mackglobal
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Mack global,I didn't see the the original discussion(about liner removal) I'm a certified welder and an an auto mechanic,but not a diesel mechanic.in the old days they used to pack the liner with dry ice(to shrink it) and drive it or jack it up from below. I'm thinking you want a way to weld a bar across the bore of the liner and pull it out from above with a hoist? Of course assuming you are throwing it away! If so and the liner is hardened steel(as most are,a good welding electrode would be 7018,low hydrogen 1/8 rod at around 120/ 125 amps dc electrode positive. If the liner is stainless steel you could use 308/16 stainless rod or nickel rod trade name "ni rod" electrode positive(i think) the box will tell you the preferred polarity and amperage. It has been 40 years since I've used nickel or stainless rod, my memory is a little fuzzy! I'm assuming you are using a "stick welder" if you're using mig process you will have to ask your supplier for the proper wire roll for the metal you are welding. Hope that helps!
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Mack global,I just saw you're other post concerning "stick welding" .There are numerous videos. On u tube showing how to stick weld.if you are working in a remote area without electricity you will need to get a petrol or diesel powered generator/welder.They all function as both a welder and a generator. Some will do both at the same time (like when you need lights,or a grinder or drill).I would suggest that you practice on some pieces of scrap iron before you weld on the liner.
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