Engine temps.

bigheavy150 · 01-07-2011, 07:38 PM

Today i went and borrowed a nice infrared thermometer to check my temps after i did some jetting here is what i got.
all temps are in Fahrenheit

Head: 240-280 hottest on the exhaust side about 240 by sparkplug.
Top of valve cover: 180-210
Cylinder: about 250
Oil: 160
Header 400-600 hottest at the first bend. lowest right where it exits the cyl.
Ambient temp: 80-85

Also my tire temp was 108.5 front and 105 back

its a pretty nice temp gun so im confident in the numbers.Its a new Loncin 162FMJ(150 pushrod) with bout 90km so far running mobil (regular) 20w-50 and premium gas. I putted around town for 15 minuets then gave it a few blasts down a 3/4mile stretch. It seems to pull better both high and low.

I adjusted carb to 3 turns out on idle mix and moved the needle clip down a notch.But my plug still looks white,ashy and hot looking.No more farting out the carb or stalling at idle or nuthing. she will start cold without choke but needs some throttle to keep running.

So what do these temps tell me? everything is good right?

01-07-2011, 07:38 PM	#1
bigheavy150 Join Date: Jan 2011 Posts: 119	Engine temps. Today i went and borrowed a nice infrared thermometer to check my temps after i did some jetting here is what i got. all temps are in Fahrenheit Head: 240-280 hottest on the exhaust side about 240 by sparkplug. Top of valve cover: 180-210 Cylinder: about 250 Oil: 160 Header 400-600 hottest at the first bend. lowest right where it exits the cyl. Ambient temp: 80-85 Also my tire temp was 108.5 front and 105 back its a pretty nice temp gun so im confident in the numbers.Its a new Loncin 162FMJ(150 pushrod) with bout 90km so far running mobil (regular) 20w-50 and premium gas. I putted around town for 15 minuets then gave it a few blasts down a 3/4mile stretch. It seems to pull better both high and low. I adjusted carb to 3 turns out on idle mix and moved the needle clip down a notch.But my plug still looks white,ashy and hot looking.No more farting out the carb or stalling at idle or nuthing. she will start cold without choke but needs some throttle to keep running. So what do these temps tell me? everything is good right?
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