DIY Rusty Bolt removal -- Induction Heater

Christopher72

Active member
 Ohio
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Just sharing... spent Saturday replacing my OEM struts with Bilstein B6s and new sway bar links and bushes on one of my other vehicles.

If you've done it before, you know that a decent breaker bar and power wrench makes it easier work. The hardest part is removing the sway link on the front struts - its good practice to replace them with the struts to keep them the same age -- while you are down there approach. I did all 4 links and front and rear bushes.. (100k mile service).

Everything else always comes off easy, spinning off the nuts on the sway link requires a locking wrench or 5mm hex on the inside to keep it from spinning. Mine was toast and just spinning. But I remembered that I had picked up an induction heater... which in a senior moment I had forgotten about. About a 45 seconds of heating with the induction coil made the rusted nut cherry red, and they spin off with the power wrench. No flame from a MAP torch, no risk, all reward. You pretty much boil the grease in the sway link bearing, but you were replacing that anyway.

Awesome tool -- mines a 1600W... not brand shilling here, just sharing cool tech.
I don't have pictures under the car, but from a galvanized pipe I tested it on previously..

IMG_20250701_202553.jpg1771284931403.pngIMG_20250701_202542.jpg
 
I have used my stick welder in the past, especially on rusty exhaust bolts.
Sometimes even boiling water from a kettle helps.
Especially alloy wheels stuck on hubs.
 
Interesting that these were difficult to remove for you. I fitted the B12 kit last year at 139k miles and found all the bolts very easy to remove. I guess I must have been very lucky!
 
Interesting that these were difficult to remove for you. I fitted the B12 kit last year at 139k miles and found all the bolts very easy to remove. I guess I must have been very lucky!
My winter vehicle in Ohio - lots of rust underneath. I originally got the induction heater for exhaust work and dealing with a rusted bolt on a rear carrier arm of shewhomustbeobeyed's Honda Odyssey. I received mine for free, so it was an easy decision to acquire. Attempting the sway link without it ruined the teeth of one of my locking pliers...

But in any case.. its a tool with a single really useful application. I'd buy one in a heartbeat now after using it. Makes something that can be impossible, only take minutes. There's always room for MAP torches.. I have one of those too. This is a better tool to prevent unwanted melting or burning.
 
I was talking to one of the engineers about using one to help remove the nuts off the exhaust, he said it was a great idea, but I've just seen the price, gulp. Cost more than all the rest of my tool kit combined.

G-clamp and a socket it is then.
 
I was talking to one of the engineers about using one to help remove the nuts off the exhaust, he said it was a great idea, but I've just seen the price, gulp. Cost more than all the rest of my tool kit combined.

AliExpress (and probably ebay) usually has a selection of more affordable versions. Really ought to get one myself.
 
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