rust treating inside the doors - The 1947 - Present Chevrolet & GMC Truck Message Board Network

hpcgmc · 03-18-2015, 11:35 PM

I'm getting some welding repair work done on the truck, then hopefully getting the inside of the cab and the engine compartment painted. I'm also replacing the door and window trim, fixing the regulators, etc.

Now seems like the time to deal with the surface rust on the inside of the doors. The exterior door skins have some hard rubber or similar coating on them, but about 1/2 of it has flaked off. Should I try to scrape the rest of this off, or is that protecting from rust already?

I've read about Rust Mort and was thinking of sanding down whatever I could, but leaving the original rubberized coating in place, then spray everything with a heavy coat of Rust Mort and leaving it to dry for a few weeks while the welding repair is done. Then having the paint guys spray paint inside the doors - more for protection then for looks. Then replacing the regulator, window, door latch, window trim, etc.

Is this a solid plan, or am I missing something? The doors are in very good shape with no dents and nothing more than surface rust. I might also have the speaker holes in the doors welded up after I do all this, but before the cab paint.

Any thoughts?

adricar1 · 03-19-2015, 02:42 AM

i on mine treated the rust with metal prep form POR. Then sprayed after the door was painted externally, sprayed the inside of the doors with dinitrol which is similar to wax oil.

**special-K** · 03-19-2015, 08:26 AM

That stuff will fly off with a wire wheel, if your grinder fits in there somehow. It would be best to remove, especially if it is coming loose some. It should be tar based, so it will dissolve with solvents, then scrape off

PanelDeland · 03-19-2015, 10:16 AM

The best rust prevention will be to get the water out of the door or keep it out. If you look at the bottom of the door there are some slotted type drains. Make sure they stay clear so water can drain. Also the seals and fuzzies(fuzzies keep the window against the seal) will help keep water out so you don't have to drain as much. Any protection you give the inside of the door is good.

**D.PASSMORE** · 03-19-2015, 10:41 AM

Umm, Down here - we would pour burnt motor oil in the doors, lasts awhile, no rust.

03-18-2015, 11:35 PM	#1
hpcgmc Registered User Join Date: Oct 2012 Location: Northern Cal Posts: 249	rust treating inside the doors I'm getting some welding repair work done on the truck, then hopefully getting the inside of the cab and the engine compartment painted. I'm also replacing the door and window trim, fixing the regulators, etc. Now seems like the time to deal with the surface rust on the inside of the doors. The exterior door skins have some hard rubber or similar coating on them, but about 1/2 of it has flaked off. Should I try to scrape the rest of this off, or is that protecting from rust already? I've read about Rust Mort and was thinking of sanding down whatever I could, but leaving the original rubberized coating in place, then spray everything with a heavy coat of Rust Mort and leaving it to dry for a few weeks while the welding repair is done. Then having the paint guys spray paint inside the doors - more for protection then for looks. Then replacing the regulator, window, door latch, window trim, etc. Is this a solid plan, or am I missing something? The doors are in very good shape with no dents and nothing more than surface rust. I might also have the speaker holes in the doors welded up after I do all this, but before the cab paint. Any thoughts? __________________ 1967 GMC 1500 SWB. Driving this truck since I was 14.

03-19-2015, 02:42 AM	#2
adricar1 Registered User Join Date: Sep 2013 Location: United kingdom Posts: 127	Re: rust treating inside the doors i on mine treated the rust with metal prep form POR. Then sprayed after the door was painted externally, sprayed the inside of the doors with dinitrol which is similar to wax oil. __________________ GMC K1500 1971 350 cu in th350 4wd Bondo Bob c 10 1971 stepside th 350 c10 1970 350 cu in manual air con stepside.

03-19-2015, 08:26 AM	#3
special-K Special Order Join Date: Nov 2004 Location: Mt Airy, MD Posts: 85,851	Re: rust treating inside the doors That stuff will fly off with a wire wheel, if your grinder fits in there somehow. It would be best to remove, especially if it is coming loose some. It should be tar based, so it will dissolve with solvents, then scrape off __________________ "BUILDING A BETTER WAY TO SERVE THE USA"......67/72......"The New Breed" GMC '67 C1500 Wideside Super Custom SWB: 327/M22/3.42 posi.........."The '67" (project) GMC '72 K2500 Wideside Sierra Custom Camper: 350/TH350/4.10 Power-Lok..."The '72" (rolling) Tim "Don't call me a redneck. I'm a rough cut country gentleman" R.I.P. ~ East Side Low Life ~ El Jay ~ 72BLUZ ~ Fasteddie69 ~ Ron586 ~ 67ChevyRedneck ~ Grumpy Old Man ~

03-19-2015, 10:16 AM	#4
PanelDeland I am a Referee of life. Join Date: Jun 2000 Location: Greensboro N.C. Posts: 13,992	Re: rust treating inside the doors The best rust prevention will be to get the water out of the door or keep it out. If you look at the bottom of the door there are some slotted type drains. Make sure they stay clear so water can drain. Also the seals and fuzzies(fuzzies keep the window against the seal) will help keep water out so you don't have to drain as much. Any protection you give the inside of the door is good. __________________ The 47-present Chevrolet and GMC Truck Message Board Network,it's owners,moderators,members,and associates of any type should not be held responsible for my opinion. You can't fix stupid,not even with duct tape. "My appearance is due to the fact that "GOD" does punish you for having too much fun!" Barrett-Jackson has perfected alchemy,they make rust into gold! "You can lead a horse to water but you can't saddle a duck" "Cleverly disguised as a 'Responsible Adult' "Sometimes your Knight in shining armor is just a retard in tinfoil"

03-19-2015, 10:41 AM	#5
D.PASSMORE One of the First Join Date: Jan 2000 Location: St. Augustine,FL. Posts: 4,059	Re: rust treating inside the doors Umm, Down here - we would pour burnt motor oil in the doors, lasts awhile, no rust. __________________ DAVID PASSMORE ST AUGUSTINE ,FL ZIP 32084 '71 SWB K/10 CUSTOM DELUXE (Chili) '72 BLAZER K/5 Muscle Truck (Mule) '72 LWB K/20 CHEYENNE (Blackie)



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