Reply With QuoteYou mean an ECU or 21+
ChatterBox
A project of mine has the potential for having to weld a bracket onto the chassis rear cross member. What specific requirements are going to be required so that I don't kill an ECU or 2?
Chris
You mean an ECU or 21+
But seriously you aren't likely to have an issue if:
Anti-Zap onto battery - disconnect aux if you have them.
Clamp Earth as close as possible to the weld site. Keep current as low as suitable.
ChatterBox
Thanks Tombie. What do you mean by Anti-Zap?Originally Posted by Tombie
Chris
Surge protection
ChatterBox
Could just both batteries be disconnected?
No.. because the ECUs won't be surge protected.
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never having owned one, is the chassis just carbon steel or something fancier?
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Master
I was a boilermaker welder in a previous career.
I wouldn't do it to any vehicle of mine. When you weld you create a heat affected zone alongside the weld in the parent metal. It is the area immediately adjacent the weld penetration. This zone is prone to cracking, exacerbated by the torsional stresses applied to a chassis. That's why they pay engineers the big bickies, working out the shape and placement of welded components so the HAZ does not compromise strength.
Also consider anything other than new material has the potential to be contaminated. You should grind back to bare metal to prepare the weld. This, of course, will remove any form of corrosion protection applied by the factory. It will need to be replaced.
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