1994 150 200 difference

[lulu2]

I have twin L150txrs and all part numbers are the same as the 200's. Does anyone know what the difference is? Thanks

[slim]

porting and exhaust tuners

[jb123]

thats all ?? i would have "guessed" jets and ring placement

[lulu2]

Found out that boats.net parts cat. is wrong. Went to yamaha site and found different #s for carbs,reed blocks and crankcase.

[slim]

yes the jets are different too. sorry they slipped my mind. the carbs should be the same and the crankcase is different cause of the ports. rings are the same too.

[slim]

oh i bet the bore in the carbs might be a hair bigger so yes they would be different too. sorry my mind has been elsewhere.