Currently working on special project at a steel foundry which has sister
iron and aluminum foundries. Wood pattern to produce steel casting for
cylinder heads and multiple core boxes for the air intake and water ports
would be ball park pricing of $15K to $20K in U.S. provided someone had a
dimensioned casting drawing before machining.
To reverse engineer it from an existing cylinder head would cost even more.
The mold has to be produced oversized to the actual desired part to allow
for molten steel to shrink in size as it cools.
Plus a lot of additional work to develop a casting that is free of voids or
shrinks in critical areas. The molten steel shrinks as it cools from around
3,000 degrees and sacrificial risers of molten steel are required to feed
additional hot steel in the exactly the right places to avoid a area void of
steel in the wrong area.
You really need a Cad/Cam solid model drawing in Pro-Engineer or similar
software program, that would allow you to model the steel solidification
process and visualize critical shrink and void areas. This helps prevent a
lot of trial and error.
Production volume is required to offset the fairly high start-up costs of
building a casting. Generally tooling for Aluminum and Iron can be more
KO Steel Foundry
San Antonio, TX
>From: "Fred Schroeder" <email@example.com>
>Reply-To: "Fred Schroeder" <firstname.lastname@example.org>
>To: "Gordon Glasgow" <email@example.com>, "Datsun Roadster List"
>Subject: Re: So, ya wanna build an engine?
>Date: Mon, 9 Dec 2002 04:49:13 -0600
>Interesting idea, Gordon, but where are we going to get timing gears? ;^)
>Reg e-mail firstname.lastname@example.org
>Home page http://home.texoma.net/~sitsinwest
>----- Original Message -----
>From: "Gordon Glasgow" <email@example.com>
>To: "Datsun Roadster List" <firstname.lastname@example.org>
>Sent: Sunday, December 08, 2002 10:28 PM
>Subject: RE: So, ya wanna build an engine?
> > Good Lord, what a project! Any moldmakers out there who want to do U20
> > heads?
> > Gordon Glasgow
> > Renton, WA
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