Engine block temp

[virgil]

This may be a really stupid question, but how hot does an engine block get (outer surface) - I guess not much more than water temp <>90 degrees???

What about the heads? a little hotter

Cheers,

Virg.

[seasider]

Is it melting

[mds automotive]

nominal running temp is around 86 to 92 c this is the temp the stat opens however the water jackets are desinged to conduct the heat away from the bores therefore i would assume anything upto 100 degrees is ok , the head should be a litte cooler than this unless the exhaust manifold is designed to conduct heat into the cooling system via the cylinder head.
if the cooling system is good then whatever temp the block is should be ok too unless its on fire

[mave]

Hmm, I'd expect it to get a lot hotter than 100C close to the exhaust manifold; its hard not to allow heat from the exhaust to conduct back to the head, and if you dodn't allow it the differential thermals would probably snap the maifold studs

[virgil]

seasider said:

Is it melting

Nah...want to paint it pink, but want to make sure the paint isn't going to discolour

[virgil]

Glad I could get a couple of sensible answers. Cheers guys.

[seasider]

virgil said:

seasider said:

Is it melting

Nah...want to paint it pink,

You'll give those Chimp boys ideas....

[jwb]

My brother sprayed his engine block pink to match the body colour. He used celulose and I seem to remember it was fine.

What is more important is prep of the block, no oil or grease and a good etch prime.

John

[GavinPearson]

Block always gets hotter than water temperature. If you are running the car hard, expect the ancilliaries and that area to see around 120 celcius.

[steve_d]

GavinPearson said:

Block always gets hotter than water temperature. If you are running the car hard, expect the ancilliaries and that area to see around 120 celcius.

Would expect the side of the block to get hotter from the exhaust manifold than the water inside.

Steve