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Rearching Leaf Springs - Good Idea? #2673383
07/02/19 09:26 PM
07/02/19 09:26 PM
Joined: Apr 2012
Posts: 1,174
Macomb, MI
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vinnyd76 Offline OP
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vinnyd76  Offline OP
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Joined: Apr 2012
Posts: 1,174
Macomb, MI
Anyone have luck with restoring rear leaf springs? Good idea? Does the rearching process last for a while? I looked into a set of stock reproduction 340 A-Body leaf springs through Mopar, but they stopped making them.

Re: Rearching Leaf Springs - Good Idea? [Re: vinnyd76] #2673391
07/02/19 09:56 PM
07/02/19 09:56 PM
Joined: Jan 2003
Posts: 5,293
Benton, IL.
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DaveRS23 Offline
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Benton, IL.
Have you thought about just using some good helper leafs? I have had these on the Cuda for several years. They are Hellwigs. They are out of sight and you can adjust the height to your preference instead of hoping the spring guys get it right.

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KOS
Re: Rearching Leaf Springs - Good Idea? [Re: DaveRS23] #2673451
07/03/19 12:40 AM
07/03/19 12:40 AM
Joined: Jul 2008
Posts: 19,261
...to Paradise from ParaICE !
Doc Fiberglass Offline
Help! I've fallen and can't get up!
Doc Fiberglass  Offline
Help! I've fallen and can't get up!

Joined: Jul 2008
Posts: 19,261
...to Paradise from ParaICE !
I did it a long LONG time ago with a 20 lb sledge !

No harbor freight presses then ! Do it that way now !


...... oh I’m UP ... BIG TIME ... alive and well ... the Noble Crusader !
Re: Rearching Leaf Springs - Good Idea? [Re: Doc Fiberglass] #2673452
07/03/19 12:45 AM
07/03/19 12:45 AM
Joined: Nov 2003
Posts: 35,414
Lincoln Nebraska
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RapidRobert Online content
Circle Track
RapidRobert  Online Content
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Joined: Nov 2003
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Lincoln Nebraska
I would clamp it in 2 places with C clamps a bit out from the center bolt & crack the nut with a nut cracker (nut tends to be frozen & the rounded head bolt is special) then gradually loosen em to dissassemble then bend the main leaf then reassemble. I always wanted to try those zinc liners that speedway sells tho I cant say I ever had an issue with squeaky springs.


live every 24 hour block of time like it's your last day on earth
Re: Rearching Leaf Springs - Good Idea? [Re: Doc Fiberglass] #2673526
07/03/19 10:06 AM
07/03/19 10:06 AM
Joined: Jan 2008
Posts: 916
Minn
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SportF Offline
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Posts: 916
Minn
Originally Posted by Doc Fiberglass
I did it a long LONG time ago with a 20 lb sledge !

No harbor freight presses then ! Do it that way now !



Factory springs are the best there ever was. Re-arching is the only way to go. Have done this on my press many times and it lasts, like no other spring. Hammers work too.

Re: Rearching Leaf Springs - Good Idea? [Re: SportF] #2673534
07/03/19 10:39 AM
07/03/19 10:39 AM
Joined: Apr 2007
Posts: 2,358
Calgary, Alberta Canada
a12rag Offline
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Posts: 2,358
Calgary, Alberta Canada
When I restored my Sport Satellite, I went with a set of Mopar Performance rear springs . . . . UGGHHH !!! . . . after about 1 year the car "sank" about 2" !! I really did not like the look of the flat springs and back end going down . . . took the original springs to local shop, they re-arched them, and added 1 leaf ! That was about 3 or 4 years ago now, and they have not sagged at all. Not sure if the Mopar Performance springs are better now, but if I had the choice, I would keep my originals and get them re-arched !

Re: Rearching Leaf Springs - Good Idea? [Re: a12rag] #2673540
07/03/19 11:00 AM
07/03/19 11:00 AM
Joined: Jan 2005
Posts: 2,437
USA, MI
MarkM Offline
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MarkM  Offline
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Joined: Jan 2005
Posts: 2,437
USA, MI
I had the factory springs on my 87 re-arched with a helper leaf added by a local spring shop. Car had a serious sag to it beforehand. Raised the car about 2" higher than what I wanted and it settled back down to factory ride height after a couple days - exactly what the spring shop said would happen. It held that height for six or seven years until I pulled the springs and went with new ones while I was rebuilding the entire suspension. They were still at the correct height when pulled and I gave them to another guy who to my knowledge still runs them on his car.

Either get the re-arched or call John R Spring and see if they have something that will fit.

