Tony, If you think a little about what you just asked "To my way of thinking(dah),the engine heat is transferred to the coolant. Thinner metal tranfers heat faster than thick metal. So why may a thinner cylinder run hotter if the cooling system is up to the task?", you will see that the answer lies within the question. Being an Electrician, think of a heatsink.

Oly in Oregon

Rest in Peace

1945 GMC COE Victory Truck
1953 Willys CJ3B
1955 Chevy 1st series 3/4-ton
1958 WIFE Last series

Never say "Whoa" in a mud hole