Just a quick "B body" question....

[eldubb440]

whatever they did, it didn't work very well

 

[Mopars & Missiles]

My guess is that Chrysler may have switched to a different product,that was cheaper and didn't hold up as well as what they used on the pre 66 models. That would explain why Moparmarks sees a difference when separating the newer parts from the earlier pieces.

Very possible, although the factory verbage on the dipping process doesn't indicate that over the years. It is consistently called a 7-step process with a phosphate dip and epoxy primer. I even checked '63 & '64 model years, still referred to as a 7-step process but not a lot of specifics as to what was used in the 7 tanks in all years.

 

[chargervert]

whatever they did, it didn't work very well

They were designed to have a 10 year life span. The rust protection barely made that. I believe that it was around 1980,when I first saw rust in the lower rear quarters on my mom's 70 Charger R / T SE. It was up here in the rust belt,and they only washed it a couple times a year. I never saw them wash the underside of the car.

 

[eldubb440]

They were designed to have a 10 year life span. The rust protection barely made that. I believe that it was around 1980,when I first saw rust in the lower rear quarters on my mom's 70 Charger R / T SE. It was up here in the rust belt,and they only washed it a couple times a year. I never saw them wash the underside of the car.

I agree..... although any AMC I've had were very solid in comparison....... hell, the AMX I currently have was without a rear glass for who knows how long with a wet, rotted carpet; it's solid as balls

 

[chargervert]

IIRC,American Motors used galvanized steel on their bodies. My 69 AMX is very solid too. It just needs lower quarters. Even those troughs under the front fenders are nice

 

[Richard Cranium]

Whatever they dipped the cars in sure didn't prevent rust. In fact, the way these things rusted out, I would argue that the dippung process promoted rust.

 

[eldubb440]

Whatever they dipped the cars in sure didn't prevent rust. In fact, the way these things rusted out, I would argue that the dippung process promoted rust.

planned obsolescence

 

[cudabee]

Many Thanks to all men that commented. Answered my question and more, very interesting. The Bee I'm working on right now has definite "dip lines" on the firewall and the braces in the back, plus the thick (rusty) residue in the floorpans, but the insides of the frame rails appear to be clean.

 

[Kern Dog]

MoparMarks disappeared as if he owed me money.

 

[moparmarks]

I'll be back. Been out of town and really busy. I'm going down to the yard to get some pictures to show where I'm coming from.
Also I just sold my house and shop and at the end of next month I will be completely debt free.

 

[Kern Dog]

That should feel pretty good.

 

[moparmarks]

That should feel pretty good.

Oh man it does.

 

[moparmarks]

Ok here is where I'm coming from.
Here is a 65 frame. Can clearly see that is has been coated
Then here is a 66 frame. Bare metal.
I have found this to be common at least with the cars I've cut.

 

[moparmarks]

Here was my layout at Carlisle so you can see that it wasn't just a car or two. If dipping still happen after 65 what did they use? Water colors? Maybe I'm wrong and dipping still happened but it didn't seem to be worth the process. I rarely sell 62-65 frames but sell out of the 66-74 ones.

 

[Photon440]

If dipping still happen after 65 what did they use? Water colors?

Probably exactly that. The article describing the dipping process said that the exterior of the cars were rinsed off with a water hose to avoid the dipping lines, before being dried for the next step.

 

[oldbee]

I agree..... although any AMC I've had were very solid in comparison....... hell, the AMX I currently have was without a rear glass for who knows how long with a wet, rotted carpet; it's solid as balls

View attachment 643136 View attachment 643137

Have an uncle that worked at a Rambler dealer during his high school years. He always said the metal was at least 1gauge thicker than other American cars.

 

[eldubb440]

Have an uncle that worked at a Rambler dealer during his high school years. He always said the metal was at least 1gauge thicker than other American cars.

also, notice the abundance of red paint on the floors

 

[The Rebel]

Perhaps a water based dip, LOL!

Whatever they dipped the cars in sure didn't prevent rust. In fact, the way these things rusted out, I would argue that the dippung process promoted rust.

 

[Officer Higgins]

https://www.hamtramck-historical.com/dealerships/1973ChryslerDealershipDataBook-01.shtml

 

[moparnation74]

It was a WASH PRIMER......The intention was rust prevention and an etching process.....Post dip they "washed" the dip primer off the exterior metal and baked the car....No it didn't work well for long term but for the average turnaround time back then it was decent.....

Waterborne paints have been around a lot longer than most even know........

Back in 66-68 my pops moonlighted at the St Louis Assembly plant....In 67 he bought a GTX and walked the car from the metal shop to the exit. On it's journey he hand picked the majority of parts......He said the most interesting part of the whole process was the dipping process......His exact words were, "nothing cooler than seen a complete body get dunked."

Not every plant did the exact same thing nor used the same vendors but one thing for an absolute was the dipping process across the board........