Stitch welding seams on a ta22 - worth it?

[mullett]

....no....

[thechuckster]

if you were using a TiG, Wouldn't the welds be more flexible anyways?

there are multiple things wrong with this question.

[JadeEstevez]

I don't mean you can bend it 90 degrees and it won't effect it XD I mean TiG welds are more flexible then MiG, Hence less likely to crack... Thats what my lecturer told me, Should have explained that, sorry =P

[thechuckster]

TIG will pump more heat into the spot, you need a really clean surface around the weld, you don't want epic flexibility in the area of the weld anyway, the boundaries between weld-pool, heated metal and existing metal will be fracture zones, cost, suitable filler rods, ... Get Mig, wire-brush weld spots, spray weld-thru primer, stitch as required, fill-in unused holes, repair rust holes, re-brush weld spots, spray with primer, done.

fwiw, I'm only doing some basic stitch welding on my rally car - I'd rather have things bend a bit rather than smash suspension pickup points. firewall-to-guards, firewall to chassis rail (some), strut towers (sides & tops), tops for rear coils & rear shocks, front guards to chassis rail (some). Towers will link to firewall and front cage legs so upwards/backwards bending moments at the front get transferred to the cage. I'm also tagging the windscreen pillars and roof to the cage and making sure the glass is no longer a stressed member. LCA will get some extra gussets. Otherwise it's a focus on removal of stuff. Less weight is always a good thing.