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bodnarjw
05-11-2009, 11:11 AM
Anyone have any insight as to head temperature ranges for knuckleheads?

My head is running at about 375 degrees F near the spark plug. That is exterior head surface temp immediately after normal operation (15 miles easy ride at a variety of speeds)

rear head is about 5 degrees wrmer (to be expected)

Temp taken with a quality IR gun.

My 1995 Harley with Aluminum heads runs at 280 and my 2007 Harley (with lots more pollution control and leaner factory setting) runs at 365.

Thanks,
Jim

fabercycle
05-13-2009, 04:48 PM
If you have the ir gun......then you have way more insight about it than anybody here.