87 black max adapter plate gaskets

**"Aquahaulinass"** · 04-15-2021, 12:55 PM

I'm going to pull the power head and adapter plate to clean the sand and gravel out that my back flush couldn't get out and I'd like to have the gaskets before I start. I was told it's a 87 175 that has been turned into a 225. It looks to me it had a 1 piece adapter plate. I also think there may have been exhaust work done on it. It's way louder than the bass boats on the lake and has a growl to it. Even the neighbors have come over to tell me how loud it is. If so could it take a special gasket? Could the head gaskets be special size with the 175 to 225 conversion? Ive included pic of all angles of the motor.
Thanks fo the help mike

**25two.stroke** · 04-15-2021, 01:00 PM

The 1 piece plates all use the same gasket. You can get it or take a 2 pc plate gasket and trim it to match. 2 pc plate gasket original to that motor is thin and the merc 1 pc plate gasket is thick. Honestly Id just get the gasket that goes with your engine serial number and then trim the exhaust outlets if you find that they have been opened up to the hipo motor size...this is the cheaper option and you can't go wrong.

**tlwjkw** · 04-16-2021, 11:34 AM

he storied ta ya justa little on what it is NOW... its probably loud cause they pulled tha can out and maybe drilled tha down housing...get this one and you'll be fine.

8231422

**"Aquahaulinass"** · 04-16-2021, 11:52 AM

Thanks bro I really appreciate the link that was really cool of you. Could you point me in the direction of the gasket that goes between the plate and the power head?