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Mariner 350 Exhaust leak
- SanJuanDreamer
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Re: Mariner 350 Exhaust leak
- bud37
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Re: Mariner 350 Exhaust leak
To add, I had much the same thing with an 83 Mariner...took the complete exhaust apart and put new screws and caulking, new hoses done in 1990, a little heat helped get it apart...was transom exhaust though but the same idea.
- mjk1040
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Re: Mariner 350 Exhaust leak
I'd Rather Be Boating!
1989 Sea Ray Seville
1986 Carver Mariner 32'
1990's Thompson 22' Cuddy Cabin
1990's 4Winns 245 Vista Cruiser
1980's Thompson 19' Open Bow
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Re: Mariner 350 Exhaust leak
It'll be so much easier if everything is out of there so you can lie down and get to the side of the hull. Break the inside seal all around the exhaust hose at the joints with a mechanic's hose pick. It'll take a bit of muscle but it will come off. Putting it back together won't be a walk in the park either.
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Re: Mariner 350 Exhaust leak
mjk1040 wrote:Source of the post....Some say you should just bring the flange up to the bead of 5200 and let set for 24 hrs or longer and tighten down the next day or so. Giving the 5200 time to form a gasket if you will, other wise you will squeeze most of it out and not leave much to seal the area....
That is the proper way to re-bed something however, only if the item is being thru-bolted. If just using screws this method shouldn't be used otherwise you'll break the seal around the screw when you go to tighten it the rest of the way. When doing the final tightening on the thru-bolt, you must not let the bolt turn or again, you'll break the seal. Tighten the nut without allowing the bolt to turn.
When using either a screw or bolt, you should always ream out the top of the hole so there is a bevel there under the item being fastened. This serves to hold a good bead of sealant at the top of the hole around the fastener that will not get squeezed out because it will be lower than the top surface. In fiberglass, this bevel will also prevent cracks radiating from the hole. A practice that should be used every time you drill a hole in fiberglass for a fastener.
- SanJuanDreamer
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Re: Mariner 350 Exhaust leak
They're at Marine East and cost $104ea....thank goodness as I'm tired of paying out the ars for simple things...
http://www.marineeast.com/a_sch/sch_det ... &pid=08_01
- bud37
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Re: Mariner 350 Exhaust leak
- mjk1040
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Re: Mariner 350 Exhaust leak
I'd Rather Be Boating!
1989 Sea Ray Seville
1986 Carver Mariner 32'
1990's Thompson 22' Cuddy Cabin
1990's 4Winns 245 Vista Cruiser
1980's Thompson 19' Open Bow
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- CYO Supporter
- Posts: 5803
- Joined: July 10th, 2015, 9:58 pm
- Vessel Info: 1989 Carver 3807 Aft Cabin
- Location: Ontario, Canada
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Re: Mariner 350 Exhaust leak
mjk1040 wrote:Source of the post.... I only mentioned the bolt the method since that appeared to be what we were working with. Mike
Yep, I just thought I'd warn about when using screws for the benefit of anybody who might have a project using screws so they don't try to do it the same way as bolts. Glad you brought it up Mike, not many people know that's the way it should be done. It's so automatic with me that I didn't think to mention it.
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Re: Mariner 350 Exhaust leak
https://www.westmarine.com/buy/incom--butyl-caulking-tape--P015730286
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