The mechanic put one on my new installation on Peregrine. He said he thought that we were a little close to the water line, so better safe than sorry. By the way, Cruising World at some point will be coming out with my article on taking out the old and installing the new engine.
Andy Formerly C&C 40 Peregrine Now Baltic 47 Fair Wind On Mon, Jan 29, 2018 at 1:37 PM, Josh Muckley via CnC-List < cnc-list@cnc-list.com> wrote: > I have one from the PO. No regrets and no plans on removing it. I think > it is probably cheap insurance. I've come across precautionary tails of > the vent becoming plugged closed or degrading open. Just be aware. > > Josh Muckley > S/V Sea Hawk > 1989 C&C 37+ > Solomons, MD > > On Mon, Jan 29, 2018, 1:29 PM Patrick Davin via CnC-List < > cnc-list@cnc-list.com> wrote: > >> Does anyone have a vented loop on their engine cooling water hose >> (between the heat exchanger and the exhaust elbow)? Do you think it's >> necessary, and any regrets / things you would change? If you have one, >> where is it mounted? (particularly for LF38 layout, but any C&C over 32' >> would probably be relevant) >> >> I searched the archives for previous discussion of this but couldn't find >> anything. A diesel mechanic I'm having work on the engine (Yanmar 3HMF) >> recommended a vented loop as a precautionary / extra-careful measure. Our >> exhaust elbow is a few feet above waterline, and I'm skeptical we could >> ever be heeled enough to bring it below heeled waterline (we've had the >> toerail in the water before, and afaik the boat has never had a waterlock >> issue). But I see his point about it maybe being cheap insurance against a >> big problem. >> >> Background: a vented loop is sometimes installed between the heat >> exchanger and the exhaust elbow to prevent water in the hose from siphoning >> into the engine, resulting in hydrolock or worse (engine being ruined). It >> has nothing to do with the exhaust hose exiting the boat (past the exhaust >> riser). The need for it is determined by whether the exhaust elbow can be >> below heeled waterline or not. Opinions on the Internet diverge (some >> people think they're necessary, some don't). So I'm interested in what C&C >> folks have since this is very specific to engine layout. >> >> -Patrick >> 1984 C&C LF38 >> >> _______________________________________________ >> >> Thanks everyone for supporting this list with your contributions. Each >> and every one is greatly appreciated. If you want to support the list - >> use PayPal to send contribution -- https://www.paypal.me/stumurray >> >> > _______________________________________________ > > Thanks everyone for supporting this list with your contributions. Each > and every one is greatly appreciated. If you want to support the list - > use PayPal to send contribution -- https://www.paypal.me/stumurray > > > -- Andrew Burton 61 W Narragansett Ave Newport, RI USA 02840 http://sites.google.com/site/andrewburtonyachtservices/ phone +401 965 5260
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