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Re: Jake's Challenger/Rust [Re: ] #519305
11/12/09 12:22 AM
11/12/09 12:22 AM
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Chilliwack B.C. Canada
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RUNCHARGER Offline
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I too am impressed by your grinding and wonder what you use?

Sheldon

Re: Jake's Challenger/Rust [Re: jake71] #519306
11/12/09 08:26 AM
11/12/09 08:26 AM
Joined: Nov 2009
Posts: 61
Brighton, MI, USA
kb73rr Offline
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Quote:

Just a quick note. I sandblasted the heck out of most of the parts shown in my posts. The trick to not warping the part is to slow down the air speed. I did alot of experimenting with sand blasting due to the huge amount of posts claiming total destruction of panels from heat. It is not the heat! The speed at which the sand hits the metal has to be slowed to a point that ti does not "peen" it. Sand being thrown at metal at a high rate of speed has the same effect as a whole bunch of little dudes beating on the panel with little dude hammers! I saw first hand what happens with high velocity sand blasting on metal. It warps from the "hammer effect" not heat.Food for thought.




Good observation and totally correct. Sandblasting effectively peens the surface just like shot peening causing compressive stresses and that can cause bending and warping. The amount of bending is a function of the media type, blast pressure, impingement angle, and time. Specially made little pieces of metal called "Almen Strips" are used during commercial shot peening and abrasive blasting procedures as part of the process and quality control. You blast the Almen Strip just as you would the part your going to be working on and measure the amount of bending to verify the process is working correctly. The strip will bend in an arch up toward the surface that has been blasted.

We make jet engine parts where I work. Sometimes we do abrasive blasting to prepare the surface for dry film lube coating and we do this test every time. Incidently, if you flip the blasted strip over and blast the reverse side exactly the same, it will straighten back out. However, that's not likely to fix a warped body panel.


1973 Road Runner 2006 Grand Cherokee http://www.muskie-lures.com/73roadrunner/index1.htm "An entrance ramp is a terrible thing to waste"
Re: Jake's Challenger/Rust [Re: jake71] #519307
11/12/09 04:42 PM
11/12/09 04:42 PM
Joined: Jan 2003
Posts: 1,756
London, England
Gavin Offline
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Quote:

The repop stuff is great when you don't have an option but if yours looks marginal, fix it.



Those are wise words indeed!!

+ another request for info on your grinding (I think you said it was a Roloc disc earlier??). Really nice clean up

Re: Jake's Challenger/Rust [Re: Gavin] #519308
11/12/09 06:23 PM
11/12/09 06:23 PM
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Loveland Colorado
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jake71 Offline OP
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+ another request for info on your grinding (I think you said it was a Roloc disc earlier??). Really nice clean up



OK, here's the tool. They sell them at Harbor Freight but the discs themselves aren't nearly as durable as the ones made by 3M. I use the 36 grit to knock the welds down close to flush then finish with the 50 grit discs. They just twist into the adapter with a 1/4 turn so it's fast and easy to change them. They last quite a long time if you don't run them at high speed. Run 'em slow and you'll get the hang of it quickly. I love them moe than any of my other grinding methods for accuracy and finish. Hope you like them.

Re: Jake's Challenger/Rust [Re: jake71] #519309
11/13/09 08:22 AM
11/13/09 08:22 AM
Joined: May 2009
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Lynchburg, VA
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ridenlow12 Offline
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I use to catch a lot of flack for useing harbor freight tools but the hold up well if you dont abuse them! Plus the price is right, btw awesome work...

Re: Jake's Challenger/Rust [Re: ridenlow12] #519310
11/13/09 01:10 PM
11/13/09 01:10 PM
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Stow ,Ohio
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demon440 Offline
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I just noticed this thread.
WoW... I hope you didn't pay anything for that car.
Like I have said before,we have thrown away nicer cars than that.
I would not waste my time or money on anything that far gone.
Good Luck !

Re: Jake's Challenger/Rust [Re: demon440] #519311
11/13/09 01:22 PM
11/13/09 01:22 PM
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Chilliwack B.C. Canada
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It's an R/T Challenger, I WOULD spend my time and money on something that far gone. At least when you build something with your hands you have a sense of acomplishment. A lot better than writing a cheque at some musclecar dealer for a bondo bucket someone else flipped.

