Pros and Cons of Undercoating
#1216117
04/15/12 12:48 PM
04/15/12 12:48 PM
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Joined: Jan 2007
Posts: 352 Arizona
69rrgrabber
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Trying to decide on if I should reunder coat the 69 Charger I'm working on. Despite no option code for undercoating of thefender tag, the car seemed to be undercoated from the factory. Is this common to have a car undercoated and nothing on the fender tag? Any, I'm in Southern Arizona and not too worried about road salt or excessive rain. I am puting a quality sound / heat liner under the carpet so I wonder if that will be enough to supress heat and road sound. Anyone out there not re undercoat and regrett it? Why? Thanks, Carl
"It takes a Mopar to catch a Mopar!"
1969 Charger R/T 440
1969 Road Runner 383
1970 Cuda 440
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Re: Pros and Cons of Undercoating
[Re: 69rrgrabber]
#1216118
04/15/12 01:14 PM
04/15/12 01:14 PM
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Joined: Aug 2005
Posts: 6,018 Salem
Grizzly
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The undercoating from day 2 could be the old dealership gimmick from when the car was bought new. Used to be the first question they asked you when you bought a new car. $20.00 worth of material, $3.00/hr oil change guy = a couple of hundred dollars in the dealerships' pocket. It's been modified to today's standards though: they call it the "protection package". Etched glass and a black spray bomb of crap in the wheel-wells, or some stupid thing like that. Think they're up to 6 or 700 bucks now..... Good question about the sound deadening.....
Mo' Farts
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Re: Pros and Cons of Undercoating
[Re: ScottSmith_Harms]
#1216120
04/15/12 06:13 PM
04/15/12 06:13 PM
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6PakBee
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I'm becoming a fan of urethane bed liner in the wheel wells and stopping there.
"We live in a time when intelligent people are being silenced so that stupid people won't be offended".
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Re: Pros and Cons of Undercoating
[Re: ScottSmith_Harms]
#1216123
04/16/12 12:33 AM
04/16/12 12:33 AM
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69rrgrabber
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No, I don't think it had the under hood pad. The car was totally repainted, color change, about 15 years ago. But they did a bad job and the car never got finished.
The code for factory undercoating with the hood pad is J25 I think. I don't have it on my fender pad. The undercoating sure looks like the factory stuff but I don't know for sure. After all this work scraping it off I really hate to re undercoat it again.
With the wheel wells, were they all done standard at the factory or was that part of the under coating and hood pad option? It seems to make sense that I at least replace the undercoating in the wheel wells to prevent chipping.
"It takes a Mopar to catch a Mopar!"
1969 Charger R/T 440
1969 Road Runner 383
1970 Cuda 440
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Re: Pros and Cons of Undercoating
[Re: 69rrgrabber]
#1216124
04/16/12 12:43 AM
04/16/12 12:43 AM
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Quote:
No, I don't think it had the under hood pad. The car was totally repainted, color change, about 15 years ago. But they did a bad job and the car never got finished.
The code for factory undercoating with the hood pad is J25 I think. I don't have it on my fender pad. The undercoating sure looks like the factory stuff but I don't know for sure. After all this work scraping it off I really hate to re undercoat it again.
With the wheel wells, were they all done standard at the factory or was that part of the under coating and hood pad option? It seems to make sense that I at least replace the undercoating in the wheel wells to prevent chipping.
And NOTHING looks worse than seeing body color in the wheelwells.....
MB
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Re: Pros and Cons of Undercoating
[Re: HPMike]
#1216125
04/16/12 01:40 AM
04/16/12 01:40 AM
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mopars_1
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one way to tell if it was factory or dealership applied, is if there is evidence of masking off of certain areas under the car. the factory masked off areas like the leaf spring perches and a few spots on the torsion bar cross mount. they did this because they undercoated before assembly of suspension. dealership undercoating would probably be on the leaf springs, torsion bars maybe rear axle as it was sloppily applied over everything.
IIRC, all mopars had undercoating in the wheel wells except some LA built cars? maybe someone can correct me on this.
as far as undercoating your car, if you already have the old stuff scraped off, Id leave it off. I spent a lot of time and money to try and get my factory undercoated car to look good underneath. It works ok as a sound detonator, but something like fat mat or equivalent will work much better. not to mention it looks a lot cleaner with no undercoating and also doesn't look like your trying to hide anything.. hope this helps
1971 Plymouth Duster 340 auto 1937 Plymouth PT50 1969 Dodge Dart Swinger 340 4 speed 2013 Ram laramie 2500 hemi 2008 Harley FLSTSB springer
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Re: Pros and Cons of Undercoating
[Re: 69rrgrabber]
#1216127
04/16/12 08:59 AM
04/16/12 08:59 AM
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Joined: Jan 2003
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JohnRR
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Quote:
With the wheel wells, were they all done standard at the factory or was that part of the under coating and hood pad option? It seems to make sense that I at least replace the undercoating in the wheel wells to prevent chipping.
