View Single Post
Old 03-26-2013, 11:37 AM
16v4nrbrgr's Avatar
16v4nrbrgr 16v4nrbrgr is offline
Motorized Bicycle Elite Member
Join Date: Mar 2012
Location: North Bay
Posts: 1,711
Default Re: 2-stroke 'over heating' myth...

The cooling fins are about the same size but the jug is cast iron on my KTM clone, and I have a meat thermometer stuck in the head, it runs at 110F with airflow, and idling stopped it goes up to 180F, this thing must have 13:1 compression or more, I lapped it to the perfect squish and it has a tiny hemi combustion chamber. The aluminum jug on the HT will cool better, especially if painted flat black, that goes for the whole engine really. Use high octane and run rich when you're high comp, or holes in pistons can occur! 8-O
KTM50 Schwinn Chopper - 6000W E-Motard - 52cc Auger BMX - 9sp+CVT 52cc Cagllari Moped
Reply With Quote