75hp-90 hp upgrade possible?

[mkutni@aol.com]

can a 75c be upgraded to a 90 hp by changing carbe? someone told me it was a doable ?

[boscoe99]

Go to the Yamaha parts catalog and look at the parts that are used on the 75 HP model. Then compare those parts with the equivalent parts used on the 90 HP model. Whatever is different will need to be changed.

More than likely it is the carburetors and the CDI. By the time you will have paid for all of the part it will have been cheaper to sell the 75 and buy the 90.

[ausnoelm]

I would suggest you get the "someone" who told you it was doable, and get them to do it for you.

[rodbolt17]

and do a dyno test for before and after modification.

[mkutni@aol.com]

thanks lots of people come um with a lot of quick fix i new that it would not be that easy tanks for the help

[rodbolt17]

there is no quick way to do it other than compare all the parts in the parts list and change everything that's different from the 75 to the 90.