Author Topic: seam seal  (Read 411 times)

Offline tony 73

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seam seal
« on: December 02, 2018 - 03:43:06 am »
Where to put seam sealer and how to get it smooth in those highly visible places ?

Am I doing the right thing in using masking tape ? the gap between the rear quarter and tail panel is so easily seen.

Should I resist the urge to put sealer in areas where dirt and grim can enter gaps in engine bay and underside of car ?




Offline 70chall440

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Re: seam seal
« Reply #1 on: December 02, 2018 - 12:37:09 pm »
I used a tube of seam sealer and cut the tip to a fine/small hole that allowed me to put the sealers in those areas cleanly. One thing I will say is that once you start (preferably a corner) you have to keep moving to a natural end because if you stop mid way it tends to much up or pile up.

The tape idea will work I think. You can also clean off some of the sealer using something like lacquer thinner. I would not worry too much about it as it all gets painted over. Put the sealer where ever you dont want water/dirt to get through.
Current Mopar
70 Challenger RT 440-6, 73 Cuda (under const)
05 Durango, 99 Dakota, 01 Ram 4x4, 14 2500 4X4, 10 PCP Challenger RT, 01 Viper GTS ACR, 52 B3B w/330 Desoto Hemi, 70 Hemi RR, 61 Jeep FC170
Past Mopars
9 x Challengers. AAR Cuda, 4 RR, 2 GTX, 4 Chargers, etc... (too many to list)

Offline tony 73

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Re: seam seal
« Reply #2 on: December 03, 2018 - 05:05:53 am »
Thanks mate, your words of wisdom will be handy.

Rang a friend in my home town who has a 71 Cuda,I thought it had had a resto job but he said no, still has original paint so will take my camera as pictures are worth a thousand words .

Offline Beekeeper

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Re: seam seal
« Reply #3 on: December 03, 2018 - 09:41:04 am »
I havent got as far on my project as you so Im watching this to see how the exterior seam sealing works out. I have sealed some panels inside and noticed that stuff is thicker than tar and doesnt smooth out very easily. No big deal on the inside since the factory sealant was also very sloppy.

Im wondering if there are better sealants for the exterior that are thinner and flow out smoother to save labor. If not, I might seal up the joints while bare metal so that I can sand them smooth during the body work process and put down a good epoxy primer to cover it all up.

Offline 70chall440

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Re: seam seal
« Reply #4 on: December 03, 2018 - 12:55:46 pm »
It seems I saw something on the internet or perhaps it was on TV about someone "thinning" some seam sealer just for this purpose. As I recall, some sealer was thinned out using perhaps acetone or lacquer thinner and then applied using a syringe type deal. When I did my Cuda, I just used a tube and caulking gun and as I advised, cut a small hole in the tip to allow me to do all of the tight spots. 
Current Mopar
70 Challenger RT 440-6, 73 Cuda (under const)
05 Durango, 99 Dakota, 01 Ram 4x4, 14 2500 4X4, 10 PCP Challenger RT, 01 Viper GTS ACR, 52 B3B w/330 Desoto Hemi, 70 Hemi RR, 61 Jeep FC170
Past Mopars
9 x Challengers. AAR Cuda, 4 RR, 2 GTX, 4 Chargers, etc... (too many to list)

Offline jimynick

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Re: seam seal
« Reply #5 on: December 03, 2018 - 09:17:08 pm »
You don't have to over-think this. It's quite simple, just cut the tube to the size best suited to the application at hand and holding it so that the sealant is pushed into the seam, apply just enough power to flow the amount needed. When you get done, take a rag wetted with thinners and wipe off any excess. You can also dip a finger into thinners and do it that way- just a bit mussier. There are varying grades and types of sealers to give different results and I used Pro Form 214 and 224 on my Challenger. One's smooth and semi self leveling and one's a urethane base and grainier and harder to get to lay down. there's lots of choices and for what it's worth, I sealed every seam I found in that car because that's where the rust started and hid. Just my  :2cents:   :cheers:

Offline 70chall440

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Re: seam seal
« Reply #6 on: December 03, 2018 - 10:34:57 pm »
You don't have to over-think this. It's quite simple, just cut the tube to the size best suited to the application at hand and holding it so that the sealant is pushed into the seam, apply just enough power to flow the amount needed. When you get done, take a rag wetted with thinners and wipe off any excess. You can also dip a finger into thinners and do it that way- just a bit mussier. There are varying grades and types of sealers to give different results and I used Pro Form 214 and 224 on my Challenger. One's smooth and semi self leveling and one's a urethane base and grainier and harder to get to lay down. there's lots of choices and for what it's worth, I sealed every seam I found in that car because that's where the rust started and hid. Just my  :2cents:   :cheers:

 :iagree:
Current Mopar
70 Challenger RT 440-6, 73 Cuda (under const)
05 Durango, 99 Dakota, 01 Ram 4x4, 14 2500 4X4, 10 PCP Challenger RT, 01 Viper GTS ACR, 52 B3B w/330 Desoto Hemi, 70 Hemi RR, 61 Jeep FC170
Past Mopars
9 x Challengers. AAR Cuda, 4 RR, 2 GTX, 4 Chargers, etc... (too many to list)

Offline tony 73

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Re: seam seal
« Reply #7 on: December 09, 2018 - 08:17:17 pm »
Excellent feed back, thanks guys.

Went to see my friend's 71 Cuda and took lots of photos of untouched sealer. Was surprised where it was and quantity used.

Offline Beekeeper

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Re: seam seal
« Reply #8 on: December 09, 2018 - 08:41:14 pm »
I scraped out all of the original sealer from the inside of my RT and found it was everywhere. The factory used a ton inside and made a big mess. Looks great now.

Offline jimynick

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Re: seam seal
« Reply #9 on: December 09, 2018 - 10:01:25 pm »
Your buddy's Cuda looks to have had the rt 1/4 changed, so don't consider the sealing done on it to be representative of the factory's messes. As mentioned, the factory slapped on sealers like they were free and couldn't wait to use them up. The factory seam on the rt trunk extension to floor panel seam on my Challenger had a measured and photo'd, 3/4" thick mound of the schmutz! Pretend you're half pissed and don't give a damn and you'll likely reproduce the factory effect perfectly!  :cheers:

Offline 70chall440

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Re: seam seal
« Reply #10 on: December 09, 2018 - 11:55:49 pm »
Yeah the factory certainly didn't take any time to make it look pretty; squirt it on and move out.
Current Mopar
70 Challenger RT 440-6, 73 Cuda (under const)
05 Durango, 99 Dakota, 01 Ram 4x4, 14 2500 4X4, 10 PCP Challenger RT, 01 Viper GTS ACR, 52 B3B w/330 Desoto Hemi, 70 Hemi RR, 61 Jeep FC170
Past Mopars
9 x Challengers. AAR Cuda, 4 RR, 2 GTX, 4 Chargers, etc... (too many to list)