gisywaterboy 3 Posted August 13, 2018 Share Posted August 13, 2018 Hi there, Does anyone have the contact details of the guy that makes the S/S Yanmar exhaust elbow for 2GM20F? Or anyone know where I can get a cheap one? Thanks. Quote Link to post Share on other sites
Crazyhorse 47 Posted August 13, 2018 Share Posted August 13, 2018 He was selling them on trademe. Had a look, nothing. It was about 4 years ago though sorry, trying to wrack the grey matter to remember where he was but I think he was south island. Will try to find out. Found it: ($150). Jeff Christensen OK, located another email (2013!) and he didn't make it but might know who does?. Lives in Kerikeri. I shall now go hide my own easter eggs! Good luck. Quote Link to post Share on other sites
marinheiro 352 Posted August 14, 2018 Share Posted August 14, 2018 Try www.marineenergy.com.au Quote Link to post Share on other sites
gisywaterboy 3 Posted August 14, 2018 Author Share Posted August 14, 2018 So, on further research it looks like the following models all use the same elbow Used on the following engines: 2GM, 2GMF, 2GM20F, 2GM20FUE, 3GMFYE, 3GMD, 3HM, 3HMF, 3HM35F, 3HM35, 3GM30, 3GM30F If this is the case it makes it a bit easier to find one. Quote Link to post Share on other sites
harrytom 642 Posted August 14, 2018 Share Posted August 14, 2018 made one using galvanized water pipe,put a nipple in on angle,about 150mm down from bend,never had a water back flow problem,4yrs on still there. previous elbow was steel as well lasted 15yrs. 1 Quote Link to post Share on other sites
nagy592 21 Posted August 14, 2018 Share Posted August 14, 2018 made one using galvanized water pipe,put a nipple in on angle,about 150mm down from bend,never had a water back flow problem,4yrs on still there. previous elbow was steel as well lasted 15yrs. Is it simple? Is it cost effective? Yes. Great to see some creativity over the "get a new one" perspective. 1 Quote Link to post Share on other sites
Crazyhorse 47 Posted August 14, 2018 Share Posted August 14, 2018 Just got an answer from the guy who I bought mine off. He imported them from the US!! (OK, its been nearly 5 years since I got ours off him). Gave me this link; https://www.ebay.com/itm/Exhaust-Mixing-Elbow-for-1GM10-Yanmar-1GM10-2GM-128170-13530-316SS/352423345141?hash=item520e117bf5:g:ZRYAAOSwKrhVfDwa&_sacat=0&_nkw=yanmar+GM20+exhaust&_from=R40&rt=nc&_trksid=m570.l1313 Quote Link to post Share on other sites
vic008 17 Posted August 14, 2018 Share Posted August 14, 2018 I just got some pipe fittings for the old Bukh and welded it, then hot galv. Still good 10yr later 1 Quote Link to post Share on other sites
marinheiro 352 Posted August 15, 2018 Share Posted August 15, 2018 welded 316SS is not a good idea in this application, the chlorides in the salt water and the sulphur residues in the exhaust will vigorously attack the welds. Welded steel pipe galvanised is a much better budget option 1 Quote Link to post Share on other sites
nagy592 21 Posted August 16, 2018 Share Posted August 16, 2018 Oh what a coincident, I just checked my one yesterday... I shouldn't have. One more thing on my list. I think I'll make it from S/S tubes, TIG welded and purged. I might make two just in case.... It will be a mission to remove it. Quote Link to post Share on other sites
Crazyhorse 47 Posted August 16, 2018 Share Posted August 16, 2018 You've had a raw water leak? Our original yanmar made elbow looked bad but when we removed it was actually in good nic. It was lined in some bronze paint and cleaned out, looked like new. Take it off and clean the soot out for a good look before buying a replacement. Speaking of leaking raw water, a word of warning for 2GM20 owners. The head anode when removed is liable to drop water on a oil feed pipe that runs from the block to the head. After some years of replacing anodes, our oil pipe finally leaked oil everywhere off Tutukaka as its steel and corroded through. Only an issue for raw water cooled engines. (4 hours sailing into a head wind, no motor to get into Tutukaka!) Quote Link to post Share on other sites