Re: Rearching Leaf Springs - Good Idea? [Re: MarkM] #2673556
07/03/19 11:59 AM
07/03/19 11:59 AM
Joined: Jan 2003
Posts: 17,579
albany ny
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05dakota Offline
I Live Here
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Joined: Jan 2003
Posts: 17,579
albany ny


66 ford mustang coupe. 01 mustang gt.06 mustang coupe .94 ford taurus sho.66 chrysler newport 2 dr .68 chrysler 300 vert .70 challenger r/t .73 dodge dart swinger. 74 cuda .91 chrysler lebaron vert.77 buick electra limited 5549 postonold board
Re: Rearching Leaf Springs - Good Idea? [Re: 05dakota] #2673561
07/03/19 12:05 PM
07/03/19 12:05 PM
Joined: Feb 2003
Posts: 6,849
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fullmetaljacket Offline
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Isn't it cheaper and faster to add a SLIGHTLY longer shackle or would that mess with the angle of the shackle.

Re: Rearching Leaf Springs - Good Idea? [Re: fullmetaljacket] #2673570
07/03/19 12:32 PM
07/03/19 12:32 PM
Joined: Jan 2003
Posts: 13,841
So Near, Yet So Far
topside Online content
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topside  Online Content
I Live Here

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Posts: 13,841
So Near, Yet So Far
Longer shackle raises teh body above the spring, but also leverages the weight at the most advantage over the spring.
The back half of the spring essentially supports the car's weight.
Re-arching has worked for me in the past. Years back, about $125-$150 from a good shop.
Where I live now, there's 1 spring guy within a 100-mile or so radius, and he's greedy: $400-$450 to re-arch.
I bought springs from Espo for much less than that - about $280 to my door - and I'm very happy with them.

Re: Rearching Leaf Springs - Good Idea? [Re: topside] #2673576
07/03/19 12:47 PM
07/03/19 12:47 PM
Joined: Jan 2003
Posts: 19,797
Niles , Ohio
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therocks Offline
Its Lost
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Posts: 19,797
Niles , Ohio
Had the ones on my kids 62 300 done.He had them add a leaf and 1 inch more arch at the time.He drove the car at least 14 years and they were better than any new spring you could buy now.He beat the car to death mileage and racing.My 57 if the mains werent all broke they would have been done also.Just happened that local spring shop had a set they made probally 30 years before that I bought.Rocky


Chrysler Firepower
Re: Rearching Leaf Springs - Good Idea? [Re: therocks] #2673578
07/03/19 12:51 PM
07/03/19 12:51 PM
Joined: Jan 2003
Posts: 2,732
Gilbertsville, PA 19525
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Pntastar69 Offline
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Gilbertsville, PA 19525
Had mine reached and added another leaf 15 years ago. Still the same stance and ride and cheaper.

Re: Rearching Leaf Springs - Good Idea? [Re: 05dakota] #2673584
07/03/19 01:12 PM
07/03/19 01:12 PM
Joined: Jan 2003
Posts: 2,049
Oklahoma City
Jwilli500 Offline
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Jwilli500  Offline
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Oklahoma City
Originally Posted by 05dakota

Most guys on here seem to be happy with these folks.

Re: Rearching Leaf Springs - Good Idea? [Re: Pntastar69] #2673585
07/03/19 01:15 PM
07/03/19 01:15 PM
Joined: Jan 2005
Posts: 2,437
USA, MI
MarkM Offline
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MarkM  Offline
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Posts: 2,437
USA, MI
I just noticed you're in Macomb. Northern Spring on Groesbeck is the shop I had re-arch the original springs. John R Spring is at 14 and Dequindre in Troy if you wanted to look into new ones. I paid $240 back when for the re-arch and $280 for the new ones and that included one added leaf over stock (five in total) and rubber bushings.

Re: Rearching Leaf Springs - Good Idea? [Re: MarkM] #2673625
07/03/19 02:46 PM
07/03/19 02:46 PM
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Posts: 2,952
usa
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lewtot184 Offline
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usa
did it once; wouldn't do it again.

Re: Rearching Leaf Springs - Good Idea? [Re: vinnyd76] #2674457
07/05/19 02:21 PM
07/05/19 02:21 PM
Joined: May 2011
Posts: 194
Aurora, CO
jbeintherockies Offline
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jbeintherockies  Offline
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Posts: 194
Aurora, CO
I just did mine last month. My springs are the MP springs, which are built by JR Spring in Michigan. They are a high quality spring.

The first time the shop in Denver arched them, they went way too much. I had to remove them and bring them back to take 1-3/4" of arch out of them (and yes, pay again). At that point I had $320 in re-arching the springs. For another $100 or so I could have bought new springs. My car is lowered, so I would have to buy springs that have at least 1" less arch. The key takeaway is, take them to a good shop to have them re-arched. It is too early to tell how well they will hold up. The shop said they will probably lose about 1/2" of arch over the course of a year or two.


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