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 Post subject: Exhaust Bellow
PostPosted: Wed Jul 02, 2014 12:23 pm 
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Minnow

Joined: Mon Apr 21, 2014 6:05 pm
Posts: 13
Heys guys, doing some comparing with a buddies 1988 sundowner and my same year Horizon same 4.3 motors. I noticed his exhaust bellow coming into the out drivers solid with no slits on the bottom where mine had consist holes in the bottom of my rubber bellow. Anybody know the difference?


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 Post subject: Re: Exhaust Bellow
PostPosted: Wed Jul 02, 2014 1:04 pm 
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Joined: Thu Apr 04, 2013 6:28 am
Posts: 1839
Location: South Carolina, USA
one has the drop out holes for if the drive ever has a clog and the other has no bypass slats..

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1993 190 Horizon 5.0L EFI
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 Post subject: Re: Exhaust Bellow
PostPosted: Wed Jul 02, 2014 1:20 pm 
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Joined: Sun Jul 22, 2012 5:10 pm
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Location: West Palm Beach, FL
They added the slots about 20 years ago. I figure they were added so that it doesn't hold water in there when the boat is pulled out.

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"Knot Easy" 2000 Horizon 240 Volvo 5.7GS /SX
tow: 2017 Honda PILOT EXL-AWD
prev. boats:
'87 Chaparral 198CXL 4.3 OMC Cobra
'69 Jetstar 16ft Ski Boat, 115hp Yamaha
'68 Aluminum Jon Boat, 3hp Sears
'64 Water Wings


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 Post subject: Re: Exhaust Bellow
PostPosted: Wed Jul 02, 2014 1:30 pm 
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Joined: Thu Jun 29, 2006 10:26 pm
Posts: 5661
Location: Long Island NY
The original style did not have the slits, but all the ones made after a certain date do. I heard it was to reduce back pressure but who knows, the water draining may be the reason as well.

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 Post subject: Re: Exhaust Bellow
PostPosted: Wed Jul 02, 2014 6:12 pm 
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Minnow

Joined: Mon Apr 21, 2014 6:05 pm
Posts: 13
Thanks fellas, always a great help. Boats were the same year scared me for a bit.


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 Post subject: Re: Exhaust Bellow
PostPosted: Thu Jul 03, 2014 8:07 am 
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Joined: Sun Jul 22, 2012 5:10 pm
Posts: 2032
Location: West Palm Beach, FL
Your buddy could cut a couple holes in the bottom of his exhaust bellows if he wanted to.

But let me add:
The upper bellows (Drive Shaft Bellows) MUST remain water tight. Any signs of cracking in the upper bellows means that it should be replaced.

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"Knot Easy" 2000 Horizon 240 Volvo 5.7GS /SX
tow: 2017 Honda PILOT EXL-AWD
prev. boats:
'87 Chaparral 198CXL 4.3 OMC Cobra
'69 Jetstar 16ft Ski Boat, 115hp Yamaha
'68 Aluminum Jon Boat, 3hp Sears
'64 Water Wings


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