MC-1 Exhaust Bellows Slipping Off.

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JimEd B

Seaman
Joined
Mar 29, 2021
Messages
63
Hey Y'all,

Got bellows buttoned up, but the exhaust bellows pulled off immediately.

Blasted through all the engine stuff today, where I'm more familiar.

Rewired the trim switch. Trimmed the drive up, ran the engine, and sure enough the exhaust bellows popped right off on the gimbal housing side. Glad that happened in the driveway.

Figured I'd check to see if there are any common ways to screw that up before I get back in there and try again? Would like to check bellows off my to do list again ASAP.
 
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poconojoe

Lieutenant Commander
Joined
Sep 10, 2010
Messages
1,966
Waiting for the experts to help you out.

I don't know anything about an MC-1 or if this pertains to one, but...

My exhaust bellows on my alpha 1 gen 2 popped off too. It was such a pain, I just left it. It's basically acting as an exhaust tube. It doesn't seem to be any louder to me.

A disconnected exhaust bellows on an alpha 1 gen 2 will not allow water into your boat. I don't know about an MC-1.
 
Lancer76

Lancer76

Petty Officer 2nd Class
Joined
Jul 23, 2017
Messages
121
I have an MC-1 and same thing happens - bellows does not stay attached long to the lower unit end no matter how I try to make it stay. As mentioned above, there is no problem with leaving it off under typical conditions. In fact, there are exhaust boots that are designed to not be attached on the lower unit, and only engage when the lower unit is down (much like what your's probably does right now).
 
J

JimEd B

Seaman
Joined
Mar 29, 2021
Messages
63
Man,

I was looking at it yesterday and figured that was the case.

Drives me nuts to leave something half assed on a boat destined for big salt water, but all it does route exhaust and cooling water down and out through the prop right?

As far as water intrusion goes, nothing changes?

I'd still prefer to fix it, but want to drop boat in a local lake and test it / burn up all the old fuel before I replace fuel pump / filter / rebuild the carb. If I can do that safely, I just might have to.
 
Bondo

Bondo

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Staff member
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Apr 17, 2002
Messages
71,088
JimEd B said:
Man,

I was looking at it yesterday and figured that was the case.

Drives me nuts to leave something half assed on a boat destined for big salt water, but all it does route exhaust and cooling water down and out through the prop right?

As far as water intrusion goes, nothing changes?

I'd still prefer to fix it, but want to drop boat in a local lake and test it / burn up all the old fuel before I replace fuel pump / filter / rebuild the carb. If I can do that safely, I just might have to.
Click to expand...
Ayuh,..... That is correct,.....

"Trimmed the drive up, ran the engine, "
That ain't such a good idea either, it crowds the u-joints,...
Run the motor only in the trim range, as low as possible,.....
 
J

JimEd B

Seaman
Joined
Mar 29, 2021
Messages
63
Bondo said:
Ayuh,..... That is correct,.....

"Trimmed the drive up, ran the engine, "
That ain't such a good idea either, it crowds the u-joints,...
Run the motor only in the trim range, as low as possible,.....
Click to expand...
Thanks for the response here.

Apologies, I wasn't super clear there.

With the comma I meant to separate those activities. I trimmed it all the way up to trailer position. Lowered it, and ran it.

Just wasn't sure which chicken/egg pooped the exhaust off because I didn't think to check until it was already running and shooting water from the gimbal housing.
 
J

JimEd B

Seaman
Joined
Mar 29, 2021
Messages
63
That looks like a winner there. Let's a guy feel like the thing is put together completely.

There isn't any reason this shouldn't be used on a 4 banger is there? It's got a 3.0 in it for now.
 
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