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1st Generation 1964 1/2 - 1973 - Questions & general discussions that apply to a specific year => 1968 Mustang => Topic started by: bullitt68 on August 21, 2019, 03:56:07 AM

Title: 1968 San Jose GT 390 Fastback Blue Paint under Red Oxide Primer
Post by: bullitt68 on August 21, 2019, 03:56:07 AM
I have decided to strip my car to bare metal by hand and I am coming across more of the blue paint under all of the red oxide primer all over the car. My paint guy thinks it may have been a factory sealer or primer. I am looking to confirm so I can duplicate the original factory process. Is this blue paint a typical factory practice or is there another explanation.

Thanks
Title: Re: 1968 San Jose GT 390 Fastback Blue Paint under Red Oxide Primer
Post by: bullitt68 on August 21, 2019, 04:07:20 AM
More photos showing the blue mystery paint
Title: Re: 1968 San Jose GT 390 Fastback Blue Paint under Red Oxide Primer
Post by: 67gtasanjose on August 21, 2019, 05:53:05 AM
The color looks to be one of the Rainbow of Colors colors (various names given).
What DSO number is on the data plate, is the data plate there or original? Since your signature states Raven Black, can we assume Ford painted it such or is it a repaint?

DSO may reflect perhaps an internal use of sorts that may not have followed typical assembly line practices is why I ask.
Title: Re: 1968 San Jose GT 390 Fastback Blue Primer under Red Oxide Primer
Post by: ruppstang on August 21, 2019, 09:28:38 AM
I see the steering gear hardware with the blue paint on it. That tells me that the blue was not a sealer or primer, that hardware was put on the car long after primer.
Title: Re: 1968 San Jose GT 390 Fastback Blue Paint under Red Oxide Primer
Post by: 67gtasanjose on August 21, 2019, 09:55:39 AM
I see the steering gear hardware with the blue paint on it. That tells me that the blue was not a sealer or primer, that hardware was put on the car long after primer.
Ahhhhhh! I hadn't looked at 2nd set of pictures.
No point in wondering anymore. 50 years is a long time for anything to happen and it seems we visited this topic before (blue primer),  same O.P. here: http://www.concoursmustang.com/forum/index.php?topic=19319.msg122182#msg122182
Title: Re: 1968 San Jose GT 390 Fastback Blue Paint under Red Oxide Primer
Post by: bullitt68 on August 21, 2019, 03:10:36 PM
Ahhhhhh! I hadn't looked at 2nd set of pictures.
No point in wondering anymore. 50 years is a long time for anything to happen and it seems we visited this topic before (blue primer),  same O.P. here: http://www.concoursmustang.com/forum/index.php?topic=19319.msg122182#msg122182

Hi Richard yes I had started another thread previously.  However at that point I had only seen surface evidence of the blue paint, but now the paint seems to be on top of bare metal, which is why I am revisiting the mystery. The only explanation is that the car was previously stripped to bare metal and then fully repainted with red oxide on top. However there does not seem to be any evidence that the car was ever taken apart as all of the parts seem to be original, so it is confusing. It would also seem odd that some of the blue paint seems to be overspray. So perhaps it is actually a different color applied at a different time for some reason. Anyway it is very confusing and it seems to have been applied before some of the sound deadener and under coating. Like I said my painter thinks it was applied at the factory
Title: Re: 1968 San Jose GT 390 Fastback Blue Paint under Red Oxide Primer
Post by: J_Speegle on August 21, 2019, 06:01:58 PM
Hi Richard yes I had started another thread previously.  However at that point I had only seen surface evidence of the blue paint, but now the paint seems to be on top of bare metal, which is why I am revisiting the mystery. The only explanation is that the car was previously stripped to bare metal and then fully repainted with red oxide on top. However there does not seem to be any evidence that the car was ever taken apart as all of the parts seem to be original, so it is confusing.

A few observations. Some of your pictures seem to suggest that the blue paint is over the red oxide primer - Examples picture (reply #1)  # 5 & 6


In the last two of that group (what appears to be the back side of a fender) it would like help if you took some sand paper over the areas where the blue is showing. If the blue increases then that would show us the order of application if it gets smaller and shows another color through it that would help the discussion IMHO.




It would also seem odd that some of the blue paint seems to be overspray. So perhaps it is actually a different color applied at a different time for some reason. Anyway it is very confusing and it seems to have been applied before some of the sound deadener and under coating. Like I said my painter thinks it was applied at the factory

Blue paint only seems odd it we haven't figured out the original order and the fact that you have blue on parts that would not have been installed at the factory suggests allot and are factors IMHO that can't be ignored.

Reply #2 pictures 3-6 (and even back to pictures in the original post) all appear to be consistent with a repaint where the painter or owner came back with black paint to black out the wheel well.

If you have red oxide all over the car  that should also be an indicator of a repaint.  What is under the sound deadener in the front wheel well?

