ConcoursMustang Forums

1st Generation 1964 1/2 - 1973 - Questions & general discussions that apply to a specific year => 1969 Mustang => Topic started by: ruger on July 28, 2017, 10:41:38 AM

Title: Batch/Slop vs undercarriage color - 69 Dearborn
Post by: ruger on July 28, 2017, 10:41:38 AM
Just for clarification.   The undercarriage of my 69 Dearborn appears to be a dark green metallic. The inner fender wells and the firewall on mine were the gray color. I would be correct in returning the exact colors to this car,  correct?  I was under the impression after reading a few threads that the slop gray would carry throughout the undercarriage as well.  This is my first rodeo in the concours field.  Just wanna be correct.  Thanks. 
Title: Re: Slop gray vs undercarriage color
Post by: Bob Gaines on July 28, 2017, 04:20:37 PM
Just for clarification.   The undercarriage of my 69 Dearborn appears to be a dark green metallic. The inner fender wells and the firewall on mine were the gray color. I would be correct in returning the exact colors to this car,  correct?  I was under the impression after reading a few threads that the slop gray would carry throughout the undercarriage as well.  This is my first rodeo in the concours field.  Just wanna be correct.  Thanks.
Fire wall and engine compartment or typically painted semi gloss black. Firewall back underneath is typically is the slop paint (Dearborn) which although typically has gray in it could have a mixture of green metallic also.
Title: Re: Slop gray vs undercarriage color
Post by: ruger on July 28, 2017, 04:35:27 PM
Thanks Bob,  the car is Silver Jade.  The green underneath is a bit darker than that. Thought I should have mentioned that in the first post.  Could have been Silver Jade with some darker paint mixed in.  Thanks again. 
Title: Re: Slop gray vs undercarriage color - 69 Dearborn
Post by: J_Speegle on July 28, 2017, 05:57:54 PM
As mentioned in other treads. The floor (from approx the firewall rearward) reward by jets mounted below the moving body with what we refer to as slop gray to just before the rear cross member. There are some identifiable periods in 69 Dearborn where a red oxide epoxy primer was used instead of the slop for some unknown reason

Then from the firewall forward normally a red oxide epoxy primer was applied to the wheel side of the wheel wells and to some of the engine compartment are panels in the area.  Again there are some exceptions during short periods of time were a version of slop was applied to the front wheel wells instead of the red oxide but these are very limited and not IMHO typical

The the engine compartment was painted black  on the inner surfaces, firewall below the cowl pinch weld down ward (and above after a specific time period) This was after after exterior panels were primed with a light gray primer surfacer then exterior body color. The front of the radiator support was painted when they painted the engine compartment and often this black carried around (on both sides) to the forward inner fender panel

Emailed you a couple of files. Let me know if you don't get them
Title: Re: Slop gray vs undercarriage color - 69 Dearborn
Post by: VikingNJ on August 03, 2017, 04:23:53 PM
My Candy Apple Red GT350 FB built around June 12, 1969 had red-oxide primer. Could it be possible that exterior color played a part in determining primer? Just curious.
Title: Re: Slop gray vs undercarriage color - 69 Dearborn
Post by: J_Speegle on August 03, 2017, 04:58:07 PM
My Candy Apple Red GT350 FB built around June 12, 1969 had red-oxide primer. Could it be possible that exterior color played a part in determining primer? Just curious.

Guess by stating "around June 12..." you don't have the exact date from a Marti report.

Now just want to be sure that your not looking at the front wheel wells, front frame rails, base of the firewall and those forward surfaces.

Not from our understanding or examples. There would have been no reason for having on hand multiple undercarriage and firewall forward undercarriage colors since there was no concerns about how things looked in hidden, from normal view, areas. That is why bare steel was not coated, runs in paint and bare (unpainted) metal areas were uncoated in these areas

The findings more align with time periods and in turn supply at individual plants at this time
Title: Re: Slop gray vs undercarriage color - 69 Dearborn
Post by: Bob Gaines on August 03, 2017, 07:32:11 PM
My Candy Apple Red GT350 FB built around June 12, 1969 had red-oxide primer. Could it be possible that exterior color played a part in determining primer? Just curious.
Red oxide definitely out of the ordinary for that time period. Hopefully Jeff has some examples cataloged for that time period to corroborate what you are seeing. I am skeptical that what you are seeing is factory red oxide primer on the floorpans void of no slop paint for that time period.  I have seen a redish shade of slop paint before however.
Title: Re: Slop gray vs undercarriage color - 69 Dearborn
Post by: VikingNJ on August 07, 2017, 05:11:03 PM
Yes, I do have the marti and lois eminger documentation. its been a long time since I have looked at it. its around june 12, 1969 is close enough for this topic. When I got my car years ago I documented all things. That was one of the things I remember clearly was the red-oxide primer with candy apple red over spray...and undercoating/sound deadener in areas as well.
Title: Re: Slop gray vs undercarriage color - 69 Dearborn
Post by: J_Speegle on August 07, 2017, 07:35:36 PM
Can we assume Dearborn also?

That was what he posted in the first post ;)
Title: Re: Batch/Slop vs undercarriage color - 69 Dearborn
Post by: J_Speegle on August 07, 2017, 08:44:28 PM
Red oxide definitely out of the ordinary for that time period. Hopefully Jeff has some examples cataloged for that time period to corroborate what you are seeing.

