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> Factory Underside Corrosion Protection, What did they coat the panels with?
pek771
post Oct 12 2021, 07:49 PM
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I can't determine what treatment was used on a 70 regarding the underside. It looks like the steel was coated with something. Anyone have any ideas?
TIA
Pat
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914werke
post Oct 12 2021, 08:05 PM
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Rust (IMG:style_emoticons/default/av-943.gif)
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bkrantz
post Oct 12 2021, 08:07 PM
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QUOTE(914werke @ Oct 12 2021, 08:05 PM) *

Rust (IMG:style_emoticons/default/av-943.gif)


Don't exaggerate. The factory used a salt water rinse.
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pek771
post Oct 12 2021, 09:05 PM
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Well, there is something in or on the underside panels, ie the floor pans. I scraped all of the old dirt and leaking fuel off...I took some scrapings outside and set them on fire. They burned. Anyway, Remember how the old time pots and pans were coated with something that made them shiny? Same sort of stuff, it seems.
The lack of rust on this tub is astounding.
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r_towle
post Oct 12 2021, 10:06 PM
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Dealer undercoating
They came only pre-rusted from the long boat ride from the factory.
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SKL1
post Oct 12 2021, 10:30 PM
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Come on guys, I thought only Fiat used salt water based paint!!! Ask my college room mate who had a 124 spider!!
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930cabman
post Oct 13 2021, 04:43 AM
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QUOTE(SKL1 @ Oct 12 2021, 10:30 PM) *

Come on guys, I thought only Fiat used salt water based paint!!! Ask my college room mate who had a 124 spider!!


Lets not forget the 850 spider. Many of our 914's were undercoated with a tar like product at the dealers, some probably have Ziebart. From what I understand the only protection from the elements was a heavy coat of paint.
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Superhawk996
post Oct 13 2021, 05:48 AM
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QUOTE(pek771 @ Oct 12 2021, 11:05 PM) *

Remember how the old time pots and pans were coated with something that made them shiny?


You mean seasoned cast iron pans? (IMG:style_emoticons/default/av-943.gif)

Seasoned with lard, baked into the open grain structure of cast iron. Heated until the oils seeps into the metal and burns ever so slightly. Rinse lather repeat until the pores of the metal are filled with burt oil residue and things no longer stick to the cast iron.

Yeah, pretty much same thing used to coat 914 engines (IMG:style_emoticons/default/lol-2.gif)
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Quinn Moore
post Oct 13 2021, 03:31 PM
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QUOTE(pek771 @ Oct 12 2021, 08:49 PM) *

I can't determine what treatment was used on a 70 regarding the underside. It looks like the steel was coated with something. Anyone have any ideas?
TIA
Pat

Tough crowd...I don't know what it originally was (tar, joke) I have some spots in the wheel wells that need touch up. Advice I received was.....get the loose stuff off (moisture gets in between...then rust), and hit it with "Wurth". Rubberized undercoating. There's other brands too. Got some rattle cans from Pelican.

https://www.pelicanparts.com/More_Info/WRTH...3BoCmSgQAvD_BwE

QM
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pek771
post Oct 13 2021, 03:37 PM
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Well, I determined (with the aid of ample drop lights and my glasses) that there is squat for undercoating. Evidently 40 year old fuel and dirt mix together to form some sort of coating like substance. I can remedy that.
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IronHillRestorations
post Oct 13 2021, 03:55 PM
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The chassis were phosphate coated, primed, and painted. That’s it. Dealers and 3rd parties did some undercoating too. There was one contract hauler on the west coast that arbitrarily undercoated every new car they hauled, to pad the bill
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burton73
post Oct 13 2021, 05:05 PM
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Wurth’s RUBBERIZED UNDERCOATING PAINTABLE
The total underside and longs where coated with Tan Worth’s. PMB had a dolly at body shop to get the same amount of overspray the factory had. Not too much color in my case Cannery Yellow on this 1970 914-6 very early car 30th one down the production line. This helps when rocks are thrown up from the road

Bob B
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Jett
post Oct 13 2021, 05:41 PM
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QUOTE(pek771 @ Oct 12 2021, 08:05 PM) *

Well, there is something in or on the underside panels, ie the floor pans. I scraped all of the old dirt and leaking fuel off...I took some scrapings outside and set them on fire. They burned. Anyway, Remember how the old time pots and pans were coated with something that made them shiny? Same sort of stuff, it seems.
The lack of rust on this tub is astounding.

I removed the black undercoating using a combination of heat/scraping and carb cleaner. Worked well (IMG:style_emoticons/default/smile.gif)
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Jett
post Oct 13 2021, 05:41 PM
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QUOTE(burton73 @ Oct 13 2021, 04:05 PM) *

Wurth’s RUBBERIZED UNDERCOATING PAINTABLE
The total underside and longs where coated with Tan Worth’s. PMB had a dolly at body shop to get the same amount of overspray the factory had. Not too much color in my case Cannery Yellow on this 1970 914-6 very early car 30th one down the production line. This helps when rocks are thrown up from the road

Bob B
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Lovely work!!
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raynekat
post Oct 13 2021, 06:22 PM
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Porsche in the early days used a brown waxy product called cosmoline on all the 911's. Not sure about the 914's?
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tazz9924
post Oct 13 2021, 06:58 PM
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salt water
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Maltese Falcon
post Oct 13 2021, 09:48 PM
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QUOTE(raynekat @ Oct 13 2021, 05:22 PM) *

Porsche in the early days used a brown waxy product called cosmoline on all the 911's. Not sure about the 914's?


My 1974 914 came in at the Dealership all oversprayed with that Cosmoline underneath the car. Trans, engine case, axles + c/v's, trailing arms.You could write the mechanic a note on the valve cover with a fingernail (IMG:style_emoticons/default/biggrin.gif)
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Geezer914
post Oct 14 2021, 05:39 AM
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I under coated mine with Herculiner truck bead coating.
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barefoot
post Oct 14 2021, 05:54 AM
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QUOTE(raynekat @ Oct 13 2021, 08:22 PM) *

Porsche in the early days used a brown waxy product called cosmoline on all the 911's. Not sure about the 914's?


My 76 has waxed stuff in the doors, assume it was factory.
Had black undercoating that came off rather easily to expose nice red paint under (IMG:style_emoticons/default/smile.gif)
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Mikey914
post Oct 14 2021, 09:53 AM
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I have a thread showing the factory PVC coating. I was confused when I found it.

http://www.914world.com/bbs2/index.php?sho...vc+undercoating


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