To recap. You have an original (based on an original door tag or a Marti report) black car with evidence of this earlier blue.
Title: Re: 1968 San Jose GT 390 Fastback Blue Paint under Red Oxide Primer
Post by: bullitt68 on August 21, 2019, 10:30:14 PM
Hi Jeff I will sand the inner fenders and get more photos posted so we can see if we can figure out for certain what really happened with this car. So many odd things imo. I cant imagine that this car could have ben painted blue at some point, but some of the paint showing does indicate that could have in fact been the case. In the first post the light blue paint seemed to be a latter application, but now the blue seems to be under the primer which confuses things even more
Title: Re: 1968 San Jose GT 390 Fastback Blue Paint under Red Oxide Primer
Post by: stangfan on August 21, 2019, 10:37:31 PM
What does the door tag indicate for paint colour?  A Marti report would tell the tale.
Title: Re: 1968 San Jose GT 390 Fastback Blue Paint under Red Oxide Primer
Post by: bullitt68 on August 21, 2019, 10:49:36 PM
What does the door tag indicate for paint colour?  A Marti report would tell the tale.

I have the Marti report. Its a factory black car
Title: Re: 1968 San Jose GT 390 Fastback Blue Paint under Red Oxide Primer
Post by: J_Speegle on August 22, 2019, 04:14:29 PM
Hi Jeff I will sand the inner fenders and get more photos posted so we can see if we can figure out for certain what really happened with this car. So many odd things imo. I cant imagine that this car could have ben painted blue at some point, but some of the paint showing does indicate that could have in fact been the case. In the first post the light blue paint seemed to be a latter application, but now the blue seems to be under the primer which confuses things even more

In years past repaints could and sometimes did include a primer sealer before a respray to seal the two paint layers from one another. Another possible clue is that an original 68 San Jose exterior paint application would not have originally been applied over red oxide primer or primer sealer.
Title: Re: 1968 San Jose GT 390 Fastback Blue Paint under Red Oxide Primer
Post by: bullitt68 on August 22, 2019, 04:39:24 PM
In years past repaints could and sometimes did include a primer sealer before a respray to seal the two paint layers from one another. Another possible clue is that an original 68 San Jose exterior paint application would not have originally been applied over red oxide primer or primer sealer.

Ok thanks. So what would have been sprayed before the exterior color. I am just trying to put a plan in place for the repaint. I just assumed that the entire car would have been primed. Not sure if the sheet metal parts were in bare metal or primed before or after assembly. Obviously the bottom of the car received the red oxide. perhaps my car was stripped and painted and I don't actually have an original reference point as I first thought
Title: Re: 1968 San Jose GT 390 Fastback Blue Paint under Red Oxide Primer
Post by: J_Speegle on August 22, 2019, 05:43:36 PM
Ok thanks. So what would have been sprayed before the exterior color.

There was typically a coat of light gray primer surfaces to cover small defects on most exterior body panels between the red oxide base and the exterior layer as shown in some of the original paint pictures posted in other threads.
Title: Re: 1968 San Jose GT 390 Fastback Blue Paint under Red Oxide Primer
Post by: bullitt68 on August 22, 2019, 06:18:13 PM
There was typically a coat of light gray primer surfaces to cover small defects on most exterior body panels between the red oxide base and the exterior layer as shown in some of the original paint pictures posted in other threads.

Great thanks
Title: Re: 1968 San Jose GT 390 Fastback Blue Paint under Red Oxide Primer
Post by: bullitt68 on September 28, 2019, 11:58:37 AM
There was typically a coat of light gray primer surfaces to cover small defects on most exterior body panels between the red oxide base and the exterior layer as shown in some of the original paint pictures posted in other threads.

More blue paint still a mystery. I appears top be under the sound deadener in some places and under the primer in other places. Why it is on some hardware is beyond me. It just seems so odd. It somehow got into some very deep and hidden crevices so effort was made to get there by someone at some point and then more paintbwas applied on top of it
Title: Re: 1968 San Jose GT 390 Fastback Blue Paint under Red Oxide Primer
Post by: 67gtasanjose on September 28, 2019, 01:40:21 PM
More blue paint still a mystery... Why it is on some hardware is beyond me. It just seems so odd. It somehow got into some very deep and hidden crevices so effort was made to get there by someone at some point and then more paintbwas applied on top of it

Have you heard of Earl Sheib?
Drive it through the hose-down booth and squeegie off the glass & chrome...all for only $29.99!
Title: Re: 1968 San Jose GT 390 Fastback Blue Paint under Red Oxide Primer
Post by: bullitt68 on September 28, 2019, 01:46:40 PM
Have you heard of Earl Sheib?
Drive it through the hose-down booth and squeegie off the glass & chrome...all for only $29.99!

Haha! You might be onto something there, but how does that explain the blue under the primer and seam sealer. Who would paint a black car like that Robins egg blue?
Title: Re: 1968 San Jose GT 390 Fastback Blue Paint under Red Oxide Primer
Post by: 67gta289 on September 28, 2019, 03:34:27 PM
Have you heard of Earl Sheib?
Drive it through the hose-down booth and squeegie off the glass & chrome...all for only $29.99!

