18 replies to this topic

[grumpy xu1]

I have never seen anything that you can spot weld through, & it's not a conductor. Personally i would epoxy the sill inside & out & weld through prime the edge to be welded & then touch up the epoxy after welding. Why are you wanting to seam seal the sill ? Gary.

[madtoranajzedded]

I think i know what you mean.i had this
black stuff under the scuttle panel when i
unpicked it off.when first assembled the
spot process never got as hot joining the
2 panels together.ive been thinking of
using it myself i think it was still tacky
like tar substance..3m have a seam sealer
That can be spot machined through theres a
few vids to watch.sorry cant put em up..
They say its used to for air tight or water
proofing..just had a abit of a google..
checkout lord fusor aswell seems to b a few to choose from.i reckon if your spot holes
were say 5mm it wouldnt hurt the sealer as
much as an 8mm hole if its done qik
enough.so it doesnt damage the sealer around
the spot.just my thoughts...

Edited by madtoranajzedded, 04 March 2017 - 12:47 AM.

[Uncle Chop Chop]

If they were rusted out, that tells me that there was somewhere for water to enter and not to leave. Fix those problems too.

[grumpy xu1]

Right on Vick, i was wondering how long till someone picked up on my question & thought for a bit, it's kinda like putting a plug in the bath & wondering when someone's gonna fill it when you're not looking ! Sure seal the edges, but not the bottom edge, after it's painted you can drown it in cavity wax ect. That is the method i would use myself. Gary.

[madtoranajzedded]

Just do whatever makes you comfortable.
If you want to use it do.i will b in certain
Areas..

Ive even seen a members project using weld
through primer on rails and rusted up
before he even put panel down ..dont know
if the one used was shit or what happened
So maybe the sealer would do better job
than weld through?..maybe the guys could
also comment on what brand wt primer they
used...

Edited by madtoranajzedded, 07 March 2017 - 08:49 PM.

[grumpy xu1]

That's why my suggestion is a good brand of weld through primer & 2 pack epoxy etch primer I'd personally suggest sikkens ep if you asked for my opinion, followed by sikkens color build plus 2 pack high build & 2 pack sikkens or lesonal top coat. 3m make a good filler, Wurth make a good 2 pack bog. All old cars rust not just torana's. I'm only saying not to seal the bottom edge as it's an exit point for any moisture. I would suggest that you fully seal the rear inner wheel arches though yes. Rust can be caused by stone chips, salt air, fertilizers if it was near a farm, Leaves, mud build up, stored outside ect ect. Use good products and follow the instructions & you'll be all good mate. I've seen an eh i worked on 20 years ago lives in a fully sealed garage at the beach, used all these products, still looks like a fresh paint job. It does get treated well & hardly driven but it's a long time, Gary.

[grumpy xu1]

Cover the car in flanelet sheets whilst in primer, all primers are pourus to a certain degree, some more than other's i have found the sikkens the best personally, I've used roberlo & upol weld through primers. The prep work you do before the weld through, can make a huge difference especially if you are spot welding Gary.

[madtoranajzedded]

Anyone use this shit..sorry for thread steal

Steve ☺
 20170308_183025.jpg   642.81K   11 downloads

[tuxedoss]

I've found the Zinc based weld through primers like Wurth are very good as the zinc gives good protection against rust but to weld through them is very difficult with a mig, you get all sorts of minor explosions and not a good plug weld. I've started using the copper based primer from Upol and it welds quite well with no major pops or explosions, I suspect it doesn't quite weather as well as the zinc based stuff but is still a vast improvement from original which was just bare steel

[madtoranajzedded]

Thats interesting Brett ☺

Hey Steve check this out..google

Whats the best way to rust proof overlapped
pieces of steel? .its actually on here
a thread that Woosha started..

I will definately b using sealer

Can someone do linky...

Edited by madtoranajzedded, 09 March 2017 - 04:02 AM.

[grumpy xu1]

Maz, there is a big difference between a seam join & an overlap. I would not overlap anything it's the WRONG thing to do, a seam is the necessary joining of 2 panels ect, spot welding is a practical method for joining them. Like he stated use the copper for a spot weld or plug weld as it's the best conductor. Seam seal everything bar the very bottom edge, ONLY apply the weld through on the area to be spot or plug welded & use a GOOD quality 2 pack epoxy etch primer on the rest, DON'T use cheap shit ! & following the mixing instructions it doesn't get any simpler than that people's. Gary.

[madtoranajzedded]

And you dont think i know that..pmsl

I will b sealing the bottom edge.i dont give
2 frOcks what you say mate..

[grumpy xu1]

Sorry mate, I started out talking to you, but then i generalized it for everyone, i should have stated that but i thought you'd take it as I'd generalized it. My apologies, i thought if i put it all in we wouldn't need to start another thread anywhere even though it always happens !