I've also done the timing belt in the cold several times, it just makes for a slightly stiffer belt to install. If the timing doesn't get screwy when you go from warm to cold months while it's already installed then the temp that it's installed at won't matter.

Erik P.
Official 2GNT thread Hijacker
Some say that he's driven over more Covenant than he's shot, and that his grenades aren't where you'd expect them to be...
All we know is, He's not The Stig... But he is The Stig's Spartan cousin!