Why so much heat? Not an overheating thread

[tjts1]

Originally Posted by lkchris

You're laughing in ignorance again.

ORLY? Why don't you enlighten us why a hot engine bay makes the engine more efficient?

Originally Posted by mak

my 89 300se Euro had tremendous amount of heat soak after shut-down. this would lead to stuttering re- starts for a few seconds. problem resolved by installing a exhaust heat wrap .The under hood temperature has dropped dramatically. Amazing difference in hot starts too.
mak

Bingo. A heat shield makes a big difference on these cars. My only concern with exhaust wrap is that I've seen it cause cast manifolds to crack on occasion. I'm plotting an aluminum cover.