Hardblocking/Head June 09, 2009 02:12PM
What is the best material to use when hard blocking a head? Any help will be greatly appreciated!.
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Re: Hardblocking/Head June 10, 2009 12:25AM
Aluminum.
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Re: Hardblocking/Head June 10, 2009 05:55PM
Can one really pour aluminium in a cast iron head and get it to fill completely? And to stay tight in there... doesn`t it schrink when it cools down?
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Re: Hardblocking/Head June 12, 2009 01:50AM
You have to heat the cast iron up to 400+ degrees then pour it in and let it cool together, I know several people who have done this. It works good b/c you can machine into it and it does not damage the tools like HB or somthing would
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Re: Hardblocking/Head June 12, 2009 03:09AM
I am wondering that if you machine into the aluminum on the exhaust port, will the aluminum hold up to the exhaust temperature? I know that heads are made of aluminum for the Duramaxs but they have water in them to cool the aluminum. I always thought about filling a head with aluminum but was worried that it would melt in the exhaust port.
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Re: Hardblocking/Head June 12, 2009 07:34AM
I should clarify that the tractors that I know this is done to are not diesels, does not mean it won't work I just don't know of any.
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Re: Hardblocking/Head June 12, 2009 04:33PM
back in the 80's we just used plain old plaster of paris.it was about all we could afford.cheap,but it worked
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Re: Hardblocking/Head June 10, 2009 12:36AM
Embeco 885

[www.chasephipps.com]
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