Author Topic: Undercoating in wheelwells  (Read 2768 times)

copo69

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Undercoating in wheelwells
« on: March 07, 2007, 08:06:54 PM »
Is there a product that duplicates the undercoating the factory applied to the wheelwells?

m22mike

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Re: Undercoating in wheelwells
« Reply #1 on: March 08, 2007, 02:27:51 AM »
Is there a product that duplicates the undercoating the factory applied to the wheelwells?

Not to my knowledge, however 3M body shultz # 08864 when applied with a undercoating gun does a nice job and gives a close look to the original. You will need to give it several coats for proper build. One Qt. usually is not enough.
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janobyte

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Re: Undercoating in wheelwells
« Reply #2 on: January 22, 2016, 10:53:04 PM »
Very old topic, but what's the general consensus ? Spray pressure?

janobyte

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Re: Undercoating in wheelwells
« Reply #3 on: January 22, 2016, 10:54:35 PM »
Quart of 3m and the gun pretty cheap through Amazon.

cook_dw

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Re: Undercoating in wheelwells
« Reply #4 on: January 22, 2016, 11:52:38 PM »
Jano I would start between 60-80psi and practice to see how it lays.
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janobyte

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Re: Undercoating in wheelwells
« Reply #5 on: January 23, 2016, 12:43:58 AM »
thanks, planned on shooting some test patterns. also no intention on laying it as thick as what I scraped off. Want some detail to show. Good pic of a survivor HO 69 on TC. Although I had complete coverage in the rears. Could be the dealer added to the mix. Even my inner doors have complete coverage. HOWEVER, listening to my friend who shot the car(and does this for a living) The goop has preserved everything. Been giving the fasteners a lacquer thinner soak/bath, brass brush. Knock on wood, so far they have been coming right back. Zinc looking new, phosphate appears fresh. Than brushing over Sharkskin. Spoke to my interior guy, car's slated  this spring for the headliner. He did work on it in 76: rear package tray, carpeted the trunk, gauge housing. So I really wanted him to get his hands on it this go around.

BillOhio

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Re: Undercoating in wheelwells
« Reply #6 on: January 23, 2016, 02:53:14 AM »
Jano, did you know the front need done also? Theres a picture in the AIM on it if you need a reference. Mine looked pretty much like what it shows
1969 Z28, Burgandy, numbers matching, 12,900 miles
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janobyte

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Re: Undercoating in wheelwells
« Reply #7 on: January 23, 2016, 12:18:20 PM »
Thanks , yes. Mine was smooth in texture vs. the coarse rears. Also appeared it was applied in such away as to allow it to flow downward. Probably a good month until I'm re-attacking the front chassis and subframe.

Off topic, but chuckled yesterday questioning quality control during roof rail installation, must have been Friday,(or Monday) lol, all the fasteners were never installed. Also the 1/2"  seal snaked down the rail, partially off in some areas. I used a 3m product that has good adhering, but still allows you to work with it. HBC recommendation,also their fasteners matched to the originals.

 Bill, sounds like our cars shared a similar past. I've been having great success just using Autosol on the stainless-no process/buffing. Locksets look like new. Works great on the lens also. Started with toothpaste on the plastic, wasn't happy with it. Read they use Autosol on plexiglass, so I gave it a try.

janobyte

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Re: Undercoating in wheelwells
« Reply #8 on: January 23, 2016, 12:27:36 PM »
Treating the seals, per JohnZ(TC thread):

Sauron327

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Re: Undercoating in wheelwells
« Reply #9 on: January 23, 2016, 05:19:13 PM »
I used a 3m product that has good adhering, but still allows you to work with it. HBC recommendation,

Heartbeat sells the 3M double faced tape which I do not use. I use single sided tape to allow for adjustment. Just because a vendor sells a product, does not mean it is the best for a particular application.

janobyte

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Re: Undercoating in wheelwells
« Reply #10 on: January 23, 2016, 06:40:30 PM »
yea, I get that. Initially had reservations for the reason you stated. Applied it to the rail first, pierced the screw holes, installed a few fasteners to ensure head alignment with the old marring, peeled the non-adhesive film off, reinstalled all the fasteners loosely, aligned then finished tightening. Until firm pressure was applied, the tape allowed movement. Obviously more steps involved vs. single side tape, but not a pita. Of course, only doing one car where everything aligns back up. Could see this being a headache with all new (aftermarket) parts.

Lets make this productive:

Share what you use, thanks. 

Sauron327

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Re: Undercoating in wheelwells
« Reply #11 on: January 23, 2016, 07:57:52 PM »
I go to a hardware store and buy single sided foam tape. It is available in a many dimensions. The factory actually aligned the roofrail channel to the glass with the use of a block. JohnZ posted a photo. I'd have to dig for it.

x77-69z28

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Re: Undercoating in wheelwells
« Reply #12 on: January 23, 2016, 09:22:17 PM »
COPO, check Lord Fusor products. I am 99.9% sure that's what I used on my 67 restoration. It is very close to the original. I remember shooting it at very low pressure.
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x77-69z28

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Re: Undercoating in wheelwells
« Reply #13 on: January 23, 2016, 09:24:12 PM »
Oh jeez. Just noticed this thread was from 2007!
69 x77 burnished brown, 711 int 05A bought in 78
67 rs/ss 350 butternut yellow 4 speed 2nd owner
70 Z28 forrest green, green int, M40, bk vinyl roof PROJECT
99 SS hugger orange 6spd NO TTOPS bought new 1 of 54
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janobyte

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Re: Undercoating in wheelwells
« Reply #14 on: January 23, 2016, 10:07:55 PM »
yea, said it was old....has taken me that long just to scrape the stuff off !

Seriously, thanks for the reply. Couple off us are currently at the point where resurfacing the thread might help. Learning what is good and bad out there as far as product is everything. TC seemed pretty unanimous to Mike22's suggestion of 3m.

....undercoating, more fun building racecars !! But not as relaxing.