Welding a crank pin

fourbarrel

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May 5, 2003
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Location
St George,New Brunswick,Canada
I'm hopefully getting my crank back from the engine shop tomorrow after getting the bent con rod changed and rather than wait an extra day to have him take the crank to another shop to be TIG welded I had him ship it to me figuring I could get it done here sooner.I'm not exactly sure why the engine shop isn't set up to do the welding but the guy that owns it farms that stuff out .Well after checking with the shop I'm planning on using to do the welding I need to know the material it is made of,as in is it cast steel or forged.If it's cast then I'll need to find a different shop because the guys here aren't set up to weld cast with the TIG.Is it absolutely necessary to use a TIG to do the crank pin or can I have the shop use a stick?I know that too much heat will draw it out of true so I need to make good and sure what the proper method is.The machinist doing the work said to have it TIG welded and like I said before I need to know the material it's made of.
 

Steel is steel cast or forged, are you sure they are not talking cast iron like some car cranks are made of?
 
tig weld it, a stick welder is WAY to dirty and will put splatter and slag all over the place. you just need to tack or stitch the pins about a 1 inch long weld is all.
 


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