Overheating? - Honda Shadow Forums : Shadow Motorcycle Forum
 
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post #1 of 4 (permalink) Old 05-25-2019, 11:23 AM Thread Starter
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Overheating?

So, I finally finished putting my bike back together. 85 Honda Shadow vt700, upgraded carb jets, drilled out the baffles on the exhaust (hehe) some stripping and painting, and she runs GREAT!! However....it seems to run much hotter now, it’s not OVERheating, but the temp creeps up pretty high especially when idling. Ian there anything more I can do to help keep the temperature down??

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post #2 of 4 (permalink) Old 05-25-2019, 12:06 PM
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Model: Vt750
Year: 1983
Location: Washington State
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Depends a lot on the temperature where you are. But the gauge will run up close to the red zone and then the fan will come on if all is working. Make sure the radiator is completely filled/burped.There is not air flow past the radiator sitting still.


Only a biker knows why a dog sticks his head out of a car window.
1983 750 Shadow
From the past=
1951 Cushman scooter
1962 Honda 305 Dream
1965 Honda 305 Dream
1971 Honda 175 scrambler
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post #3 of 4 (permalink) Old 05-25-2019, 12:41 PM
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Year: 1985
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Another thing to look at is the condition of the fins on the radiator. As @swifty2014 says, there is no air flow past the radiator when sitting still. Pull the plastic shroud off the radiator (1 small bolt at bottom, two tangs at top) and inspect your radiator fins. You should be able to see through the fins easily, and not have an excessive number bent/flattened from stone damage due to the short front fender allowing gravel flinging backwards. Use high pressure hose to flush any mud or debris out of the fins. If you want, it's not a bad idea to have a spare fan thermostat (lower left corner of radiator, two-wire connector) that may kick in at a slightly lower temp, available online.

If it jams, force it. If it breaks it needed replacing anyway.

Last edited by ShadowGeezer; 05-25-2019 at 12:42 PM. Reason: spelling
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post #4 of 4 (permalink) Old 05-25-2019, 07:49 PM
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If the bike ran cooler before, I'm with @swifty2014 . It's the most common issue. Burp it and see. Also, you've changed jetting. If it's running leaner than before, it can also make it run hotter.

http://2007 Shadow Spirit VT750C2, Ride bell by h13man, Ride cross by Capt D

Last edited by smilie; 05-25-2019 at 07:51 PM.
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