experience needed for this question !!!

[WHITEBOYY32]

i have a tracker pro-18 with a 60hp mariner. it had a 13 pitch aluminum prop on it. i put a 12 pitch stainless on it. it has bout the same rpm and it added 1 mph. but ive heard that stainless makes drastic changes, whass that mean? ive also heard that changing can ruin a piston, whass this mean? any response will be appreciated.

 

[LubeDude]

Re: experience needed for this question !!!

Please Paul, only put your problem in one place, It makes it VERY confusing to follow all your posts. If you do not get a responce, just bump it to the top untill you do.

 

[ED21]

Re: experience needed for this question !!!

A stainless prop of the same size & pitch as an alum. prop will usually make the engine run less RPM at WOT because the blades are cupped. Some more than others.<br />Can't see why it would ruin a piston unless the rpm goes too low & the engine lugs.