"Lou" wrote in message
ups.com...

"Lou" wrote in message Thanks, I see quite a bit of airboat motors
for
sale at 1/4 of the
price of aircraft. I plan on rebuilding anyway, so I figure why not?


I agree Doug, I plan on doing a total tear down anyway. Better safe
than sorry.
Now, whats the difference between the airboat motor and a GPU?

Lou


Two things.

One. You can actually find air boat motors to buy.

Two. A lot of air boat motors came out of airplanes so they were designed
with a propeller flange and the right kind of front bearing, aircraft style
motor mounts, etc. etc. etc. (Unlike the typical GPU).

If the crank was ground at an auto machine shop they may or may not have
preserved the fillets at each end of the bearing surface. If they ground a
square corner, you will want to replace the crank (assuming the original had
the fillet....). Better shops know not to do this, but you don't know until
you look - eh?

--
Capt. Geoffrey Thorpe
The Sea Hawk At WowWay D0t Com