting the points off the timing mark rather than just setting the gap)
What kind of effect will the less weight have on the engine? ( I don't have a scale, but would estimate the difference in weight by a couple pounds)
Extra vibration? Possible surging?
This is going in my daughters t70 panzer, mostly just for driving around, showing, maybe pulling a sweeper, or plowing a little snow. Not a serious work horse, just good running and reliable.
Edited by Clippnalawn, May 14, 2013 - 05:50 PM.