Blown Mercruiser 5.0 Alpha. Low hours. Replacement options

[FishStretcher]

My MPI has no return and pump is on the engine. Water separator is on engine, too.

[FLexpat]

The biggest differences I am aware of to watch out for in a motor swap are the new style rear mount bushing and the new style wiring harness on late model MCM motors:

• Mercruiser eliminated the spiral spring in the rear mount bushings in 2003 and changed the height slightly - that means the height of the fwd mts may change a little. Mercruiser service Bulletin 2003-11.
• I can't remember when they went from the 9 pin round harness connector to the 14 pin connector but there adapters for that.

[keith]

Originally Posted by FLexpat

The biggest differences I am aware of to watch out for in a motor swap are the new style rear mount bushing and the new style wiring harness on late model MCM motors:

• Mercruiser eliminated the spiral spring in the rear mount bushings in 2003 and changed the height slightly - that means the height of the fwd mts may change a little. Mercruiser service Bulletin 2003-11.
• I can't remember when they went from the 9 pin round harness connector to the 14 pin connector but there adapters for that.

Thanks for the advice. I currently have the 14 to 9 pin adapter on my motor, which is a 2007. I hope the motor mounts aren't different but I can deal with that when it gets in.