nagy592 21 Posted August 16, 2018 Share Posted August 16, 2018 Apparently I don't have leak, but the rust murk telling me it wasn't always like that. I did not planed to do too much with the engine, apart from oil change and anodes, but I have to deal with this for a couple of reason, #1, I don't need any water leak, #2 if I going to get folding prop, I need every single HP out from the engine, so worth it to clean the soot at least. I already started to make up my version for this out of stainless steel, I'll post some pictures about the progress. Not as difficult (obviously the welded version not the cast). When I checked the suggested sources I decided to give it a try. Quote Link to post Share on other sites
Crazyhorse 47 Posted August 17, 2018 Share Posted August 17, 2018 Apparently I don't have leak, but the rust murk telling me it wasn't always like that. I did not planed to do too much with the engine, apart from oil change and anodes, but I have to deal with this for a couple of reason, #1, I don't need any water leak, #2 if I going to get folding prop, I need every single HP out from the engine, so worth it to clean the soot at least. I already started to make up my version for this out of stainless steel, I'll post some pictures about the progress. Not as difficult (obviously the welded version not the cast). When I checked the suggested sources I decided to give it a try. Will watch with interest nagy, good luck. I have heard of fibreglass elbows but fibreglass burns? Quote Link to post Share on other sites
nagy592 21 Posted August 17, 2018 Share Posted August 17, 2018 Well, the external tube shouldn't be too hot unless the water is not running. The external one, which is for the exhaust it could be hot and the flange as well. Quote Link to post Share on other sites
harrytom 642 Posted August 17, 2018 Share Posted August 17, 2018 Apparently I don't have leak, but the rust murk telling me it wasn't always like that. I did not planed to do too much with the engine, apart from oil change and anodes, but I have to deal with this for a couple of reason, #1, I don't need any water leak, #2 if I going to get folding prop, I need every single HP out from the engine, so worth it to clean the soot at least. I already started to make up my version for this out of stainless steel, I'll post some pictures about the progress. Not as difficult (obviously the welded version not the cast). When I checked the suggested sources I decided to give it a try. Replace it.Ours was rusty looking and thought she ll be right,11.30pm middle of tiri passage she let go,amazing how much water can be pumped in in a short time.soot through yacht,.20hr drift back to panmure Quote Link to post Share on other sites
nagy592 21 Posted August 17, 2018 Share Posted August 17, 2018 Right, as I don't have the sample in hand, I couldn't make the proper flange, but I have enough excess material to shape it. Also I put a socket for the water intake, rather than a hosetail. I think it will do the trick., somehow I couldn't attach pictures, so here is an external link https://photos.app.goo.gl/qSy2Wy7HTJUPzNjM8 1 Quote Link to post Share on other sites
Crazyhorse 47 Posted August 18, 2018 Share Posted August 18, 2018 Replace it.Ours was rusty looking and thought she ll be right,11.30pm middle of tiri passage she let go,amazing how much water can be pumped in in a short time.soot through yacht,.20hr drift back to panmure Basil (Pink Cadillac) told me his blew and water got INTO the engine! Said it looked fine from the outside, no way to tell unless you take the mixing elbow off. The reason why we replaced ours. Quote Link to post Share on other sites
Toltec 7 Posted August 18, 2018 Share Posted August 18, 2018 We just replaced mixing elbow on our 15QM $400.00 for the elbow thought standard 1.5 in bsp pipe socket that goes into the elbow found out elbow left hand thread now know why we couldn’t get the old one out so another $108.00 for the left to right hand socket.Am keen to see how your one works out.Ours was 6 years old and we cleaned it out once so about a $100.00 a year.Motor does run a lot smoother and pumps a lot more water.Have heard of some expensive experiences when they have failed Quote Link to post Share on other sites
gisywaterboy 3 Posted August 20, 2018 Author Share Posted August 20, 2018 Thanks for your suggestions guys, I brought one from Marine Diesel Services in Tauranga, Really good to deal with and quick to put it on courier for me. Right parts first time, Cant complain. Quote Link to post Share on other sites
unpc 5 Posted August 20, 2018 Share Posted August 20, 2018 Just had it replaced after about 5 years. $1100 including 6 hours labour at 95 plus gst. Quote Link to post Share on other sites
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