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Allis Chalmers Discussion Forum
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Welding WD45 Block

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Harlen Larson

09-24-2007 17:40:28




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This is cast iron not cast steel right? What Would you guys recommend? Nickel rod? Has anyone had good luck with anything else?




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Harlen Larson

09-25-2007 15:27:41




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 Re: Welding WD45 Block in reply to Harlen Larson, 09-24-2007 17:40:28  
Its a crack from freezing on the left side of the block and it is big. Its almost in a oval shape about 4"x8" not about 3" from being broken out on the top. It has been welded by somebody at some point and is seeping from the weld. I ground it down last night and found it is cracked right along the weld. I have a picture on my computer I could email but I have never experimented with posting pics on here.

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ohio

09-25-2007 13:29:06




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 Re: Welding WD45 Block in reply to Harlen Larson, 09-24-2007 17:40:28  
are you repairing a window in the block? a crack because of freezing? if it's the cracks between the cylinders, don't bother. ni99 works, for higher strength, many stainless rods are available, eureka exp10 will work too. block must be evenly pre heated to about 450 degrees, and evenly post heated. the weld must be thoroughly peened during the process, and SHORT stringer beads.



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Ry

09-24-2007 19:53:58




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 Re: Welding WD45 Block in reply to Harlen Larson, 09-24-2007 17:40:28  
Cast Iron is Iron not steel. As far as welding the block - it all depends where the break is.
Nickel rod may work on a spot close to a corner like a mounting ear or belhousing area. Breaks in the middle of the casting would require slowly preheating the whole casting to just under weld temp. and best results with cast iron rod with oxy-acetelyne torch. Then let it cool real slow. Or consider lower temp brazing - much less risky. I have also had real good luck with the old time method of cast iron pinning- using tapered threaded pins interlaced along the crack. Works real good in water jackets and block sides in many cases. But won't work if a piece is broke off completely. Hope that helps

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old

09-24-2007 19:14:11




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 Re: Welding WD45 Block in reply to Harlen Larson, 09-24-2007 17:40:28  
Need to tell us a lot more on that one. Welding things like that can be done but with out a lot more info we have no clue as to if it can be done or if it can't be done



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