Help finding a Powerhead for 90hp 2 stroke

[frankie the wop]

Advice: Powerhead for a Yamaha 90hp 2 stroke

Need advice on finding a used powerhead or a rebuilt one for my sons little 90hp 2 stroke. Everything else is in perfect order except for the low compression on the bottom cylinder.

[ausnoelm]

Before going too crazy looking for a new motor, has the bottom cylinder been "looked at"

[robert graham]

Any chance that bottom cylinder could be bored and a new piston installed?....might be an option for you if everything else on the motor is good...just an idea....

[TownsendsFJR1300]

I'd pull the head and see what the cylinder looks like (scored, maybe a blown head gasket, etc). Costs ya 45 minutes maybe, $0.00 investment...

Maybe peek in the exhaust port at the rings.

BTW, love you username!

[boscoe99]

There are plenty of shops to which the block can be sent for a repair. Many would prefer to have their stuff rebuilt as opposed to buying someone else's used crap with no history of it.

Here is but one. He might very well have a rebuilt block available for exchange of your old one.

Chris Carson Marine

A South Florida marine service and supply shop specializing in reed valves and the rebuilding and re-manufacturing of outboard motor powerheads and lower units - Chris Carson Marine Service and Supply.

Or you can always buy a new long power plant from Yamaha

6H1-W0090-45-1S YAMAHA CRANK CYLINDER ASSY