johnson water pump impeller

[tim foster]

Hi i have a 1990 johnson 60 hp, just wondering if you can run a 50 hp three blade impeller in this 60 hp or is the drive shaft diam. different, thanks

 

[Rwbutler]

Are the part numbers the same

 

[tim foster]

Are the part numbers the same

no not the same part number, im thinking the diam. of the drive shaft is different but didnt know, also was thinking the three blade impeller would maybe flow more water,

 

[racerone]

STOP-----Find a dealer to advize you on a water pump kit.----The latest kit with a six vane impeller.----Plus instruction come with the kit for some cooling system modifications that must be done !---432955 is the kit you need to order if cooling system mods have not been done-----Nothing else will do.

 

[Rwbutler]

no not the same part number, im thinking the diam. of the drive shaft is different but didnt know, also was thinking the three blade impeller would maybe flow more water,

Your thinking way more than the engineer that designed it.