Anybody know when the 376 was first built? The question popped into my head when I was trying to get parts for my exhaust. Went to Blue Water to get the parts (Insulator and mixing elbow) and they said I had the wrong parts for my engine. After closer examination, it seems Yenmar have 3 different options for my engine (3jh2e). Two of them have a 3 inch hose and the third, which is mine, has a 2 inch hose. I'm wondering if that design difference has any bearing on the fact that my hoses smell smokey and burnt. I thought about replacing the whole exhaust system with the 3" parts, but then realized the boat is designed for a 2" system and would require a lot of work including changing the location of the muffler and inlarging holes in the boat including the thru-hull. Thoughts?
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My 376
Franklin, I first saw the 376 during, but not at, the London Boat show in January 1996 when I ordered mine. It was from the first batch of 50 and was delivered to the UK in June 2006. It seems likely that the first units for sale were launched in the period March to June 1996. So far mine is still in one piece. Regards,
Franklin, I first saw the 376 during, but not at, the London Boat show in January 1996 when I ordered mine. It was from the first batch of 50 and was delivered to the UK in June 2006. It seems likely that the first units for sale were launched in the period March to June 1996. So far mine is still in one piece. Regards,
Check this link
It's right here on this site. http://www.sailboatowners.com/boats/specs.tpl?fno=0&sku=30179116948439&bts=T
It's right here on this site. http://www.sailboatowners.com/boats/specs.tpl?fno=0&sku=30179116948439&bts=T
Thanks
Donalex and Paul. So they only made the 376 for 3 years? That seems strange to quit in 98 when the 97 got best buy award of the year.
Donalex and Paul. So they only made the 376 for 3 years? That seems strange to quit in 98 when the 97 got best buy award of the year.
Why the Change?
Hunter went thru quite a few design changes in that timeframe. I think the 376 change resulted in a complete model production line change. The 376 legacy lives on in the 380/386 line. Getting parts for your exhaust should be irrelevant to the Hunter model changes. A Yanmar change is a Yanmar change and shouldn't be affected by a Hunter production change.
Hunter went thru quite a few design changes in that timeframe. I think the 376 change resulted in a complete model production line change. The 376 legacy lives on in the 380/386 line. Getting parts for your exhaust should be irrelevant to the Hunter model changes. A Yanmar change is a Yanmar change and shouldn't be affected by a Hunter production change.
Paul
I think you missed the point. If the builder of an engine has three options for the exhaust and two of them are 3" hoses and parts and the third is a 2", that suggests to me that the engine is suppose to run on 3", but a compromise was made for the use of a 2" to satisfy somebody. Now maybe that somebody was Hunter who started to build the 376 and after investing so much money into it, they realized at the last minute that the 3" wasn't going to work in the new design, so they call Yenmar to work on that compromise and come up with a 2" option. If the engine was designed for a 3" and I have a 2" then that may cause problems, such as the one I have now with burning exhaust hoses. I think next weekend I'm going to check the impeller just to make sure the engine isn't running too hot (really wish I had a temperature gauge instead of an idiot light). However, it doesn't make me feel good knowing my engine SHOULD run with a 3" exhaust system. Note: The 3" system takes a 2" exhaust input with a 1" raw water input and combines them at the elbow and then the output of the elbow is 3". Makes sense. The 2" takes a 2" exhaust input and a 1" raw water input and combines them at the elbow andthen output of the elbow is 2". It doesn't add up. 2 + 1 = 3, not 2.
I think you missed the point. If the builder of an engine has three options for the exhaust and two of them are 3" hoses and parts and the third is a 2", that suggests to me that the engine is suppose to run on 3", but a compromise was made for the use of a 2" to satisfy somebody. Now maybe that somebody was Hunter who started to build the 376 and after investing so much money into it, they realized at the last minute that the 3" wasn't going to work in the new design, so they call Yenmar to work on that compromise and come up with a 2" option. If the engine was designed for a 3" and I have a 2" then that may cause problems, such as the one I have now with burning exhaust hoses. I think next weekend I'm going to check the impeller just to make sure the engine isn't running too hot (really wish I had a temperature gauge instead of an idiot light). However, it doesn't make me feel good knowing my engine SHOULD run with a 3" exhaust system. Note: The 3" system takes a 2" exhaust input with a 1" raw water input and combines them at the elbow and then the output of the elbow is 3". Makes sense. The 2" takes a 2" exhaust input and a 1" raw water input and combines them at the elbow andthen output of the elbow is 2". It doesn't add up. 2 + 1 = 3, not 2.
Just to add...
The 2" system has two parts....an insulator and elbow where the 3" just has the elbow. Now what could the need for a second part be for...well...to help cool the exhaust before it enters the elbow so it will condense and make room for the raw water. If that is the case, why would they name it an insulator? You would think they would name it Condensor but insulator is the exact opposite of what you want...and also what it is. An insulator is made of a different material (See definition below) then the metal the "Insulator" is actually made of. Maybe they called it the insulator because it really doesn't work well enough to call it a condensor. Def: A material that insulates, especially a nonconductor of sound, heat, or electricity. A material such as glass or porcelain with negligible electrical or thermal conductivity
The 2" system has two parts....an insulator and elbow where the 3" just has the elbow. Now what could the need for a second part be for...well...to help cool the exhaust before it enters the elbow so it will condense and make room for the raw water. If that is the case, why would they name it an insulator? You would think they would name it Condensor but insulator is the exact opposite of what you want...and also what it is. An insulator is made of a different material (See definition below) then the metal the "Insulator" is actually made of. Maybe they called it the insulator because it really doesn't work well enough to call it a condensor. Def: A material that insulates, especially a nonconductor of sound, heat, or electricity. A material such as glass or porcelain with negligible electrical or thermal conductivity
OK, Franklin...
...your point is taken (I read the question differently). Then this looks like a question that you should pose to the Hunter Design Team. I don't recall anybody ever having a problem like that with a 376 on this board. Having seen Hunter Corp operate, my gut tells me that any coproration wouldn't even take a chance of that magnitude on any production line - large or small.
...your point is taken (I read the question differently). Then this looks like a question that you should pose to the Hunter Design Team. I don't recall anybody ever having a problem like that with a 376 on this board. Having seen Hunter Corp operate, my gut tells me that any coproration wouldn't even take a chance of that magnitude on any production line - large or small.
Exhaust System Bore
The 3JH2 Yanmar is only a 1.3 litre engine - and a relatively slow revving one at that. Compare exhaust bores on vehicles of similar engine capacity which rev twice as fast (i.e. 4X the back pressure) and there is little possibility of excessive back pressure or high temperatures. I believe the exhaust size is more likely selected to suit available hardware, silencer, and radius of bends. My tubing runs cool enough to touch
The 3JH2 Yanmar is only a 1.3 litre engine - and a relatively slow revving one at that. Compare exhaust bores on vehicles of similar engine capacity which rev twice as fast (i.e. 4X the back pressure) and there is little possibility of excessive back pressure or high temperatures. I believe the exhaust size is more likely selected to suit available hardware, silencer, and radius of bends. My tubing runs cool enough to touch
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