tag:blogger.com,1999:blog-7533222874425432014.post5105351162487002699..comments2024-01-04T02:44:18.025-05:00Comments on s/v Pelican - Following A Dream: Engine saga continued...Chrishttp://www.blogger.com/profile/16093205335972800543noreply@blogger.comBlogger6125tag:blogger.com,1999:blog-7533222874425432014.post-79762413644282568672009-10-18T12:07:03.613-04:002009-10-18T12:07:03.613-04:00If you are still looking for exhaust elbo i have o...If you are still looking for exhaust elbo i have one, i also have many other parts for 107 or 108 motors, feel free to contact me at (mrsailrr@gmail.com) good luck in your ventures.begenning sailinghttps://www.blogger.com/profile/02825561831091083379noreply@blogger.comtag:blogger.com,1999:blog-7533222874425432014.post-86932921105322358372009-06-26T13:48:49.897-04:002009-06-26T13:48:49.897-04:00They don't have a Perkins. It's a Westerb...They don't have a Perkins. It's a Westerbeke 4-107. However, Perkins parts are easy to find. This is just one of the sites I found with the exhaust elbow you would need for hte 108.<br /><br />http://www.tadiesels.com/exhaust-elbows.html<br /><br />TimAnonymousnoreply@blogger.comtag:blogger.com,1999:blog-7533222874425432014.post-49965892303068512852009-06-21T19:44:49.332-04:002009-06-21T19:44:49.332-04:00IIRC, you have a Perkins 4-108? If so, if you can ...IIRC, you have a Perkins 4-108? If so, if you can tell me where you sourced the exhaust elbow I'd be most grateful. Ours blew and now we can't find the part to fix it.<br /><br />Currently our back up plan is to have a machine shop make us one, but that is the least cost effective method...<br />Thanks!<br />CidnieAnonymousnoreply@blogger.comtag:blogger.com,1999:blog-7533222874425432014.post-11209126951287847232009-06-20T05:47:42.726-04:002009-06-20T05:47:42.726-04:00The engine overheating, especially at high revs, i...The engine overheating, especially at high revs, is another indicration of a blown head gasket. It could be a sticky thermostat, but with all the other indications, that is much less likely. The gasket leaking allows the combustion pressure to enter the coolant passage, preventing the coolant from doing its job. Check your manual, some diesels have cylinder drain cocks. Check them if you have any, and see if coolant comes out. I think you have a secondary coolant loop; the engine isn't cooled by seawater directly. If this is the case, check the coolant for oil/combustion products. That would be further indication of a blown head gasket. You do not want to run with a blown head gasket, as the combustion gasses will erode a groove in the head, or worse, the engine block. Heads are expensive. Blocks are... more than expensive.Poppinoreply@blogger.comtag:blogger.com,1999:blog-7533222874425432014.post-58634151067041946142009-06-18T07:31:30.910-04:002009-06-18T07:31:30.910-04:00Chris,
Been following your Blog for a bit, getting...Chris,<br />Been following your Blog for a bit, getting our own kids hyped about our trip to the Bahamas that starts next week. Chin up WRT the engine. When my wife and I lived aboard before we had kids we not only had to replace our engine when we got to NC, the replacement gave us problems (couldn't get over 1800rpms, went from Marathon to Oriental, NC top speed of 3kts!!!!). We basically memorized the ICW!!!<br />Maybe we'll cross paths, first leg of our trip is to Coxsackie Yacht Club on the Hudson. Heres's the link to our Blog<br />http://steelestreetoceaneers.blogspot.com/<br /><br />Take care and good luck,<br />Mark.S/V Waterfallhttps://www.blogger.com/profile/06991555355503633447noreply@blogger.comtag:blogger.com,1999:blog-7533222874425432014.post-19090633828489164052009-06-17T22:10:58.563-04:002009-06-17T22:10:58.563-04:00Chris:
Assuming the engine is mechanically ok and ...Chris:<br />Assuming the engine is mechanically ok and putting out its rated HP and torque, you are to size the prop so at full throttle you will be at your rated top engine rpm. Any less rpm and you are lugging the engine which will destroy it over time.<br />There are 2 main variables to sizing a prop, diameter and pitch. A 12 x 14 prop would read 12" diameter and 14" pitch. Other variables are cup (the curl at the trailing edge of the prop)and rake (the distance the blades are offset fore and aft of the hub). There are others but that gets complicated.<br />The boat and engine manufacturer should already have the correct prop selected for your hull/engine combination. Or at least what diameter is most efficient and choose a pitch to match your boat. Unfortunately, previous owners change things around, engines get changed and you don't know what was factory correct.<br />Bottom line - Match that max rpm!Waynenoreply@blogger.com