Engine Temp. Question
Road Captain
Joined: May 2008
Posts: 516
Likes: 1
From: New Hampster!
Well using an IR thermometer, checked with a electronic bulb type thermometer of 4 bikes i tested after a hour run head temps were in the 350 range for front and 400 range for rear. Measured on the flat next to spark plug. Oil temps were in the 215-235 range. You need to remember that exaust gas temps are in the 1400 -1600 range under load. gasoline ignites at like 450-475 (cant recall exactly) cams , compression add to that.
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Road Master
Joined: Sep 2007
Posts: 872
Likes: 1
From: Uxbridge, Ma
Thanks for all the input. I was just curious as I just installed a PCV on my Road King. I took the bike for a 30-40 minute run and when I got home I connected my lap top to the bike and the reading again was 255 degrees. I would assume the oil temp was lower than that, but by all indications I have nothing to worry about. (not that I was worried I was simply curious). BTW - for anyone who is interested the other day when I went out the outside temp high 80's and humid. The ride was a good mix of in town and highway. - Anyway - thanks again everyone.
Ultimate HDF Member
Joined: Nov 2007
Posts: 6,975
Likes: 12
From: NJ
Thanks for all the input. I was just curious as I just installed a PCV on my Road King. I took the bike for a 30-40 minute run and when I got home I connected my lap top to the bike and the reading again was 255 degrees. I would assume the oil temp was lower than that, but by all indications I have nothing to worry about. (not that I was worried I was simply curious). BTW - for anyone who is interested the other day when I went out the outside temp high 80's and humid. The ride was a good mix of in town and highway. - Anyway - thanks again everyone.
Elite HDF Member
Joined: Dec 2007
Posts: 4,271
Likes: 29
From: Green Country,Oklahoma
I have a oil temp gague in the fairing of of my 05 eg.Sender is in the oil pan.230 degrees 100 air temp 80 mph over hill and dale.Doesn't seem to go much higher than that even in traffic.Mobile 1 VTwin 20-50.
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Cruiser
Joined: Apr 2009
Posts: 109
Likes: 0
From: georgia
I had same questions when i install pcv trust me it runs cooler than factory settings, i put oil temp gauge on my and runs about 215 to 230 on hot days and i leaned mine out some from fuelmotos settings and could go a little more. Just ride it like you stole it.