Sheldon

Re: Jake's Challenger/Rust [Re: demon440] #519312
11/13/09 01:41 PM
11/13/09 01:41 PM
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Loveland Colorado
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jake71 Offline OP
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Quote:

I just noticed this thread.
WoW... I hope you didn't pay anything for that car.
Like I have said before,we have thrown away nicer cars than that.
I would not waste my time or money on anything that far gone.
Good Luck !



That hurt a little, but I'm OK. Thanks for lookin'.

Re: Jake's Challenger/Rust [Re: RUNCHARGER] #519313
11/13/09 01:42 PM
11/13/09 01:42 PM
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Loveland Colorado
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jake71 Offline OP
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Quote:

It's an R/T Challenger, I WOULD spend my time and money on something that far gone. At least when you build something with your hands you have a sense of acomplishment. A lot better than writing a cheque at some musclecar dealer for a bondo bucket someone else flipped.

Sheldon



Thank you. It's a big project but I'm having fun with it and don't have a time crunch to contend with. It gets done when it gets done.

Re: Jake's Challenger/Rust [Re: jake71] #519314
11/13/09 03:09 PM
11/13/09 03:09 PM
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Posts: 1,152
Colorado
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Quote:

Quote:

I just noticed this thread.
WoW... I hope you didn't pay anything for that car.
Like I have said before,we have thrown away nicer cars than that.
I would not waste my time or money on anything that far gone.
Good Luck !



That hurt a little, but I'm OK. Thanks for lookin'.




Yeah, that was a bit uncalled for. I salute you for taking a car that most people wouldnt even look at twice and restoring it! So the he** what if its rusted and needs a whole new back end? You're saving a piece of mopar history and I personally think you're doing a great thing and so far, a great job!! Keep it up! People will say the same thing when they see me start my thread on my 70 R/T Charger which needs a whole new back end but so what, all that matters is that you're having fun and enjoying every second of it and if you ever need any help, i'm a part of the Southern Colorado Mopars Club - we're always willing to help out another mopar guy!

Re: Jake's Challenger/Rust [Re: CuriousYella70] #519315
11/14/09 01:26 AM
11/14/09 01:26 AM
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Stow ,Ohio
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I didn't say he was doing anything wrong.
Just don't understand why you would want to
start with such a rough car to begin with.
As far as it being an R/T, so what.
By the time he gets it finished, he will easily
have twice as much invested in it than it is worth.
There are still lot's of good deals out there,
just need to look a little harder.
Here is my $1500. Demon.
Take care, sorry if I offended you.

5604087-floor(Medium).jpg (231 downloads)
Re: Jake's Challenger/Rust [Re: demon440] #519316
11/14/09 09:39 AM
11/14/09 09:39 AM
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Posts: 290
Loveland Colorado
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jake71 Offline OP
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Quote:

I didn't say he was doing anything wrong.
Just don't understand why you would want to
start with such a rough car to begin with.
As far as it being an R/T, so what.
By the time he gets it finished, he will easily
have twice as much invested in it than it is worth.
There are still lot's of good deals out there,
just need to look a little harder.
Here is my $1500. Demon.
Take care, sorry if I offended you.



No harm done. Everyone is entitled to their own opinion. I felt that what I paid for it might be a little high but it was the project I had been looking for. I paid in the range I had been seeing them go for in similar condition. As for the time and money I'll have in it, That's not really an issue as I'm planning to keep it. I tried fishing for many years and the money I put in that was only returned to me in fun value. One of my friends spends alot of money on sailing and he'll never get any of that money back but he's having fun. If I were in this for the money I'd be a fool but It's all about the pleasure of putting this one back on the road and knowing how it was done.

Re: Jake's Challenger/Rust [Re: jake71] #519317
11/14/09 12:18 PM
11/14/09 12:18 PM

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Quote:

Quote:

I didn't say he was doing anything wrong.
Just don't understand why you would want to
start with such a rough car to begin with.
As far as it being an R/T, so what.
By the time he gets it finished, he will easily
have twice as much invested in it than it is worth.
There are still lot's of good deals out there,
just need to look a little harder.
Here is my $1500. Demon.
Take care, sorry if I offended you.



