Morgans wrote:
"Morgans" wrote

At least that is my take on what they say.

I should have added that the cylinders heating up faster, on start up,
than the pistons would increase the tolerances, and thus cause no scuffing.

Why would the cylinders heat up faster? Only the very top of the
cylinder is in constant contact with the combustion heat whereas the top
of the piston is entirely in contact. As you go down the cylinder away
from the head, the cylinder spends less and less time in contact with
the combustion heat and thus will be cooler.

Matt