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post #1 of 5 (permalink) Old 02-27-2017, 12:00 PM Thread Starter
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What temps are normal on our bikes?

The hottest I've ever seen mine get is just about 3/4 of the way up on the temp gauge. Is that normal?

'86 VN750
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post #2 of 5 (permalink) Old 02-27-2017, 12:19 PM
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I've seen mine get around there so I guess its not abnormal. It was a hot day, in the high 90s, and I was stuck in a lot of stop-n-go traffic. This past year I flushed my cooling system and put in some Engine Ice coolant and a new thermostat. I did it as a matter of regular maintenance and not because I was having overheating problems. I've noticed it now stays two or three needle-widths cooler now than before in normal riding around conditions but I've also not yet had a stop-n-go riding situation in high temp days so I can't compare it yet to those days to see it react to really strenuous conditions. You didn't state what the conditions were when you had your 3/4 reading.

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post #3 of 5 (permalink) Old 02-27-2017, 12:43 PM Thread Starter
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3/4 reading was riding around the neighborhood, kind of pushing it a little around the side streets. It was about 55 degrees out. It kind of fluctuated back and forth between 3/4 and 5/8. I have 50/50 antifreeze in it now, maybe I should fill it with Engine Ice instead. Seems to be highly recommended.

'86 VN750

Last edited by snoopyonderdonk; 02-27-2017 at 12:46 PM.
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post #4 of 5 (permalink) Old 02-27-2017, 12:46 PM
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"Normal" running the temp needle should be pointing straight back.. even on a 90 degree day as long as the bike is moving.

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post #5 of 5 (permalink) Old 06-17-2017, 01:41 AM
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Originally Posted by Knifemaker View Post
"Normal" running the temp needle should be pointing straight back.. even on a 90 degree day as long as the bike is moving.
I took a ride yesterday in the first HOT weather of the season...about 95 here in Kansas City. Normally, my needle pretty much sits 50/50. However, I was on the highway when I first noticed that it was up to 3/4. I presumed this was due to the heat of the day. When I got into town...stop-and-go...it went all the way up to the high side, but never moved into the red. When I got to my folks house and turned it off, I could easily hear the jug boiling away, and there was maybe a cups worth of spillage. I checked the fluid level before I headed home a few hours later, and the same thing happened when I got back into my neighborhood....3/4 on the highway and all the up to the H at the lights. I almost lost it coming off a stop light when the back tire broke loose because I didn't notice it had overflowed some at the light.

When I got back home it was boiling away as I figured it would be. I did not hear the fan running, and so I'm wondering if a bad fan is the culprit. I'm going to check that on days off. After it cooled down I checked the levels at the rad cap and overflow jug. Fluid at the top of the rad neck, and just under the H on the jug, and it was flushed and filled about 10 months ago with 50/50 Dex Cool. So I'm fairly confident it isn't bad coolant as I never had an issue like this in last year's heat.

Someone in the thread mentioned the thermostat. Stupid question alert! Where is the thermostat located on our bikes? Mine is an '03.

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