Max horsepower

[spareparts]

Originally Posted by fixit

4800-5200 is the normal wot operating range for an mpi motor. its actually 5170rpm when its stripped down and empty of fuel/light, and 4900 when loaded up with gear and fuel. --- just perfect imo

fyi the bottom of my swim platform sits about flush with the water

nope, its 4800-5000, just put a brand new 350 MPI in a boat today, its got the rpm written on the cover. Ferm is correct, that motor starts pulling power at 4900, I like to prop them out so they run 4800 at a light load, WOT

[fixit]

straight from mercurys website
4800-5200 rpm

https://www.mercurymarine.com/en/ca/...specifications

[spareparts]

you running the oem cat equipted motor or the repower 300 MPI like this https://www.mercurymarine.com/en/us/...a-sterndrives/

[fixit]

Originally Posted by spareparts

you running the oem cat equipted motor or the repower 300 MPI like this https://www.mercurymarine.com/en/us/...a-sterndrives/

neither.
my motor is a mercruiser new motor, not a reman plus alpha series.
its a seacore mpi infront of a bravo drive

[spareparts]

does it have cats?

[fixit]

no cats

[spareparts]

cat motors like the one you linked, turn to 5200, cats hurt the power so they turned them harder to make the lost power up. Non cat motors turn to 5000 before they start pulling power.