I think you are understating the price, at least in the mid 80's...

https://www.youtube.com/watch?v=PtjdHaMeiiQ

Title: Re: 1968 San Jose GT 390 Fastback Blue Paint under Red Oxide Primer
Post by: bullitt68 on September 28, 2019, 03:39:15 PM
I think you are understating the price, at least in the mid 80's...

https://www.youtube.com/watch?v=PtjdHaMeiiQ

That is so awesome on one hand and so incredibly wrong on another. Perhaps my car got the treatment at some point. However there was no evidence of it on the any of the outer body panels as the car was stripped to bare metal when it was restored. Too bad they didn't go all the way and media blast the whole car. Now I am doing the work that should have been done in the first place.. Then I m going to take it to Earl Scwabb lol!
Title: Re: 1968 San Jose GT 390 Fastback Blue Paint under Red Oxide Primer
Post by: 67gta289 on September 28, 2019, 06:02:37 PM
My car actually had an Earl Sheib paint job according to the original owner.  They painted right over the white GT paint stripes!
Title: Re: 1968 San Jose GT 390 Fastback Blue Paint under Red Oxide Primer
Post by: J_Speegle on September 28, 2019, 07:20:23 PM
In the "old days" places like Sheib, Macco and Miracle would typically assign a minimum wage kid 15-20 minutes to prep a car (basically try and clean off most of the bugs and run a scratch pad over as much of the surface as he could in that time) before they masked and shot a car.

We had a car painted way back then by one of these - paid extra for a better prep and primer. When the paint peeled we could see no primer underneath the top coat. We were kids so the salesman tried to give us the "clear primer" line   LOL  That didn't go over at all.
Title: Re: 1968 San Jose GT 390 Fastback Blue Paint under Red Oxide Primer
Post by: 67gtasanjose on September 28, 2019, 08:27:30 PM
I think you are understating the price, at least in the mid 80's...

https://www.youtube.com/watch?v=PtjdHaMeiiQ
You are correct, to a degree but when he started out, it was much lower than THAT commercial (stated as 1986).
In the late 70's, we fixed several wrecks and sent them there for a quickie, we prepped them is all. If memory serves, we paid $59.99 for non-metalics and add $10 for their "better" paint.
Title: Re: 1968 San Jose GT 390 Fastback Blue Paint under Red Oxide Primer
Post by: bullitt68 on October 02, 2019, 12:51:54 PM
You are correct, to a degree but when he started out, it was much lower than THAT commercial (stated as 1986).
In the late 70's, we fixed several wrecks and sent them there for a quickie, we prepped them is all. If memory serves, we paid $59.99 for non-metalics and add $10 for their "better" paint.

Wow! Crazy stuff! When I painted my first car back around 1979 I stopped it myself and drove it to my buddies Dad's shop and they sprayed it and I drive it home with lights, bumpers or door handles etc. I paid $400.00 back then and it was Imron Aircraft paint from what I recall. Car was a 1970 and was already rusting pretty bad in the rear wheel wells, North Eastern car. It is crazy how expensive the whole process is now a days. Mind blowing really when you think about it and I am doing as much of the work as I can. I cant even imagine how much it would cost to do my car to this level paying someone else to do all of the work. Clearly it would be much more than the car is worth!
Title: Re: 1968 San Jose GT 390 Fastback Blue Paint under Red Oxide Primer
Post by: bullitt68 on October 23, 2019, 02:03:40 AM
So I just had the car media blasted and they blue color is still showing up all over the car and it under the sound deadener and undercoating. I guess it must be a sealer/primer and it appears to have been applied to all sheet metal. My painter says they he has another Mustang in the shop that has the same blue paint under it.

Title: Re: 1968 San Jose GT 390 Fastback Blue Paint under Red Oxide Primer
Post by: J_Speegle on October 23, 2019, 06:21:11 PM
So I just had the car media blasted and they blue color is still showing up all over the car and it under the sound deadener and undercoating. .........

Looks to me (in the first couple of pictures) that the blue is over the sound deadener since you can see the texture in the blue
If you were to chip off the black sound deadener I doubt there would be blue under those areas given what the pictures show.


(http://www.concoursmustang.com/forum/gallery/12/6-231019172624.jpeg)
Title: Re: 1968 San Jose GT 390 Fastback Blue Paint under Red Oxide Primer
Post by: bullitt68 on October 23, 2019, 06:35:08 PM
Looks to me (in the first couple of pictures) that the blue is over the sound deadener since you can see the texture in the blue
If you were to chip off the black sound deadener I doubt there would be blue under those areas given what the pictures show.


(http://www.concoursmustang.com/forum/gallery/12/6-231019172624.jpeg)

Good point. I will have to have a closer look, but the blue is all over the car and deep down. It's under the car and in crevices and nooks and crannies like under the gas tank edges etc. Sure has been a mystery the whole time. Not that it matters as it will all be gone soon enough, however it would be nice to know once and all conclusively what the deal is with the blue paint everywhere. Someone obviously made a real effort to cover the entire car with it. The only place I have not seen any evidence of it is in the interior. Odd that it was in some areas of the outer engine bay as well...