Engine Painting

[Michael W.]

The amount of heat radiated by the engine

to ambient air, especially on the intake manifold, is minor compared to that rejected by the cooling system. Extra thick paint, for whatever insulating value it has, would simply cause more heat to be transferred into the engine coolant.

An engine may indeed generate additional heat during the breaking period, but this also would be transferred to the coolant and either cause a higher reading on the temp gauge, or cause the thermostat to open more in compensation.

The actual variation in surface temperature on the manifold would probably not change by more than a few degrees if at all.

[Michael W.]

The amount of heat radiated by the engine

to ambient air, especially on the intake manifold, is minor compared to that rejected by the cooling system. Extra thick paint, for whatever insulating value it has, would simply cause more heat to be transferred into the engine coolant.

An engine may indeed generate additional heat during the breaking period, but this also would be transferred to the coolant and either cause a higher reading on the temp gauge, or cause the thermostat to open more in compensation.

The actual variation in surface temperature on the manifold would probably not change by more than a few degrees if at all.

[Ray G.]

Re: Engine Painting

Just enjoy it, spring is coming. If you let this get to you, you will be chaseing your tail. Just touch it up as needed and have a cold beer. It's cheaper and you will feel better.

[Ray G.]

Re: Engine Painting

Just enjoy it, spring is coming. If you let this get to you, you will be chaseing your tail. Just touch it up as needed and have a cold beer. It's cheaper and you will feel better.

[Carl R.]

Re: Engine Painting

...I'm so glad I'm not the only one who has ever pulled an engine just to repaint it...

Seriously, haven't dound a solution to your problem (that we both share). Never had good luck with the "high-heat" spray paints as they always seem to discolor. Bill Herndon's (spelling?) advertises in Hemmings and has the best engine paint I've found yet. Unfortunately one has to paint and if I remember allow 3 weeks (!) to dry completely. I've had excellent results with their "cast iron" high-heat exhaust manifold paint; comes in a tin, brush it on & touch it up later (every few years) as necessary.

Best of luck (and let me know if you find a perfect solution...then the engine'd have to come out again...),

Carl

[Carl R.]

Re: Engine Painting

...I'm so glad I'm not the only one who has ever pulled an engine just to repaint it...

Seriously, haven't dound a solution to your problem (that we both share). Never had good luck with the "high-heat" spray paints as they always seem to discolor. Bill Herndon's (spelling?) advertises in Hemmings and has the best engine paint I've found yet. Unfortunately one has to paint and if I remember allow 3 weeks (!) to dry completely. I've had excellent results with their "cast iron" high-heat exhaust manifold paint; comes in a tin, brush it on & touch it up later (every few years) as necessary.

Best of luck (and let me know if you find a perfect solution...then the engine'd have to come out again...),

Carl