04-01-2012, 11:40 AM
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#1 |
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Join Date: Dec 2008
Posts: 412
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sooooooooo...how hot is too hot?
How hot should the top end get on a 150cc air cooled Loncin lump? If the cooling fins get wet it sizzles pretty violently, but the bottom end isn't too bad...I can hold my hand to clutch cover for a three or four seconds so it's not unreasonable. I do have some heat concerns, though, and am going to get a temp gun after it later...just curious what I need to look for.
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http://www.duncandesignsstudio.com/justinsoddprojects/ |
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04-01-2012, 12:48 PM
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#2 |
Join Date: Mar 2009
Location: Sardis, BC, Canada
Posts: 25,977
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Never actually measured one, but my guess would be that if you can hold your hand on it, it's not more than 120F. Please let us know what you find.
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Weldangrind "I figure I'm well-prepared for coping with a bike that comes from the factory with unresolved issues and that rewards the self-reliant owner." - Buccaneer |
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04-01-2012, 12:55 PM
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#3 |
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Join Date: Dec 2008
Posts: 412
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I can put my hand on the case...so I'm not too worried about case temps. I can cook on the head. I know that my old GS750 the head temperatures were 350~400*f, with the jug temps being a little on the warmer side.
I'll measure them later tonight but I don't know if these singles should be warmer or cooler.
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04-01-2012, 02:49 PM
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#4 |
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Join Date: Mar 2012
Posts: 33
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Liquid cooled vs air cooled lol.
What weight oil are you using? 15w40 will help to cool the engine better than (ex) 5x30. |
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04-01-2012, 03:31 PM
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#5 |
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Join Date: Dec 2008
Posts: 412
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10 30 probably. It's due for an oil change, though....stuff is starting to look a little thin.
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