1985 Evirude 115 crossflow blown gasket

[Marcmac]

I had power problems the last two times I took the boat out. So, I took it to the mech. this morning. He listened to it and went hmm a few times, he ran a compression test on it. If looking from the back of the motor the top right cylinder had only 30 pounds of pressure. He told me $1800 - $2500 to fix. Enough I ain't got the money for that.

I am fairly handy and thought I have a worthless boat as it sits, so why don't I repair it. I pulled off the head over those two cylinders and found the problem. I had a blown head gasket. There did not seem to be any damage to the cylinder walls. There was some rust in the cylinder.

My question is where do I go from here. Do I just put a new gasket on and crank it up or what damage has this done?

Thanks for any suggestions

 

[tashasdaddy]

Re: 1985 Evirude 115 crossflow blown gasket

as you said you have nothing but money to loose, clean the rust, check the head for warp age, and give it a try. rust means water was getting in. it's just the price of a head gasket. there is only one way to know.

 

[Marcmac]

Re: 1985 Evirude 115 crossflow blown gasket

I replaced the gasket today and the engine seems to be running at a much steadier pace. Is there aything else I should check to make sure I am not causing the gasket to blow.

Thanks,

 

[iwombat]

Re: 1985 Evirude 115 crossflow blown gasket

Warm it up, take a pressure reading for baseline and monitor.

Re-torque after a few hours of runtime.