No harm done. Everyone is entitled to their own opinion. I felt that what I paid for it might be a little high but it was the project I had been looking for. I paid in the range I had been seeing them go for in similar condition. As for the time and money I'll have in it, That's not really an issue as I'm planning to keep it. I tried fishing for many years and the money I put in that was only returned to me in fun value. One of my friends spends alot of money on sailing and he'll never get any of that money back but he's having fun. If I were in this for the money I'd be a fool but It's all about the pleasure of putting this one back on the road and knowing how it was done.



Well said
and I second that

Re: Jake's Challenger/Rust [Re: demon440] #519318
11/14/09 01:12 PM
11/14/09 01:12 PM
Joined: Aug 2007
Posts: 1,271
Vista, California
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67Satty Offline
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Vista, California
Quote:


Like I have said before,we have thrown away nicer cars than that.
I would not waste my time or money on anything that far gone.
Good Luck !




You seem to say this a lot on people's threads. I don't see what the point is .

To me, it looks like he is having fun learning how to weld a car together. There's a lot of satisfaction in that (cutting out rust and welding in new metal) that can't be measured in dollars.

There are very, very few cars left out there that make any financial sense to restore. You can almost always find something finished for less than what it would cost to purchase plus restore. So what?

Last edited by 67Satty; 11/14/09 01:14 PM.
Re: Jake's Challenger/Rust [Re: demon440] #519319
11/14/09 07:22 PM
11/14/09 07:22 PM
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Eugene, Oregon
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minivan Offline
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Quote:


Here is my $1500. Demon.
Take care, sorry if I offended you.




Just to compare I can post a pic of my kids $700 olds cutlass.......

Re: Jake's Challenger/Rust [Re: minivan] #519320
11/16/09 12:52 AM
11/16/09 12:52 AM
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Posts: 1,568
Omaha, Nebraska
Scott Carl Offline
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Looks like a great project, Jake. I thought I had a lot to do on mine but you have me beat However, if I had that much to do I would do it too. Its not about the time / money when you are doing it for the simple reason of enjoyment. Mine will never be worth what I have into it either but I don't care. I plan to make it nice and hopfully enjoy it for another 30 or so years. My grand kids can then repair my damages and mistakes if they so desire. If you want to take the time to look, here's my project: https://board.moparts.org/ubbthreads/show...e=0#Post4838122

Re: Jake's Challenger/Rust [Re: Scott Carl] #519321
11/16/09 01:21 AM
11/16/09 01:21 AM
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Posts: 290
Loveland Colorado
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jake71 Offline OP
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Quote:

Looks like a great project, Jake. I thought I had a lot to do on mine but you have me beat However, if I had that much to do I would do it too. Its not about the time / money when you are doing it for the simple reason of enjoyment. Mine will never be worth what I have into it either but I don't care. I plan to make it nice and hopfully enjoy it for another 30 or so years. My grand kids can then repair my damages and mistakes if they so desire. If you want to take the time to look, here's my project: https://board.moparts.org/ubbthreads/show...e=0#Post4838122




I've been watching yours for a while now and it's projects like yours that keep me going! Thank you for stating your take on these projects. It's a hobby to me and obviously to you also. There's a lot of pride to be had in resurrecting one of these beauties and I hope more people will start taking it for face value. Great job so far and let me know if there's anything I can do to help. I don't have much experience but I do have pics!

Re: Jake's Challenger/Rust [Re: jake71] #519322
11/16/09 05:29 PM
11/16/09 05:29 PM
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Posts: 290
Loveland Colorado
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Sorry I've been away a couple days. Here's some more og the progress.
The tail light panel came out great in my opinion so I plug welded it back in after careful measuring. Lots to consider here. Also, the goodmark trunk pan was a little confusing because the back lip for the tail light panel was bent the wrong direction so I had to carefully bend it up.

Re: Jake's Challenger/Rust [Re: jake71] #519323
11/16/09 05:35 PM
11/16/09 05:35 PM
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Loveland Colorado
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I figured that as long as the trunk was still easy to access with the quaarters off, I smooyh out the pan a little where the welds were and put some surfacer on it.

Re: Jake's Challenger/Rust [Re: jake71] #519324
11/16/09 05:40 PM
11/16/09 05:40 PM
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Posts: 290
Loveland Colorado
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That last one shows the tail light panel in primer with the trunk latch bracket welded in. I don't remember if that was AMD or Goodmark. I think it was Goodmark and it went in nicely. I also had taken the spare tire and jack brackets off of the old pan, blasted them in the blast cabinet and welded them in.Here's another of the trunk in primer surfacer.

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