Merc 2.5 Powerhead on a 2.0

[outboardgeno]

I have a 1989 Merc 2.0 135 horsepower motor. I have the opportunity to pick up a Merc 2.5 150 horsepower powerhead. Will this fit and if so any special modifications needed? My boat is a 18' Sea Ray runabout. Thanks in advance.

[fyremanbil]

No problem, will fit on the mid section.

[outboardgeno]

Thanks for the response. I have been reading many of the other posts and I'm wondering if I would have to change my exhaust plate or tuner?

[ASTROCRAZY]

No, it should work ok.

[mendo]

Make sure you get the correct gasket for the powerhead, look closely at what passages both require. look at the tuner too to make sure it matches well.

[outboardgeno]

Thanks for all your help. I will probably get the powerhead and put it on. I may be posting for help soon if I get in trouble. Thanks again!!