How JustAnswer Works:
  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site.
    Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.
Ask Kenny O. Your Own Question
Kenny O.
Kenny O., Motorcycle, ATV, Mules, Side by Side's Product Specialist. All Brands
Category: Motorcycle
Satisfied Customers: 953
Experience:  Worked for Kawasaki Motors as a Product Support Specialist (Factory Support) for 24 years
30381042
Type Your Motorcycle Question Here...
Kenny O. is online now
A new question is answered every 9 seconds

What is the normal operating tempature 750 cc honda v twin

Customer Question

what is the normal operating tempature for a 750 cc honda v twin 1998
Submitted: 10 months ago.
Category: Motorcycle
Expert:  Kenny O. replied 10 months ago.

Hey this is Kenny, how's it going, normal operating temp on this is going to be about 180-195 and then the fan will kick on about 205-210 about. Is this still acting up ?

Customer: replied 10 months ago.
Hey Kenny yeah the radiator I did what you said with the infrared gun and it was raining different temperatures all over the place from 195 200 down to as low as 85 the exhaust coming out was running about 210 in the engine front engine was running about 200 205 in the rear end or is running about 160
Expert:  Kenny O. replied 10 months ago.

The radiator at the top will be the hottest, that as the engine reaches and the complete system equalizes it should be on the average of about 185-195 with a little cooler on the bottom after it flows through the radiator, now this is all relevant to the ambient temp you are in. I wouldn't necessary worry about exhaust temp as most of the exhaust is doubled walled.

What part of the radiator was at 85 degrees ?

Customer: replied 10 months ago.
The lower bottom was coolest the puff of white smoke I swear smelled like oil but the oil level is perfect maybe this Is all in my head but why would the rear vtwin be cooler than the front is that normal?
Expert:  Kenny O. replied 10 months ago.

Not sure I understand, you are worried about the rear cylinder verses the front cylinder not running the same temperature ? When you checked this were you letting it idle, or did you ride the bike and then check the temperature ?

Customer: replied 10 months ago.
Does not matter when Kenny whether it's idling or whether you're riding it if you touch the front motor it's much hotter than the back motor it's about 30 to 40° cooler I'm just wondering why that would be
Expert:  Kenny O. replied 10 months ago.

Yes for proper saturation and distribution and for everything to equalize you need to go ride the bike, I would put about 5 miles and then start checking the temperatures in various places, that will give you more of a truer reading. I think once you do that you see that they will be pretty equal.

Customer: replied 10 months ago.
I will try that
Expert:  Kenny O. replied 10 months ago.

Cool, let me know !

Customer: replied 10 months ago.
The front is running 202 and the rear is running 177
Expert:  Kenny O. replied 10 months ago.

Little over 20 degrees, I know the v twin ATVs the rear cylinders run a little cooler to the point where its jetted differently, I wanna say that's about right, I'll bet on a warm day that number will be closer.

Customer: replied 10 months ago.
those are normal operating temps? Must be in my head
Expert:  Kenny O. replied 10 months ago.

They are not out of line, you want the rear cooler anyway as its closer to your body, especially on those really hot days.

Customer: replied 10 months ago.
Thanks Kenny I must be nuts lol head games
Expert:  Kenny O. replied 10 months ago.

Ahh you're OK, being cautious is alright !

Thanks