advice please \ old to new undercoating

[fuzze]

Evening , the scraping has started big time , heat gun, scrapers and solvents and I'm making headway ,however once I have the majority of the heavy tar coating off I'm left with the factory undercoat , the light brown colored thin stuff . My question is, the undercoating is still adhered very well to the inner fender wells and my intention is to recoat the wells after all the scraping is complete . I want to seal first with something like por-15 or the Eastwood equivalent , then re-do with a gravel guard or bed liner type of protection . I did a search on this and came up with some answers , but I'm looking for more input so i can be on the right track . Btw , it looks to me like the inners are in awesome shape considering this is a 71-Z , wouldn't you agree .

Thanxz as always

Chris

[EScanlon]

That part of the car isn't normally a problem.

The problems there are either the lip of the fender, or the portion of the well that is directly behind the "dogleg" behind the door. That's the rearmost portion of the rocker panel and a known trouble spot. Check that carefully.

2¢

E

[fuzze]

Lip of fender looks to be in great shape , the dog leg portion has had previous repair and from all appearances they did a good job there . what I'm looking most for is can I seal right over the solid under coat with a paint type sealer of some sort ?

thanxz

chris

[xray]

What was the original color of the car?

This is a good use for POR-15/Rust Bullet/Eastwood type products. I did similar to what you did, then after cleaning/degreasing soaked it in phosphoric acid to etch the metal. After coating with POR-15 I put a coat of primer on it, then Rhino Liner. After that hardened I had it painted while at the body shop. Looks pretty good and should hold up well to road grit.

Here's a link to what I did:

http://picasaweb.google.com/srcartermd/UndercarriageBodyRestoration

Good luck,

Steve

[fuzze]

Excellent reference pic's Steve , Did you completely remove by hand all the undercoating and did the acetone dissolve the remaining film or was it all armstrong work to remove .

I like your resto pic's , I refer to them quite often . Unlike your resto , mine is being done in small bite's as time is at a premium for our family , off to the dojo for Judo classes in the next 5 min's so will check when we get back .

thnxz for the input guys

Chris

[xray]

Acetone, a rag and a big fan were my friends for a couple days while I cleaned off the rest of the undercoating after I was done scraping. Its much easier than the scraping was, and goes fairly quickly (20 min a side or less, IIRC)

Steve

[fuzze]

Good advice Steve , I happened across another method that completely took me to bare metal in minutes . My angle grinder with a super coarse prep wheel was the ticket , then a bit of acetone to finish , no scraping at all was needed . Advice needed though , I'm following directions and have searched the P-15 site , What I need to know from you all is how soon should I top coat my second coat of P-15 with the chassis coat black that I will be applying . My shop is heated to 70 d , paints are same temp and I'm brushing as this is a inner fender well application ? Thanxz for everyones continued support in this great site .

Chris

[xray]

Hi Chris,

I waited for the POR-15 to dry, then scuffed it lightly with 320grit sandpaper. After a coat of self-etching primer, I waited for it to dry then applied the Chassis Coat.

http://www.por15.com/Data%20Sheets/chassiscoat%20directions.pdf

Good luck,

Steve

[fuzze]

Thanxz Steve , My second coat went on late this afternoon and I want to do a coat of CC in the morning tomorrow ,I believe this should be about the right time frame . It's like eating a giant elephant , one little bite at a time , as my pop used to tell me !

Chris