Is welding aluminum block possible ?
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Originally Posted by 1INSANEGTO
Just a FYI in order to weld alum the correct way you need a low freq tig welder. You can not just weld it with any tig welder. Yes you can 100% fix your problem but you have the have the right stuff
#24
I’d be tempted to try one of the aluminum brazing products before trying to weld it up. The nice thing there is that you could thread the bolt in, start building up the braze on the outside and in theory should be able to back the bolt out of the hole having a perfect hole with perfect threads when you’re done, and in many cases the aluminum brazing products are stronger then your base metal.
Irrespective of how you fix it, I’d be very impressed if someone manages to do it while in the chassis, I have a hard enough time tigging aluminum when it’s flat on the table in front of me.
Irrespective of how you fix it, I’d be very impressed if someone manages to do it while in the chassis, I have a hard enough time tigging aluminum when it’s flat on the table in front of me.
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Originally Posted by 1INSANEGTO
Just a FYI in order to weld alum the correct way you need a low freq tig welder. You can not just weld it with any tig welder. Yes you can 100% fix your problem but you have the have the right stuff
To the thread starter, I think a good welder can fix it just like new but I pity him if he is going to try to do it with the block in the car. If it were me, I would break it down to the bare block and preheat the whole block to 300-400 degrees or so before welding it to help relieve any internal stresses.
#26
While I agree with you speed…, the claim is that the newer, BIG inverter tigs can do a job like repairing blocks and heads without preheat without causing other problems. I’ll believe it when I see it.
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That's awesome if they can. I always thought the preheat was to keep the temp differentials between the work space and the rest of the work piece closer so there is less stress. Honestly, I'm a self-taught hack so I couldn't vouch one way or the other .
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welding aluminum
JB Weld. I couldn't find anybody to weld a tiller block after I hooked a tree root and jumped it into a tree. Broke the block where the carb and gas tank bolt to. Autozone guy says try JB weld. $4 and its held for 3 years of pounding in my rock strewn Arkansas garden. I even drilled and threaded holes into it for mounting bolts. No problems. Just a last resort idea if you don't want to pull your block out or welding cost too high. Good luck.