optimal run time temp etc

GoldenMotor.com

graydog8josh

Member
Nov 23, 2012
450
4
18
Starkville,MS
How long can i run my motor before i should stop and let it cool? Are there any signs that will let me know to stop and give it a rest or do i need to install an egt? I want to plan a trip in the near future a couple of hours and i dont want to melt down on the way.
 

2door

Moderator
Staff member
Sep 15, 2008
16,302
175
63
Littleton, Colorado
Once the engine reaches its normal operating temperature, and you're not spending a lot of time idling, it shouldn't get much hotter. Assuming you have an air cooled engine the air moving over the cylinder and head is the way it dissipates heat. Even prolonged running should not increase the engine temperature significantly.

This is especially true with a 2 cycle engine that gets its lubrication from the oil mixed with the fuel. By comparason, a 4 stroke engine with oil in a crankcase can see some loss of lubrication due to the breakdown of oil at high temperature. This would not be a factor with modern oil in a motorized bicycle however because you're never going to run it far or long enough to see any appreciable oil degradation between oil changes.

There really is no advantage to a "cool down" period other than to give your butt a break :)

Tom
 
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