I have an HP500EFI which has 200 hours on the clock, and the sea water impeller has been changed one time. I recently purchased a kit from BAM that included the housing, impeller, o-rings, wear plate, and new bolts, just wanting to be prepared in case the inside of my housing was badly worn. Upon inspection of the new housing, I discovered some very sharp mold lines on the inner surface where the intake and pressure ports are cast. My question is: has anyone else noticed this, and should they be smoothed out somewhat before installation? Seems these sharp parting lines would instantly start cutting the new impeller blades. Thanks for the advice.

Larry

62 Bel-Air 409

260 Eagle XP HP500EFI

2002 Corvette M-6 Coupe

i take some 320 sand paper and smooth them down

I had 65 hours my vanes stuck and rip all of them off, mercury said they had some troubles with the plastic pump.

Thanks For the info guys
Bill