knucklehead temps?

[bodnarjw]

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]

If you have the ir gun......then you have way more insight about it than anybody here.