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Figured out what the squeak was!
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61_Imperial
Posted 2015-09-24 1:05 PM (#490532)
Subject: Figured out what the squeak was!



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Location: Georgetown Texas

My imperial made an awful noise when it was sat in, or hit a bump. I figured it was the collapsed leaf spring bushings. While they were very bad and I have replaced them, i think I found more of the culprit.

 

 

That was the mount for the upper trailing arms above the leaf springs that connect to the axle. the whole mount broke. 

 

I am going to remove the bracket and have it welded. While I have it out, does anyone know which bushings go in those upper trailing arm leafs? There are two, one on the frame and one on the axle side.

 

Thanks guys! I really appreciate it!

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61_Imperial
Posted 2015-09-24 1:19 PM (#490536 - in reply to #490532)
Subject: RE: Figured out what the squeak was!



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Location: Georgetown Texas		I found the replacement bushings on Ebay actually, but $227! Wow. there has got to be a cheaper set somewhere...

http://www.ebay.com/itm/Rear-Axle-Control-Strut-Bushings-for-1956-1...
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wizard
Posted 2015-09-24 2:36 PM (#490542 - in reply to #490532)
Subject: Re: Figured out what the squeak was!



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Location: Southern Sweden - Sturkö island		That looks like stress cracks, check if something else is bent or damaged.
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61_Imperial
Posted 2015-09-24 3:16 PM (#490546 - in reply to #490542)
Subject: Re: Figured out what the squeak was!



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wizard - 2015-09-24 2:36 PM

That looks like stress cracks, check if something else is bent or damaged.


It may have been years of driving with a destroyed transmission mount, both ends of the leaf spring bushings were collapsed... I believe that is what destroyed the Ujoint.

Its been that way for awhile, the cracks are just as rusted as everything else (the car isn't rusty, but its not new metal)

If anyone has a parts car or knows what other years those support mount was used, let me know. I see in the shop manual a section on how to shim that so it stays true. Surely it wasnt different for many cars. It mustve just been the big heavy ones, our 1958 Dodge does not have anything like that. just the leaf itself.

P.S.

I found through RARE Parts the bushings it needs, for less money. Not much less, but about $40 and its 2 day shipping, for anyone else who needs them)

http://www.amazon.com/Rare-Parts-RP15749-Support-Bushing/dp/B004A2X...

Edited by 61_Imperial 2015-09-24 3:19 PM
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wizard
Posted 2015-09-24 4:29 PM (#490556 - in reply to #490532)
Subject: Re: Figured out what the squeak was!



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Location: Southern Sweden - Sturkö island		It's only the Imperial that have those as standard to my knowledge. I have dwelled about installing them on my Saratoga '60.....
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LD3 Greg
Posted 2015-09-24 10:25 PM (#490582 - in reply to #490556)
Subject: Re: Figured out what the squeak was!


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Location: Ontario, Canada		Sven, I installed them on a 58 Dodge chassis. It took a lot of carefull measurements and jigging because I had to remove the axle brackets from the Imp. axle. Imp axles have a wider track and I think spring centres.

The bushings were a common size in those days.

I didn't keep the car very long and I didn't get noticeable improvement in the handling. But, I wasn't street racing the car either!

Greg



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KcImperial
Posted 2015-09-24 11:57 PM (#490585 - in reply to #490532)
Subject: Re: Figured out what the squeak was!



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Location: Kansas City, KS		I swapped the rear in one of my Imperials for a later model unit and didn't bother putting those arms back on.
I didn't notice any difference in handling without them but as Greg said above, I wasn't street racing the car either!
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61_Imperial
Posted 2015-09-25 3:33 PM (#490624 - in reply to #490532)
Subject: Re: Figured out what the squeak was!



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Location: Georgetown Texas		Who street races 5000 pound imperials!? not me!
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wizard
Posted 2015-09-25 3:52 PM (#490625 - in reply to #490532)
Subject: Re: Figured out what the squeak was!



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Location: Southern Sweden - Sturkö island		The purpose of that system is to avoid that the rear axle turns during acceleration. That gives a totally smooth ride during full open throttle instead of the wheel hop that we know exists in the lower class cars.
So, it's more a comfort thing than a street race thing. For street race, just add a pair of sturdy traction bars
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61_Imperial
Posted 2015-09-25 4:11 PM (#490626 - in reply to #490625)
Subject: Re: Figured out what the squeak was!



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wizard - 2015-09-25 3:52 PM

The purpose of that system is to avoid that the rear axle turns during acceleration. That gives a totally smooth ride during full open throttle instead of the wheel hop that we know exists in the lower class cars.
So, it's more a comfort thing than a street race thing. For street race, just add a pair of sturdy traction bars :)


Lower class cars, I had to laugh! Ill weld it up, spend the $200 and get me a nice glass of wine and a cigar lol
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