[Prowbar]

I mentioned before that the crankshaft rear main seal area had pitting and needed to be welded up. I had a company lined up that would do it for me. Even did the prep work that they requested - then the company didn't want to do it.



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Fine, I'll do it myself. Getting sick of these companies not living up to their word. I try to learn and do everything myself, and for good reason. No BS, fast turn around, a learning experience and all that for a fraction of the cost

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Because of the flywheel flange I cannot use a Speedi sleeve or repair sleeve out of 1 piece - impossible to install. The sleeve needs to be split.

Took a scrap piece of honed cylinder material that we use at work. Its made out of 304 stainless. Made a repair sleeve out of it.



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I undercut the area for the sleeve in the crankshaft. Its about 9/16" wide. I made radiused relief cuts at the ends to prevent stress risers.

Lifting that massive crankshaft in the lathe is a 2 man job - its a beast of a crank for sure.



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I split the sleeve and degreased crankshaft and sleeve halves. Loctite 648 was applied to the sleeves, but kept away from the split line. The sleeves were then installed on the crankshaft and clamped in place.



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Using TIG welding, I tacked and welded the sleeves together. Contraction from the welding pulls the sleeves tightly together, resulting in a very strong mechanical bond to the crankshaft in combination with the Loctite. Made sure I got good penetration as there quite a bit of material to be machined away. I ended up with about .0043" wall thickness.



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The crankshaft was then reindicated in the lathe and turned down to the original diameter and polished. Didn't run into any inclusions or problems with the sleeve moving or coming loose - all looks well.



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I'm very satisfied with the result, I didn't expect it to work this well. In combination with the NOS rubber lip seal this should be more than fine.
By the way, the bearing journal is dirty with dust and WD40. It looks fine when its all clean.

Only have got a few jobs left before the engine can be put together. More to follow soon.

Hope you guys enjoy.