ConcoursMustang Forums

1st Generation 1964 1/2 - 1973 - Questions & general discussions that apply to a specific year => 1969 Mustang => Topic started by: bbs428 on February 08, 2012, 11:01:36 AM

Title: Firewall detail
Post by: bbs428 on February 08, 2012, 11:01:36 AM
Just got through painting the engine bay of the 69 mach 1 (San Jose) and it looks great...probably to good,  ::)

(http://i366.photobucket.com/albums/oo103/bbs428/428engineteststandandsomepaint039.jpg) 

But didn't the firewall get sprayed with the sound deadener also?  If so, was it complete coverage or?
Title: Re: Firewall detail
Post by: J_Speegle on February 09, 2012, 12:01:19 AM
Just got through painting the engine bay of the 69 mach 1 (San Jose) and it looks great...probably to good,  ::)


Seeing your car was around the 17xxxx's I've included some examples from that period below


But didn't the firewall get sprayed with the sound deadener also?  If so, was it complete coverage or?

Not sound deadener but an adhesive they used to seal all the openings. No it was not complete coverage, instead around or over every spot where there was an opening in the firewall was the plan except for the ground wire and screw which was added later.

Around (this time period and plant)

- heater wire, heater mounting bolts, heater hoses , any brake clip, throttle linkage, wire or electrical junction box, steering column, master cylinder or booster...you get the idea

(http://i44.photobucket.com/albums/f49/firetrainer/69-70%20Mustang%20Pics/9R01L175560firewall.jpg)


(http://i44.photobucket.com/albums/f49/firetrainer/69-70%20Mustang%20Pics/9R01L175560firewallps.jpg)


(http://i44.photobucket.com/albums/f49/firetrainer/69-70%20Mustang%20Pics/9R01L175560dsfirewall.jpg)
Title: Re: Firewall detail
Post by: bbs428 on February 10, 2012, 11:01:42 AM
Spot on Jeff. Appreciate the pic's!

I got just the stuff to muck it up a bit, then I'll topcoat that.

Thanks mate,

Brett
Title: Re: Firewall detail
Post by: Anghelrestorations on February 10, 2012, 11:22:40 AM
The 69 Assembly manual actually shows where to seal around the openings....and from what I have seen some cars had it put on real sloppy.  You would see some overspray on the wires and heater motor...and I think on the heater hoses as well if I remember correct. 
Title: Re: Firewall detail
Post by: specialed on February 10, 2012, 04:43:16 PM
Jeff what is up with that rh brake line splice in your SJ photo a west coast thing as i see someone is selling 1 on e-bay.Dont recall that on dearborn i work on or is it manual drum brake thing?
Title: Re: Firewall detail
Post by: rockhouse66 on February 10, 2012, 05:26:50 PM
Jeff what is up with that rh brake line splice in your SJ photo a west coast thing as i see someone is selling 1 on e-bay.Dont recall that on dearborn i work on or is it manual drum brake thing?

Ed - you guessed it; the splice is a manual drum brake thing.
Title: Re: Firewall detail
Post by: J_Speegle on February 10, 2012, 09:15:12 PM
I got just the stuff to muck it up a bit, then I'll topcoat that.

"Top Coat"???
Title: Re: Firewall detail
Post by: specialed on February 10, 2012, 09:33:40 PM
What is the purpose for it ? All cars i work on have disc brakes & lines are 1 piece . Are drum brake lines easy to install in 2 pieces?
Title: Re: Firewall detail
Post by: rockhouse66 on February 10, 2012, 09:48:10 PM
Ed - I am equally puzzled; must be something about the shape of the drum brake hydraulic line that makes it difficult or  impossible to route through the apron in one piece?  I haven't had mine apart to be able to answer that question, but it appears all drum brake cars are this way, with that union in the PS brake line.
Title: Re: Firewall detail
Post by: bbs428 on February 11, 2012, 09:17:52 AM
So the adhesive was the last thing sprayed on the firewall, over the paint?
Title: Re: Firewall detail
Post by: ruppstang on February 11, 2012, 10:36:11 AM
The drum brake line has a U shape on the end that will not fit through the shock tower hole. Marty
Title: Re: Firewall detail
Post by: Anghelrestorations on February 11, 2012, 03:42:59 PM

You can see better here the problem with that part of the brake line.  I thought it was a mistake the first time I saw it, but now see it on all 69 and 70 front drum brake cars....

(http://i191.photobucket.com/albums/z213/azscj/P2110692.jpg)

(http://i191.photobucket.com/albums/z213/azscj/P2110693.jpg)
Title: Re: Firewall detail
Post by: J_Speegle on February 11, 2012, 07:07:14 PM
So the adhesive was the last thing sprayed on the firewall, over the paint?

It was sprayed on the firewall long after it was painted black, so yes - over the paint.

Guess it was just the term you used - no problem just wanted to be clear on my explanation

Title: Re: Firewall detail
Post by: J_Speegle on February 11, 2012, 07:12:07 PM
You can see better here the problem with that part of the brake line.  I thought it was a mistake the first time I saw it, but now see it on all 69 and 70 front drum brake cars....

Correct - not a San Jose thing but a design used at all the plants for non-disc Mustangs
Title: Re: Firewall detail
Post by: specialed on February 12, 2012, 01:26:30 PM
Makes sense after seeing marcus photo. I remember having a drum brake mach 1 years ago & after seeing the splice in the line i thought the line had a leak somewhere & somebody repaired it on the end
Title: Re: Firewall detail
Post by: TLea on February 13, 2012, 07:15:01 PM
Make sure you don't get any goop on the wires or grommet put in at AO
Title: Re: Firewall detail
Post by: svo2scj on February 13, 2012, 09:16:36 PM
Hi
Seeing it is a 1969 SJ I can offer this.

(http://i38.photobucket.com/albums/e136/svo2scj/AZ%20R%20code%20restoration/AZmustang179.jpg)

I got the runs and the "blob" as close as I could on the restoration.  (50% of the pass wasn't on holes or bolts)

Mark
Title: Re: Firewall detail
Post by: bbs428 on February 23, 2012, 09:16:48 AM
Appreciate all the replies. 

I have enough pic's now to duplicate the sealer and application.

Sure hate to spray sealer over the new paint (It looks so good!) but I want the car to be as original as I can get it within reason. So on it goes!
I always hear that this car or that car, is over restored.  I get it now. After all the work you put into making the car look nice, It's very hard to intentionally use the old Ford assembly line techniques with the sealers and such and opt for a clean fresh look.

Thanks,

Brett
Title: Re: Firewall detail
Post by: Bob Gaines on February 23, 2012, 12:52:11 PM
Make sure you don't get any goop on the wires or grommet put in at AO
Just to clarify so less confusion this is a SJ Mach . Tim is referring correctly if on a Shelby car the wires and grommets installed at AO Smith would be after the sound deadner and so you wouldn't want spray on those Shelby items in that case. 
Title: Re: Firewall detail
Post by: J_Speegle on February 23, 2012, 07:10:49 PM
Sure hate to spray sealer over the new paint (It looks so good!) but I want the car to be as original as I can get it within reason. So on it goes!
I always hear that this car or that car, is over restored.  I get it now. After all the work you put into making the car look nice, It's very hard to intentionally use the old Ford assembly line techniques with the sealers and such and opt for a clean fresh look.

Oh I've had many owners ask me to spray the stuff on their cars for that very reason but on the other hand they knew it needed to be done to look real. Its allot easier after you have done this to a few dozen or more. And the later cars (69-up) are the worst since they used a different product and it often was applied allot heavier

You can do it - we're here for you ;)