Change 7.5 Merc to 9,8

[7.5Merc]

Does anyone know how to change a 7.5 to 9.8?

 

[7.5Merc]

Re: Change 7.5 Merc to 9,8

7.5Merc;Does anyone know how to change a 7.5 to 9.8?

 

[7920hpMercury]

Re: Change 7.5 Merc to 9,8

Best route is to find a 9.8 powerhead on ebay and swap the powerhead and carb, rest is the same.

Problem is the intake and exhaust ports on the 9.8 are larger and at a different center point than the 7.5. So, just drilling them out does not get the holes in the right place.

 

[7.5Merc]

Re: Change 7.5 Merc to 9,8

Best route is to find a 9.8 powerhead on ebay and swap the powerhead and carb, rest is the same.

Problem is the intake and exhaust ports on the 9.8 are larger and at a different center point than the 7.5. So, just drilling them out does not get the holes in the right place.

Thank you. That is a good place to start.