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cylinder head-paint or not


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#1 lrhredjb OFFLINE  

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Posted June 24, 2015 - 09:08 PM

I'm of the opinion that cylinder heads will run cooler without paint than with. All air cooled motorcycles with alloy heads are unpainted, Water cooled alloy heads can be painted and cast iron heads should be painted. I plan to bead blast my Kohler head to remove the paint next time I do a head gasket job.

What's your thoughts about this?


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#2 Bruce Dorsi OFFLINE  

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Posted June 24, 2015 - 09:55 PM

Your tractor, your choice!

 

Many engines came from the factories with cylinder heads fully, or partially, painted.

 

The paint possibly helps prevent corrosion of the aluminum head. 


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#3 lrhredjb OFFLINE  

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Posted June 24, 2015 - 10:25 PM

Your tractor, your choice!

 

Many engines came from the factories with cylinder heads fully, or partially, painted.

 

The paint possibly helps prevent corrosion of the aluminum head. 

That's because they have to paint the cast iron to prevent rust and it's easier to just paint everything. Mine tractor even had the rubber fuel line painted.


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#4 glgrumpy ONLINE  

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Posted June 24, 2015 - 11:01 PM

Many don't have heads or the cylinder fins painted because the tins are on there and paint don't reach. I do the tins over and usually leave the fins bare or rusted as they may be. Keep in mind paint is just for looking pretty long enough to get it sold and look new for awhile.  Even big tractors and GT's never used to get parts painted, mostly near final assemblys and sprayed, many items getting painted that didn't really need it.


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#5 HANKG ONLINE  

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Posted June 25, 2015 - 07:22 AM

I personally like them not painted, if bead blasting the head the contrast of shinny new metal looks great against the painted tins and block
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#6 Coventry Plumber OFFLINE  

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Posted June 25, 2015 - 07:38 AM

I agree with HankG totally . Unpainted

#7 crittersf1 OFFLINE  

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Posted June 25, 2015 - 07:44 AM

No paint.



#8 superaben OFFLINE  

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Posted June 25, 2015 - 08:39 AM

To me, it depends on the engine.  I'm inclined to leave a Kohler aluminum heads unpainted since it is prone to running hot, and then paint the rest.  I usually leave aluminum heads unpainted and paint all cast iron heads.  Briggs, Clinton, Wisconsin, and on with cast iron heads have always been painted. 

 

Ben W. 



#9 larrybl OFFLINE  

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Posted June 25, 2015 - 10:52 AM

I paint mine, 14hp Kohler, 18hp Briggs X-2, 20 hp Onan. Not had an issue.






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