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View Full Version : Optimum engine temp ?


sharky
20-12-2009, 03:43 PM
What's the best operating temp for an engine (air/oil cooled) ?
Jockney Rebel
20-12-2009, 05:18 PM
dunno for air cooled probably about 90-100c?
80s freak
20-12-2009, 07:39 PM
Sounds about rightish to me Jock.
grindella
21-12-2009, 12:12 AM
best operating temperature is an even one, air cooled is hard to say as Ive never seen one documented. Only seen operating temperature listed for water cooled bikes.
Seifer
21-12-2009, 08:45 AM
My oil runs at around 100-110, not sure if optimum but it still works fine :)
Anakist
26-12-2009, 03:28 PM
From what I have read, oil needs to be over 100 to keep any water out.

Engines run more efficiently the hotter they run. Evans NPG+ says when running it in trucks you can run them hotter to get efficiency benefits, but I think you get more NOx and carbon monoxide as the engine heats up (although if they are more efficient, maybe that is relative).

James