Mercury 50 hp Crankcase to Engine Block Seal Just Beginning to Fail

[Irondogie]

No Title

Perhaps an important discovery

I attached a couple of pictures of the exhaust extension plate assembly . It was about to get cleaned.

So, reminding you that you shouldn't kill the messenger, take a look at the pictures.

Is this the likely real performance problem?

v/r

 

[racerone]

Did an 84 model 50 hp a few years ago.----Exhaust was plugged about 70% and yes that is a performance problem.

 

[Irondogie]

Thank you very much for hanging in there with me.

I will eat that carbon if it turns out not to be the problem.

This thread can probably close.

I will post a follow up just to be tidy.

Many thanks to all

v/r

Mark

 

[Irondogie]

The motor runs beautifully. New sea-speed record for my Shellake Dart is 32 mph with a great hole shot.

So lessons I learned:

Occluded exhaust was not on my list of possible problems
Taking the crankcase and block apart need not be a great trauma
I really like and appreciate the Mercury Engineering that went into these incredible little motors

Thanks again for the ideas

v/r

Mark