| Author |
Message |
JJ (152.163.197.59)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Tuesday, May 22, 2001 - 12:34 am: | |
Any reason to not install a water-cooled (2 cyl.)Onan, gasoline, 6.5 KW ex-marine genset in my 4905? It has a water cooled exhaust manifold (cracked, readily repairable) 110/2120/12 V. in apparently good condition. It seems a bit heavier than other 6.5's . This is an older unit with the analog controls, not the computer controlled later series. Any caveats to consider? This would be a nice step up from my old one-lung Kohler 4 KW unit. Could I remove the water-jacket manifold? run it dry? change it out for another, non water-cooled model of exhaust? Thanks...JJ |
Don Jones (207.142.226.11)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Thursday, May 24, 2001 - 1:02 pm: | |
Generally in marine applications the exhaust manifold is cooled by raw (the water the boat is siting in). This water is then dumped into the exhaust. Often the rest of the motor is cooled by fresh water with a heat exchanger. I think trying to cool an exhaust manifold with a radiator would result in rather a large radiator. I would look for a dry exhaust manifold. Other than that it should work fine. I put a Kabota marine generator in a bus it worked fine. If you do pull out the Kohler I would be interested in it. |
Steve Fessenden (208.230.117.50)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Saturday, May 26, 2001 - 5:06 pm: | |
I have a Kohler 12.5 KW generator with a Perkins 4108 engine. The exhaust manifold is wate cooled through the radiator. It reduces compartment tempuratures and noise. I'd stay with the water cooled manifold.
Steve Fessenden |
gduxbury (24.163.191.108)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Wednesday, June 27, 2001 - 11:11 pm: | |
I am also putting the onan 6.5 marine in my coach. One thing to be aware of is the marine water pump has a rubber impeller which will not take hot water. There is a hot water pump by Onan but I don't know anything about it. I am currently installing a snowmobile water pump as a replacement. Shoestring conversion, will see how it works
Dux |
FAST FRED (63.215.234.49)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Thursday, June 28, 2001 - 5:59 am: | |
TO run hot water in a standard marine pump all it takes is assembling the pump with 1 or 2 EXTRA gaskets .
This gives the rubber impeller some place to grow, and not wear out , from expanding.
FAST FRED |
Jim Wilke (205.188.192.54)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Thursday, June 28, 2001 - 7:36 am: | |
To convert a heat exchanged marine genset to radiator cooled, first check to see that you have both the rubber impeller pump (sea water) and the automotive style fresh water circulating pump on the engine block. If you have both, remove the rubber impeller pump & the heat exchanger. Connect the fresh water hoses coming from the engine to your radiator. By the way, if you are using the marine water cooled exhaust manifold, your radiator will need to be sized about 25-30% larger than for the same genset with a "hot" manifold.
Jim-Bob |