On muffs water raining from Transom Shield

[SAROPS]

Newbie here. I've have been lurking for awhile. I appreciate all I've learned on this site. I should have stopped in and said howdy sooner

The boat is a 1997 Wellcraft Excel with volvo 3.0/SX drive. When the boat is on muffs water pours out of my transom shield with little coming out of tell-tale, as seen in picture. I bought the boat last year and this problem got worse over the season. I back-flushed from intake with no leaks, filled the bilge, no water leaking. On my last run the boat started overheating at high RPM. I know it's on the output side of the cooling system.

The only thing I can think of is the Exhaust seal behind the transom shield? Any inputs what I'm up against? I'm hoping it's not a rotted transom.

I've been working on engines for a long time. I know enough about drives to be dangerous. I'd like to attempt to fix myself, change the bellows, check Gimbal bearing, and U joints while I have the drive off. I'll probably find a boat mech and pay for some education with either with cash, or pizza and beer (he watches while I turn wrenches).

Thanks in advance for your advice,
Tony

 

[Gary H NC]

Re: On muffs water raining from Transom Shield

Welcome to Iboats Tony!

Can you post a pic of what you are seeing?
It is very normal for most of the water to exit like you are saying when on the muffs.There are exhaust relief holes.
The exhaust bellow may be torn but really the boat will run without it.
The biggest concern is if the exhaust bellow is shot then the drive shaft and shift cable bellows are not far behind in most cases.

 

[SAROPS]

Re: On muffs water raining from Transom Shield

Gary,

A little difficulty posting the pic, I just thumbnailed it in the original post. I'm hoping the bellows is it.

Thanks,
Tony

 

[Blujay96]

Re: On muffs water raining from Transom Shield

It does sound like the bellows from what you are saying and from the picture.

 

[bruceb58]

Re: On muffs water raining from Transom Shield

Totally normal for the water to exit their.

As far as your overheating is concerned, when was the last time you changed your raw water impellor?

 

[cr2k]

Re: On muffs water raining from Transom Shield

First thing I would check is the impeller with a diminished water flow and overheating as you mentioned.

 

[SAROPS]

Re: On muffs water raining from Transom Shield

Guess I didn't know it was normal for water to leak out of there. The schematics gave me the perception it was sealed all the way down to the Water and Exhaust out in the prop.

I'll change the raw water pump. Is the crank driven pump something to change out for insurance also?

Thanks for the replies,

Tony