floor repair

Maintenance advice to keep your Spider in shape.
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4uall
Posts: 4145
Joined: Mon Sep 26, 2011 12:09 pm
Your car is a: 1980 Fiat Pininfarina Spider 2000 F.I.
Location: Ottawa, Ontario, Canada

Re: floor repair

Post by 4uall »

looks good, here's what I am using

Image
EZ Cool by itzebtze, on Flickr
Jay

Fiona
1980 FI 2000 Spider
ITZEBTZE

https://goo.gl/photos/eNKaX7hrXhBu9fmp6

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2014 Jeep Wrangler Sport
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AndyS
Posts: 328
Joined: Fri Jun 10, 2011 10:02 am
Your car is a: 1967 Fiat 124 Spider
Location: SF Bay Area

Re: floor repair

Post by AndyS »

idocdan wrote:I'm still wavering between using pop rivets with bent steel to bridge from the sill to the floor, cutting out the rust and treating per POR15 instructions, then fiberglassing over, or welding instead of rivets. maybe a combination? I'm have arc welded once upon a time, but would not attempt this myself in this application, so I would need someone with experience. I have someone taking a look at it tomorrow. Will be interesting to hear what he has to say.

for a larger hole in the sheet metal, you'd be better with some real support put down first, like some sheet metal and pop rivets. you can also apply a high quality epoxy putty (like slow cure JB weld )in between the metal patch and floor as a "epoxy and rivet sandwich" that is a very strong and fairly permanent alternative to welding. I drill the holes in the over sized patch and the floor for the rivets, then run a nice bead of epoxy along the entire outer edge where the holes are, and then put in the pop rivets, squeezing the metal pieces together with the epozy in between before it has hardened.

Por 15 can take the place of fiberglass resin and be used with the fiberglass matte or cloth, but I would only recommend doing that for very small repairs--like on floor boards that have heavy surface rust but only a few small perforations. Not recommended for bridging large holes. Its just not strong enough for that.

Again, I don't like to use regular fiberglass polyester resins for any kind of rust or metal repair. they just don't bond well enough to be anything but a very short term band aid. Take the time to acquire a real epoxy resin like I linked earlier in the thread if you don't want to have to repair this again in a couple of years.
1967 Fiat 124 Spider
1964 Fiat Abarth 850TC conversion
1962 Abarth Allemano 1 liter Coupe
idocdan

Re: floor repair

Post by idocdan »

Funny, since my last post, I found an experienced welder who isn't charging an arm and leg. So now I'm back to having the rust cut out, some steel welded back in, with a little support along the sill area. After that, I'm thinking of spraying with bedliner paint, and thought I would use that Peal and Seal for roof repairs over that. Ordered a seat rail from Wolf in Canada, and waiting for it to arrive before bringing it over to the welder.
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