Body Guys, anyone ever seen this..

[Hotshot]

My 86 has Zero rust on it. One of the reasons I own it. I’m currently redoing the front end all pretty and I decided to stem clean the inside bits.

Right side A pillar. Inside fender I noticed a hard but pliable lump…

All the others are hard? Any idea? Could my steam cleaner warmed it up? Looks like dragging OG sealer. I know Porsche went nuts in 86 w sealer and corrosion warranty.

I’m gonna poke it when I get home. It’s not like it’s water. More like loose calling that’s not totally dry.

Everything else is hard.

[Antomero]

I hate to inform you but that’s rust. A very common area for rust. Check the other fender as well.

[porschyard]

If you push on it it will probably feel a little crunchy, hope I am wrong but it looks all to Familiar.

Richard

[Hotshot]

Really eh? Well only one way to find out. Not crunchy at all though. Will report back.

[Hotshot]

Nope. Not rust and didn’t expect it which is why it’s so strange. No evidence of damage or repair. Hard shiny steel under this sealant. It’s like small bubbles off gassed fine giving a way to a big bubble. Like a Pizza crust.

Asking a very reputable official Porsche shop, and you folks ideas. It’s all level now. Thinking a sealer and airbrush in some red.

[tdw28210]

Does it feel rubbery at all? Is it shutz?

[Hotshot]

Originally Posted by tdw28210

Does it feel rubbery at all? Is it shutz?

Yes very rubbery. Like bathroom calking. It’s the exact same texture where it’s thin all over the car. Rear, other side. Factory sealer stuff. You know how you can did a finger nail into any under coating on these cars.

[tdw28210]

My guess is the car likely got a paint respray (inclusive of the wheel wells) at some point in its life that included spraying the paint over the "schutz" or "schutzen" (rubberized factory undercoating). The bubbling seems a little odd but if they put new schutz on first and then painted immediately afterwards it might have reacted. I mean it COULD have come from the factory that way but I doubt it.

https://www.3m.com/3M/en_US/p/d/b40071581/

[Hotshot]

Originally Posted by tdw28210

My guess is the car likely got a paint respray (inclusive of the wheel wells) at some point in its life that included spraying the paint over the "schutz" or "schutzen" (rubberized factory undercoating). The bubbling seems a little odd but if they put new schutz on first and then painted immediately afterwards it might have reacted. I mean it COULD have come from the factory that way but I doubt it.

https://www.3m.com/3M/en_US/p/d/b40071581/

100% it was resprayed in the 80s or 90s. Single stage. They did the fenders / bumpers. I measured it with a paint meter. No damage there though. The other side I suspect ran a curb at the wheel. Body is totally straight but other fever was repaired. The job was done right.

I’m a pretty good car detective on this one. Re blasting everything and cerakoting the whole front end and plating, you notice every lil thing.

It’s defiantly that schutzen.

[Dpmulvan]

Porsche didn’t paint the undercoating, and putting new chip guard over old is a waste of time and money because it will never harden. Either strip to bare metal and epoxy or etch primer let it flash then new chip guard or shoot some primer and color over it and hope for the best or leave it alone.

[Antomero]

Originally Posted by Hotshot

100% it was resprayed in the 80s or 90s. Single stage. They did the fenders / bumpers. I measured it with a paint meter. No damage there though. The other side I suspect ran a curb at the wheel. Body is totally straight but other fever was repaired. The job was done right.

I’m a pretty good car detective on this one. Re blasting everything and cerakoting the whole front end and plating, you notice every lil thing.

It’s defiantly that schutzen.

Good thing! I would check both of your inner fenders. I had rust on mine and it wasn’t visible at first. I removed most of the shutz and there it was. This was during my restoration work.

[Hotshot]

Originally Posted by Antomero

Good thing! I would check both of your inner fenders. I had rust on mine and it wasn’t visible at first. I removed most of the shutz and there it was. This was during my restoration work.

Will do. It’s always better to check. Hearing that nice clank of hard metal and seeing shiny was a relief.

[Hotshot]

Well, It looks like my steam cleaning in the thick part raised up some Shuntz.. They did go thick in there in 86-89.........Now to prime, apply more to level it out and spray some Red.. UGh..

[getto822000]

My car had something similar in the front where it was wrecked at some point and repaired. It was rubbery and scraped off easily. It was much less durable than the factory 3.2 Carrera undercoating (PVC?). Scrape it all off and redo it.

[Hotshot]

Originally Posted by Dpmulvan

Porsche didn’t paint the undercoating, and putting new chip guard over old is a waste of time and money because it will never harden. Either strip to bare metal and epoxy or etch primer let it flash then new chip guard or shoot some primer and color over it and hope for the best or leave it alone.

The ladder is plan A. I should have left it alone. Steamer wasn’t the smartest option in there..

Plans to prime it and add more to it and colour.

Every 3.2 I’ve seen has paint colour on the under coating. The wells, in the fenders and the bottom pan semi flash over.

One pic I found on BAT the other is a friends 18k mile car. Same red paint over the coating.

[onboost]

Originally Posted by Dpmulvan

Porsche didn’t paint the undercoating, and putting new chip guard over old is a waste of time and money because it will never harden. Either strip to bare metal and epoxy or etch primer let it flash then new chip guard or shoot some primer and color over it and hope for the best or leave it alone.

Yes, Porsche did paint the undercoating in the wheel wells to a point. They started doing so in 73, some more/better than others.

The rubbery undercoating was sprayed on and even brushed on in some areas.
These cars were far from perfect from the factory!

I Unless its a concours car, I would treat the shiney area, tape-off, prep and epoxy prime your torn area, build-up with some undercoat (Upol or Wurth), let it dry/harden, spot paint and move on and enjoy!