First the bad news.... need headers on both motors...

now the REALLY bad news... need a new port engine...

And you're going to buy more CMI products??? There's two kinds of headers, ones that cracked and ones that are going to crack. There's plenty of people that have run SM stuff 15+ years without a single issue. Not too many guys running CMI can say that...

Where in the heck did you find your used engine package. Too bad that your 502 mpi mags sold so fast, you could have just installed the full roller parts, intake and carb and been ready to roll with basically HP 500’s. Hopefully you will find something soon. If I did not go with the CMI exhaust I would go with the KE type like gil wet offshore exhaust. Hope your luck changes for the better soon…..

What??? This is the one with the stuck valve? What is so bad that he has decided the engine is a total loss?

Yes. We thought we would just repair and replace the heads and put new headers on. That was until we got the heads off the port motor and found this.. [ATTACH=CONFIG]504503[/ATTACH][ATTACH=CONFIG]504504[/ATTACH][ATTACH=CONFIG]504505[/ATTACH][ATTACH=CONFIG]504506[/ATTACH]

You said you have owned this boat a total of 6 weeks??? if it were me i would drive that boat though the living room the the guy you bought it from...from looking at the pics that rust just did not happen yesterday..that has been happening for a long while..i would confront the old owner firsr and ask for some money back unless you knew about some sort of engine problem..

If they are from cmi and not merc/cmi....good to go

At least it's rebuild able. Hate to have to buy a complete 525. They are just outrageous $$$$

FIXX,
Read some of his other post on this boat. It originally had 502 mag mpi engines that he sold and installed these (525's). So it is not the person that sold him the boat he should be talking to. I would be talking to the person that the engine package was purchased from. I think I read that these engines were supposed to be low hr rebuilds.

My Bay! ,yes i would be going after the guy that sold him the engines..