> Hi Team
>
> I have an IO 360 engine with a 3 bladed constant speed prop. I was taught
> to never operate with engine power (manifold pressure) greater than rpm eg
> 23 inches of MP and 2,300 rpm. I have read though that this is something
> of an old wives tale and that indeed there can be advantages in reducing
> rpm and running the engine with say 24 inches and 2,200 rpm. This reduces
> cylinder wear and piston speeds but does it stress the engine to a higher
> level? There is a lot about "big bore" IO 540s and how they are getting
> better life running oversquare. The IO 360 is a 4 vs a six but the
> cylinders in both have the same capacity.
>
> I am interested in the views of those more of an engineering bent or
> anyone who has a well informed view on the matter.
>
> Bernie