H27 EXHAUST

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Feb 4, 2007
81
- - Somerset,
removehtml]I am in the process of rehabbing a 1981 H27. The original Yanmar was replaced with a Yanmar 2GM20F. The P.O. ran a new exhaust hose in a big loop up inside of the sail locker and around and down to a fiberglass pipe that is glassed thru the hull just above the waterline. After inspecting this arrangement, I noticed alot of soot build-up around this pipe and the adjoining area. On the exterior of the boat, where this pipe exits, there is a small crack that appears to be between the inner layer of the hull skin and the hull liner. I was woundering if anyone had a similar situation or this was a custom modification (not for the better) by the P.O.? Is it customary for the exhaust to exit next to the cockpit thruhull so close to the waterline on H27? It seems that this is not a recommended routing of exhaust outlets.Error: Error: expected [/URL], but found [/removehtml] instead[/removehtml]
 
Nov 28, 2004
209
Hunter 310 San Pedro
Typical Hunter exhaust

I, own a 99 Hunter 310, 2GM20F Yanmar. Original exhaust exit is out molded/glassed port at the waterline on the starboard quarter. The anti-siphon loop is in the swimstep locker just before exhast port. If you have soot on the inside of the hull at the exhaust connection my first suspect would be the connection. Properly sized, sufficiently tight, and double clamped. There should be no soot at or around the connection. The installation you described sounds like a typical Hunter Marine install. Dennis W. S/V Fullsailed
 
S

scott

Sounds stock set up to me

Your description matched that of my 84 H37C
 
Feb 4, 2007
81
- - Somerset,
inside soot

This is the setup in my boat also. The spot that I see trouble with is between the skin of the hull and the hull liner. there appears to be a crack between the two that would allow exhaust gases to migrate between the two especially when the opening is below water in a following sea. I am thinking of making a new outlet higher up and further aft or at least putting a proper thru-hull at the end of the exhaust hose. Thanks for all the feedback.
 
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