Smoothing out cast iron blocks and heads, what do you use to do it? - Team Camaro Tech
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post #1 of 5 (permalink) Old Oct 17th, 09, 10:43 PM Thread Starter
Tim
 
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Smoothing out cast iron blocks and heads, what do you use to do it?

Got a cast block and some heads that I want to smooth out. So far seems like we are going backwards.

What tools, burrs etc do you use?

Pics?

Thanks
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post #2 of 5 (permalink) Old Oct 17th, 09, 11:00 PM
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Re: Smoothing out cast iron blocks and heads, what do you use to do it

I assume it has been dipped and clean?
A very thin spray of etch primer, then I use VHT chevy orange engine enamel , but punture the bottom of the can and MT into a container
Stir it around till the LPG propellent boils off.
Then put into a air brush and slowly build up the layers till the casting roughness is filled.
Let dry, and lightly sand down with 280 wet dry till the casting just sshows thru
Finish with another coat with the air brush.

My Spelling is not incorrect...it is creative

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post #3 of 5 (permalink) Old Oct 18th, 09, 05:14 AM
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Re: Smoothing out cast iron blocks and heads, what do you use to do it

Also can use carbide bits in a die grinder along with lots of sanding rolls and time.

68 Camaro~LSx ~all motor
1.54 60'--6.95 @ 98.45 660'--10.96 @ 121.53
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post #4 of 5 (permalink) Old Oct 18th, 09, 10:19 AM
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Re: Smoothing out cast iron blocks and heads, what do you use to do it

Tim,
First of all, I am assuming you mean actually smoothing the castings. There is no easy way to do it, period. Its just like porting cast iron heads ..... dirty, noisy, and very time consuming. Start out with carbide bits and a die grinder and get all of the real rough areas, then go back with sanding rolls and get it however smooth you want. Just to give you an idea, I would expect to spend an hour at least just cleaning up and smoothing the lifter valley area.

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1971 Chevelle "Heavy Chevy" original owner


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post #5 of 5 (permalink) Old Oct 18th, 09, 10:41 AM Thread Starter
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Re: Smoothing out cast iron blocks and heads, what do you use to do it

Yes, making the block and heads look molded instead of blocky

Tim Baillie
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www.hotrodgaragemagazine.com
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