How cold before engine damage?

[Matt_E]

I believe that may have something to do with different air densities at different temperatures.

 

[Bigmax]

As the temp goes down the air gets more dense and your air / fuel ratio changes... ie. becomes more lean. It's not as noticable in the summer but if you ride snowmobiles in the winter it's amazing the difference. They also run the best right before you burn a piston... LOL

 

[waxhead]

you want a cold seziure
try running a twin cooled ski with incorrect cooling for a long run
you will get a lovely cold seziure