years and years ago, there used to be a place in Chapin, Ill. that did tons of CI weld repairs. Owner was Loyd C. Hurst, as I recall. put stuff in fire brick, heated with propane, then oxy/aced welded with cast iron rod, letting all slowly cool down. He did several heads for me on my race cars (ported into jacket)...worked fine... Located out in "farm" country, doing lots of combine/tractor repairs..high buck parts to replace...
Went looking on web when I saw your post, seems Loyd has passed...son started a 2nd shop, mostly cyl. heads. Links below/addresses are results of my search...suggest you try both, and ask...
http://www.chapincylinderhead.com/ https://talk.newagtalk.com/forums/thread-view.asp?tid=597611&DisplayType=flat&setCookie=1Chapin Machine & Welding Co
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Welder in Chapin, Illinois
Address: Chapin, IL 62628
Phone: (217) 472-3151
Chapin Machine Shop and Welding Company
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5.0
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Machine shop in Morgan County, Illinois
Address: 782 Cylinder Head Rd, Chapin, IL 62628
Hours:
Open 24 hours
Phone: (217) 883-2334
Sort of think the site with welding in name would be the place to start/ one that lacks a web site / older place. ...Loyd was located on north side of hard road...farm house with out buildings...don't know about the newer place/location...
Wish you good luck with repairs...or finding another...
Bob L.