Re: Larry's 1951 Club Sedan Project
Posted by Larry51 On 2011/6/19 4:08:53
Cleaning and Painting Turret Interior.
This was something I did a while ago, I guess it's worthwhile posting something about it . . . . .
The turret had some minor pitting towards the front and around the edges, which I think was due mainly to condensation. Metal surface under the fibre sound-proofing matting was in perfect condition. (No moisture is going to condense under the mat!). There was some surface rust under the original black sound-deadener coating, but luckily it was not necessary to replace any metal.
The worst place (heavy surface rust) was above the windscreen. Condensation had run forward and sat in the semi-closed section above the screen. Hard to get into that area but I used every shape of home-made tool to scrape and sand away what was there, and after many hours it was 100% clean and rust-free.
Treated it with Deoxidine and then black POR-15 which I had to apply with a 'bent' small brush. Got it right into all the metal joins and had it seeping down between the turret skin and pillars / screen frame, right where water gets.
It was an extremely messy job, grinding away the surface rust, bituminous coating and glue etc off the turret. Even though the car had been grit-blasted the large flat surfaces (bonnet, turret, doors, rear quarter panels) had not been cleaned in that manner, as I was aware of the risk of heat and pressure distortion.
The sound deadener coating was best removed with a fibre clean-up wheel, then many wipes with kerosene got the remainder off. Then I 'polished' the metal with a stripper disc or three.
Appears the 24th Series Packards like mine were not painted on the inside of the turret, just given a thin coating of sound-deadener, with the fibrous matting square placed over bare (untreated) metal. Some surface rust and minor pitting formed under the coating during the many years.
I wanted to make sure there would never be a chance of more rust forming there, so gave the turret two coats of POR15 Grey after neutralizing the surface with Metal Ready. Quite a task, spraying the M-Ready without getting it all over me. Later I'll glue on a square of new (modern) matting, for sound deadening. This will be larger than the original fibrous mat (hemp? - I didn't smoke any of it - honest!). That'll remove the need for me spraying black sound deadener as was done originally.
Some restoreres don't like the idea of POR-15 being used in certain places, but I'll swear by the stuff. It adheres beautifully to bare metal, so no priming and top-coating is needed. Rust cannot form under it and there's no chance of it separating with the extreme heat that will affect the turret. Also a small amount covers a big area . . . and you can brush it on and get a very smooth finish. In terms of time saved not having to prime/ topcoat, it's not expensive. It can be over-coated with virtually any other finish, if necessary.
Later when all final finishes have been applied I intend to give the internal girders and their channels a small squirt of Dynax S50 rust preventative ( Dynax S50 info . . . . ) as I'm convinced there can still be a build-up of condensation, which could run down into the metal seams to some extent.
Very pleased this part of the resto is now completed as it was a messy and awkward job, hard on the arms and shoulders trying to scrape and grind away the old coating and surface rust. Plus I have a sense of relief that there was no major structural rust found.
Stripping the internal surface under way
Worst surface rust was towards the front, above the screen . . .
Black POR-15 seeping thru' staple holes and turret seams
The girders - grey POR-15 used extensively to get right into the areas where condensation lurks
Two coats right across turret interior, including where the new sound-proof matting will go
Check the gloss! Pity it's on the inside
Overall view, with girder areas primed for a later top-coat to finish it off
Masked off and ready to top-coat the girder area
This was something I did a while ago, I guess it's worthwhile posting something about it . . . . .
The turret had some minor pitting towards the front and around the edges, which I think was due mainly to condensation. Metal surface under the fibre sound-proofing matting was in perfect condition. (No moisture is going to condense under the mat!). There was some surface rust under the original black sound-deadener coating, but luckily it was not necessary to replace any metal.
The worst place (heavy surface rust) was above the windscreen. Condensation had run forward and sat in the semi-closed section above the screen. Hard to get into that area but I used every shape of home-made tool to scrape and sand away what was there, and after many hours it was 100% clean and rust-free.
Treated it with Deoxidine and then black POR-15 which I had to apply with a 'bent' small brush. Got it right into all the metal joins and had it seeping down between the turret skin and pillars / screen frame, right where water gets.
It was an extremely messy job, grinding away the surface rust, bituminous coating and glue etc off the turret. Even though the car had been grit-blasted the large flat surfaces (bonnet, turret, doors, rear quarter panels) had not been cleaned in that manner, as I was aware of the risk of heat and pressure distortion.
The sound deadener coating was best removed with a fibre clean-up wheel, then many wipes with kerosene got the remainder off. Then I 'polished' the metal with a stripper disc or three.
Appears the 24th Series Packards like mine were not painted on the inside of the turret, just given a thin coating of sound-deadener, with the fibrous matting square placed over bare (untreated) metal. Some surface rust and minor pitting formed under the coating during the many years.
I wanted to make sure there would never be a chance of more rust forming there, so gave the turret two coats of POR15 Grey after neutralizing the surface with Metal Ready. Quite a task, spraying the M-Ready without getting it all over me. Later I'll glue on a square of new (modern) matting, for sound deadening. This will be larger than the original fibrous mat (hemp? - I didn't smoke any of it - honest!). That'll remove the need for me spraying black sound deadener as was done originally.
Some restoreres don't like the idea of POR-15 being used in certain places, but I'll swear by the stuff. It adheres beautifully to bare metal, so no priming and top-coating is needed. Rust cannot form under it and there's no chance of it separating with the extreme heat that will affect the turret. Also a small amount covers a big area . . . and you can brush it on and get a very smooth finish. In terms of time saved not having to prime/ topcoat, it's not expensive. It can be over-coated with virtually any other finish, if necessary.
Later when all final finishes have been applied I intend to give the internal girders and their channels a small squirt of Dynax S50 rust preventative ( Dynax S50 info . . . . ) as I'm convinced there can still be a build-up of condensation, which could run down into the metal seams to some extent.
Very pleased this part of the resto is now completed as it was a messy and awkward job, hard on the arms and shoulders trying to scrape and grind away the old coating and surface rust. Plus I have a sense of relief that there was no major structural rust found.
Stripping the internal surface under way
Worst surface rust was towards the front, above the screen . . .
Black POR-15 seeping thru' staple holes and turret seams
The girders - grey POR-15 used extensively to get right into the areas where condensation lurks
Two coats right across turret interior, including where the new sound-proof matting will go
Check the gloss! Pity it's on the inside
Overall view, with girder areas primed for a later top-coat to finish it off
Masked off and ready to top-coat the girder area
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