How hot is too hot? - Kawasaki Vulcan 750 Forum : Kawasaki VN750 Forums
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post #1 of 15 (permalink) Old 06-21-2011, 04:49 PM Thread Starter
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How hot is too hot?

I'm riding a 2006 VN750. As the weather starts to heat up I'm noticing that sometimes it seems like the bike is running very hot.

My question is this: if the heat indicator is drifting onto the "hot" side of the gauge, but still isn't in the red, is there any cause for concern?

Thanks in advance for any help you guys can provide.
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post #2 of 15 (permalink) Old 06-21-2011, 05:17 PM
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Quote:
Originally Posted by CRVulcan View Post
I'm riding a 2006 VN750. As the weather starts to heat up I'm noticing that sometimes it seems like the bike is running very hot.

My question is this: if the heat indicator is drifting onto the "hot" side of the gauge, but still isn't in the red, is there any cause for concern?

Thanks in advance for any help you guys can provide.
Here is what my 2001 Owners Manual says " Ordinarily, the needle should stay within the white zone. If needle reaches the " H " line ( red zone )stop the engine and check the coolant level".

My bike very seldom gets above the 1/2 way point, even in 85 degree weather.

JM2001

" Loud Pipes Risk Rights "

2001 Vulcan 750
marbled
TOC upgrade on ACCT
Air/fuel mixture set to 2 1/2 out
rectifier relocated
splines lubed
iridiums
decals removed
upgraded mirrors
Pic up coil mod done
degoated
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Upgraded Mosfet rectifier
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post #3 of 15 (permalink) Old 06-21-2011, 07:27 PM
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Hi, CRVulcan, welcome to the Forum! Our bikes don't like the heat at all, but there are some great tips here on what to do to prevent future problems. Search for "r/r relocation" ("regulator relocation") to see how to address the biggest challenge (hopefully someone will jump in and post a link for you). Other things to consider are to make sure your fan is coming on when it's hot out (we all can help you with that); and finally, some of us use a product called Engine Ice as our coolant. It does seem to help the bike run just a tad cooler than regular coolant.

C
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post #4 of 15 (permalink) Old 06-21-2011, 10:20 PM
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Quote:
Originally Posted by CRVulcan View Post
I'm riding a 2006 VN750. As the weather starts to heat up I'm noticing that sometimes it seems like the bike is running very hot.

My question is this: if the heat indicator is drifting onto the "hot" side of the gauge, but still isn't in the red, is there any cause for concern?

Thanks in advance for any help you guys can provide.
Welcome to the Vulcan madness.
Does your cooling fan come on when the temp gauge needle starts to climb?
If you can`t hear it, pull over somewhere safe and look.

Gordon

1991 VN 750 -"Cosmic Lady" or "Bad Girl"?
Purchased May 16, 2008
Approx.19,300km (12,000 miles)

H-D windshield
Relocated R/R
MF-AGM battery
Fiamm Freeway Blaster horns
F&S luggage rack and engine guard
Kury Offset Hiway pegs
July 13, 2016, Riding on the DARKSIDE now, Classic Radial 165/80-15


TOP TEN THINGS A NEW RIDER/OWNER SHOULD DO. Click on link.
https://www.vn750.com/forum/11-vn750-general-discussion/9127-top-ten-items-you-would-suggest-new-owner-do-his-new-ride.html
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post #5 of 15 (permalink) Old 06-22-2011, 08:39 AM Thread Starter
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Quote:
Originally Posted by Crobins365 View Post
Hi, CRVulcan, welcome to the Forum! Our bikes don't like the heat at all, but there are some great tips here on what to do to prevent future problems. Search for "r/r relocation" ("regulator relocation") to see how to address the biggest challenge (hopefully someone will jump in and post a link for you). Other things to consider are to make sure your fan is coming on when it's hot out (we all can help you with that); and finally, some of us use a product called Engine Ice as our coolant. It does seem to help the bike run just a tad cooler than regular coolant.
I found the instructions for the r/r relocation, and it doesn't look like it should be too hard to get done. I'll maybe take a swing at that this weekend.

Is changing the coolant particularly difficult? I'm waiting for my Clymer's guide to arrive, but I'm wondering if that's going to be something that I need to have a mechanic do.

Quote:
Originally Posted by OlHossCanada View Post
Welcome to the Vulcan madness.
Does your cooling fan come on when the temp gauge needle starts to climb?
If you can`t hear it, pull over somewhere safe and look.
My cooling fan does turn on, and often runs for 10-30 seconds after I park the bike. From reading around the forum, it sounds like that's a pretty normal thing for this bike to do.

Thanks for the help guys!

Edit: By the way, this is only happening when the temperature is in the 90+ range.
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post #6 of 15 (permalink) Old 06-22-2011, 08:50 AM
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Changing the coolant is pretty simple. There are instructions in the Clymer manual, or a much more detailed and thourough set of instructions on here somewhere, I actually just came across them earlier today.

Either way if you are at all handy, I would suggest trying this yourself.

Cheers and good luck
Matt

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post #7 of 15 (permalink) Old 06-22-2011, 09:40 AM
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Been riding mine in the Texas summers for 2 years, working on it's 3rd. Temp gauge gets up there sometimes, but has never gotten to the red zone.

I've ridden when it's well above 100 and have not had any problems with overheating.

Global warming? So what if my kids never see a polar bear. I never saw a dinosaur and I'm ok.
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post #8 of 15 (permalink) Old 06-22-2011, 10:46 AM
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Coolant change - with photos:
https://www.vn750.com/forum/showthread.php?t=6116

Gordon

1991 VN 750 -"Cosmic Lady" or "Bad Girl"?
Purchased May 16, 2008
Approx.19,300km (12,000 miles)

H-D windshield
Relocated R/R
MF-AGM battery
Fiamm Freeway Blaster horns
F&S luggage rack and engine guard
Kury Offset Hiway pegs
July 13, 2016, Riding on the DARKSIDE now, Classic Radial 165/80-15


TOP TEN THINGS A NEW RIDER/OWNER SHOULD DO. Click on link.
https://www.vn750.com/forum/showthread.php?t=9127
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post #9 of 15 (permalink) Old 06-22-2011, 10:56 AM
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This is from last summer, in our back yard. Thermometer was in the sun, but then again, so was I. I rode the bike that day.
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Global warming? So what if my kids never see a polar bear. I never saw a dinosaur and I'm ok.
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post #10 of 15 (permalink) Old 06-22-2011, 01:15 PM
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Out here in the NM desert I have noticed my Vulcan's temp needle to just go a little past center (maybe a little further if I'm running her hard) when it's over 100. The fan doesn't start til I park her.
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