IO-360 crankshaft?

zero.one.victor · Post by **zero.one.victor** » Mon Jul 05, 2004 3:34 am

A friend is buying an early O-300 powered 172, & was a bit concerned about engine parts availability,especially with regards to replacement crankshafts in case one was needed at overhaul time. The A&P owner of a local engine shop,which I believe is a CRS,told him that was no problem, that it was possible to just use the crank out of an IO-360.
Does anyone know if this is a factory-endorsed substitution?

Eric

blueldr · Post by **blueldr** » Tue Jul 06, 2004 5:31 pm

I think that " engine " guy is really wrong. If new IO-360 cranks fit in O-300 type engines, used serviceable O-300 cranks wuold be a lot cheaper.

jatkins · Post by **jatkins** » Sun Jul 11, 2004 1:17 am

I recently explored this crankshft question.
I was told , not having read it my self,
that the I0-360 crank will fit in the 0-300D ,
I recall mention of a service bulletin.
The only issue is the gear on the back mounts with different
size bolts , so a differant gear and bolts must be used .

John

blueldr · Post by **blueldr** » Sun Jul 11, 2004 2:52 am

I still stand by my above statement.