Yami based powerplant in Seadoo XPL?

[clayne100]

Anyone ever consider dropping one of the crazy big bore superjet based power plant in a seadoo XPL? The XPLs come with a 951 engine, which is a good start but the layout sucks. Carbs are side draft and really low on the engine so water ingestion is a problem.

 

[kevbo]

A punched out Yamaha twin is too frail and octane sensitive for sitdown use. Use a triple for cheap reliable power.

 

[Yami-Rider]

A stock 951 makes 135 HP. Wouldn't need to run anything too crazy to get those numbers out of a twin yamaha. A big bore/ported 701 or a ported 760 should have you around that number.

 

[700Pirate]

Seen seadooo motors in Yamahas but never the other way.

XS1400 in a base yamaha vx700s. Should be under 450lbs total weight. Braap.

 

[Half flip95]

A stock 951 makes 135 HP. Wouldn't need to run anything too crazy to get those numbers out of a twin yamaha. A big bore/ported 701 or a ported 760 should have you around that number.

701 runs @ 73HP?
add a pipe to get it to 95
Dual 46s get you to 100
porting gets you to 110
add 6mm stroke gets you to 120
total loss gets you to 130
adding a bore size gets you to 135

thats how i do hp math in my head.
does that sound right or am i way off? thats what i guess my hp at