Wheel wells were always done , both front and rear along with a small area above the pinion snubber and maybe the tail of the trans above the spinning u joint ...
I'll let Scott or someone with more knowledge there correct this one ... I stopped paying attention to what's right a long time ago because most restored cars are wrong .
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Re: Pros and Cons of Undercoating
[Re: JohnRR]
#1216129
04/16/12 01:58 PM
04/16/12 01:58 PM
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Quote:
Quote:
With the wheel wells, were they all done standard at the factory or was that part of the under coating and hood pad option? It seems to make sense that I at least replace the undercoating in the wheel wells to prevent chipping.
Wheel wells were always done , both front and rear along with a small area above the pinion snubber and maybe the tail of the trans above the spinning u joint ...
I'll let Scott or someone with more knowledge there correct this one ... I stopped paying attention to what's right a long time ago because most restored cars are wrong .
The bottom of the gas tank was coated as well, IIRC.
MB
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Re: Pros and Cons of Undercoating
[Re: 69rrgrabber]
#1216131
04/16/12 02:13 PM
04/16/12 02:13 PM
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Joined: Apr 2005
Posts: 15,134 Kelowna, B.C. Canada
DPelletier
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I would only do the wheelwells. No reason to go the full undercoating route on a collector car IMO and whenever I see a car for sale with the full undercoating, I wonder what they are trying to hide. Dave
1970 Super Bee 440 Six Pack
1974 'Cuda
2008 Ram 3500 Diesel
2006 Ram 3500 Diesel
2004.5 Ram 2500 Diesel
2003 Ram 3500 Diesel
2006 Durango Limited
[url] http://1970superbee.piczo.com [/url]
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Re: Pros and Cons of Undercoating
[Re: ScottSmith_Harms]
#1216133
04/16/12 03:25 PM
04/16/12 03:25 PM
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JohnRR
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Quote:
On non undercoate ordered cars the front wheel wells were often NOT undercoated (more correctly referred to as sound deadener) when from the Los Angeles assembly plant. In addition the rears were often dine very sparingly with only small amounts getting on the surrounding areas like the has tank etc.
I didn't know that Scott.
One thing I have been trying to determine is if the front on my 69 383 Dart (hamtramack) was not undercoated when built. I can't say for sure because front fenders have been replaced from a front end collision back around 1980, but it looks to have never been done when new ????
Can't remember seeing gas tank undersides done on non undercoated cars but heree in the northeast everything I have stripped has been undercoated usually.
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Re: Pros and Cons of Undercoating
[Re: JohnRR]
#1216134
04/16/12 03:37 PM
04/16/12 03:37 PM
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Quote:
Quote:
On non undercoate ordered cars the front wheel wells were often NOT undercoated (more correctly referred to as sound deadener) when from the Los Angeles assembly plant. In addition the rears were often dine very sparingly with only small amounts getting on the surrounding areas like the has tank etc.
I didn't know that Scott.
One thing I have been trying to determine is if the front on my 69 383 Dart (hamtramack) was not undercoated when built. I can't say for sure because front fenders have been replaced from a front end collision back around 1980, but it looks to have never been done when new ????
Can't remember seeing gas tank undersides done on non undercoated cars but heree in the northeast everything I have stripped has been undercoated usually.
The bottom of the tank on my Hemi Challenger is coated, and I am 100% sure that it is original. Also had a survivor '70 GTX in here that had the bottom of the tank coated as well.
MB
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Re: Pros and Cons of Undercoating
[Re: 71rm23]
#1216136
04/16/12 07:58 PM
04/16/12 07:58 PM
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Joined: Apr 2005
Posts: 15,134 Kelowna, B.C. Canada
DPelletier
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Quote:
I was under the impression that it was applied from the dealer. I could be wrong, done that before. My car was built in St. Louis. The car has undercoating on it. All I can say is that I'm removing it now to paint. With the coating, it has saved my car from the cancerous rust. With that, now I'm debating whether or not to re-apply it after paint.
Some cars got full undercoating from the factory, some were done at the dealership and some weren't undercoated at all (except the wheelwells as mentioned previously).
Obviously the undercoating has helped preserve the car and so the answer as to what to do depends on you: what are your plans for the car?
In my case, my car will never see snow, never see a dirt road and rain will be avoided; it won't be going out of it's heated shop in the winter and will likely only get driven a few times a month seasonally....therefore there is no need whatsoever for full undercoating and I like being able to see everything under the car clearly. I also think that should I ever sell the car, buyers will also want to clearly see the condition of the underside of the unibody.
Now, if you are planning on using your car as a year round daily driver, I'd put the undercoating back on.
Dave
1970 Super Bee 440 Six Pack
1974 'Cuda
2008 Ram 3500 Diesel
2006 Ram 3500 Diesel
2004.5 Ram 2500 Diesel
2003 Ram 3500 Diesel
2006 Durango Limited
[url] http://1970superbee.piczo.com [/url]
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