Tig weld power valves with what kind of rod?

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Gilly_mi

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Buds cable pulled through and damaged power valve. Are the guys repairing these tig welding and what type of rod are you using? Thanks
 

They are aluminum. I wouldn't weld them they will just break again and the valve will be more prone to cracking which could make a mess. Also you'll have to machine it anyway. Some guys do them by hand with a die grinder or whatever buuuuuuut that seems Mickey Mouse to me haha...The best way is to machine the nub off the end of the valve where the cable goes. Then drill and tap the valve and put a bolt in it with high heat loctite. Then turn the bolt head down on the lathe to original nub size. You'll need a 4-jaw. Then put it in the drill press or mill and drill the hole for the cable end and cut your slot. Chamfer and de-burr all edges so cable won't chafe and break.
 
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don't bother, make the end steel, drill tap, put a bolt with a head rounded off in it, drill and slot. tigging aluminum back on where aluminum is not a good fix, unless your going to do a brake line insert
 
A few years ago I welded up 6 valves and they really turned out nice...they only lasted maybe 1,000 miles and started pulling through again.
The welded area is just to soft. I agree just the weld is not a good fix. Either weld and pin or do the preferred method and use the bolt. I
ended up pinning mine with a roll pin, they are still working good. The bolt method also keeps the end from smashing down if you get your valves to
tight.
 
I've welded and remachined a number of power valves and never had an issue with them. haven't had to repair any of them yet. I would bet the type of alloy of filler rod being used, helps with the life of the repair.
 
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