Sorry looked at my files and notes and can't place another (than your report) in that time period.  Doesn't sound like you took pictures to document what you found unfortunately

Now at the same time I do have an owner that reported red oxide was


As Bob mentioned there is possibly a chance that what you saw was a batch color that for some reason was more reddish and that was what was used

Here is an example of such a finish Unfortunately the poster did not provide anymore information that the year, model and plant :()

(http://www.concoursmustang.com/forum/gallery/7/6-070817170739-7846809.jpeg)




For comparison here is a red oxide 69 Dearborn example

(http://www.concoursmustang.com/forum/gallery/7/6-070817194154-78472494.jpeg)

Title: Re: Slop gray vs undercarriage color - 69 Dearborn
Post by: Coralsnake on August 08, 2017, 09:45:40 AM
Your car should always be the guide. Dont ever doing something during the restoration because a judge told you to. I have judged and shown cars for 30 years, good research always trumps a judge.
Title: Re: Slop gray vs undercarriage color - 69 Dearborn
Post by: VikingNJ on August 08, 2017, 01:44:51 PM
Jeff,
Thanks for the posting with the redish-grayish and red-oxide undercarriage color photos. My car was definitely closer to the red-oxide primer color, as in area of undercoating flaked off you can see fresher color of red-oxide primer. Over the years the red-oxide faded i assume.
Again thanks,
Nils
Title: Re: Slop gray vs undercarriage color - 69 Dearborn
Post by: MikeG69 on August 23, 2017, 03:50:01 PM

The the engine compartment was painted black  on the inner surfaces, firewall below the cowl pinch weld down ward (and above after a specific time period)

My 69 Coupe according to the Marti report was built 11/26/68 & the cowl above the pinch weld is body color, meadowlark yellow.
Title: Re: Slop gray vs undercarriage color - 69 Dearborn
Post by: J_Speegle on August 23, 2017, 04:37:23 PM
My 69 Coupe according to the Marti report was built 11/26/68 & the cowl above the pinch weld is body color, meadowlark yellow.

Is this for the 69 NJ car in your signature?  Yes that is what would be expected but the discussion is about 69 Dearborn cars  ;)
Title: Re: Slop gray vs undercarriage color - 69 Dearborn
Post by: cobrajet_carl on September 28, 2017, 04:10:10 PM
In general when the black paint was applied to the engine compartment and radiator support, etc. , how was the already painted body protected from overspray?
Title: Re: Slop gray vs undercarriage color - 69 Dearborn
Post by: J_Speegle on September 29, 2017, 12:06:28 AM
In general when the black paint was applied to the engine compartment and radiator support, etc. , how was the already painted body protected from overspray?

Have no idea. Have not been able to find one of the original painters and can't find any evidence of taping, masking or anything that would indicate what was used or how it was done.  Would believe that size of tip and lower pressure was different (less)  than what was used on the exterior and trunk areas. Like the pinch weld black out producing less overspray but that can't be the whole answer
Title: Re: Slop gray vs undercarriage color - 69 Dearborn
Post by: Wingman on January 13, 2020, 05:20:59 AM
Hey guys!

New to the forum and in the process of restoring a 69 Mach 1, R-code.
Car is a Dearborn built car on 14th of March.

This is what mine looked like underneath. Would you say it’s oxide red? (Body color is Candy Apple Red).
Title: Re: Batch/Slop gray vs undercarriage color - 69 Dearborn
Post by: J_Speegle on January 13, 2020, 03:18:29 PM
This is what mine looked like underneath. Would you say it’s oxide red? (Body color is Candy Apple Red).

Need to look further inboard near the center of the car. The areas your showed face outward and likely have allot or some exterior paint on them - can reach a long ways. Find three spots at least. One maybe in the driveline tunnel, once over the rear end  and one under the rear seat platform. Remove the sound deadener if there, all the grime and take a little light polishing compound, to remove any over spray and compare those.

And welcome to the site :)
Title: Re: Batch/Slop vs undercarriage color - 69 Dearborn
Post by: Wingman on January 13, 2020, 03:50:25 PM
I checked the drive line tunnel and scarped the sound deadener off, did show any particular color, would probably say it looked like a greyish tone. Could it be that my car was painted slop grey?
Attached a picture of the inner side.

Also attached a picture of the right outer wheel well. Looks like pure metal, oxide and then body color.
Title: Re: Batch/Slop gray vs undercarriage color - 69 Dearborn
Post by: J_Speegle on January 13, 2020, 04:58:49 PM
I checked the drive line tunnel and scarped the sound deadener off, did show any particular color, would probably say it looked like a greyish tone. Could it be that my car was painted slop grey?
Attached a picture of the inner side.

Yes it appears to be one of the versions of batch grey as we would expect for a car built at Dearborn during the same time period


Also attached a picture of the right outer wheel well. Looks like pure metal, oxide and then body color.

Yes for that area that is what we would expect to see. Just the painter carrying the body color into what would become the front wheel well opening. How far forward would depend on what that painter did that day, on that car and on that side of the car. Other side could be the same or fade away at a different point
Title: Re: Batch/Slop vs undercarriage color - 69 Dearborn
Post by: Wingman on January 15, 2020, 03:37:08 AM
Yes it appears to be one of the versions of slop grey as we would expect for a car built at Dearborn during the same time period


Yes for that area that is what we would expect to see. Just the painter carrying the body color into what would become the front wheel well opening. How far forward would depend on what that painter did that day, on that car and on that side of the car. Other side could be the same or fade away at a different point

Thanks for the valuable info and knowledge. Appreciate it a lot!