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 1Likes
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1
Post By Tom Kirkham
08-18-2013, 11:51 AM
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CC Member
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Join Date: Mar 2003
Location: Clarkston,
MI
Cobra Make, Engine: Kirkham KMPS 033 FIA 289
Posts: 35
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Not Ranked
Transverse Leaf Spring Rear Ride Height
I have a transverse leaf spring cobra and I wanted to know how can I increase the rear ride height about 1/2 inch to 1 inch? My feeling is that I am going to need a new rear leaf spring, but maybe there is an adjustment that can be done. Any input would be great. Thanks in advance
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08-21-2013, 03:00 PM
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CC Member
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Join Date: May 2004
Location: Ft Myers,
FL
Cobra Make, Engine: genuine 289 cobra (cox 6013)
Posts: 83
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Not Ranked
Quote:
Originally Posted by Swanny80
I have a transverse leaf spring cobra and I wanted to know how can I increase the rear ride height about 1/2 inch to 1 inch? My feeling is that I am going to need a new rear leaf spring, but maybe there is an adjustment that can be done. Any input would be great. Thanks in advance
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Only way is to bend the main leaf 1/2 inch
Bernie |
08-21-2013, 03:50 PM
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CC Member
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Join Date: Nov 2003
Location: New Britain,
CT
Cobra Make, Engine: Size 10 Feet
Posts: 3,021
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Not Ranked
Sometimes shops that service large trucks can arch and temper leaf springs. If the rear configuration is anything like the front, I suspect that you'll need to modify at least 3 leafs.
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08-21-2013, 08:24 PM
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Senior Club Cobra Member
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Join Date: Sep 2000
Location: Holderness, NH, US of A,
NH
Cobra Make, Engine: CSX 4772 old iron FE
Posts: 5,499
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Not Ranked
They can have the stack of leaves pulled apart and put back together with one or more leaves reversed. The other solution is a spacer block between the spring stack and its mount. If they are new they will settle with use and it's nice to be able to adjust the height back with the block.
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08-21-2013, 08:32 PM
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CC Member / Sponsor
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Join Date: Jan 2002
Location: Provo,
UT
Cobra Make, Engine: HiTech Legends GT500
Posts: 1,359
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Not Ranked
The leaf spring will need to be re-arched.
The leafs are already flipped to give the most ride height.
Putting a block between the springs and the frame will lower the ride height.
Last edited by Tom Kirkham; 08-21-2013 at 08:35 PM..
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08-21-2013, 08:58 PM
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CC Member
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Join Date: Mar 2003
Location: Clarkston,
MI
Cobra Make, Engine: Kirkham KMPS 033 FIA 289
Posts: 35
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Not Ranked
Exactly. Thanks everyone, that is what I figured was to pull the leaf and get it re-arched or replaced. Talked to a builder here in SE Michigan (Tom K you probably know who it is) and suggested to see how much arch would be needed to install Teflon spacers in a couple of the leaf ends while the suspension is dropped to get an idea. It would only be temporary, but could give an idea on amount arch that needs to be done. I guess the Triumph guys do this with their springs for ride height adjustments. Thanks again,
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08-21-2013, 09:02 PM
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CC Member
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Join Date: Apr 2005
Location: Tucson,
AZ
Cobra Make, Engine:
Posts: 5,391
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Not Ranked
Quote:
Originally Posted by Swanny80
I have a transverse leaf spring cobra and I wanted to know how can I increase the rear ride height about 1/2 inch to 1 inch? My feeling is that I am going to need a new rear leaf spring, but maybe there is an adjustment that can be done. Any input would be great. Thanks in advance
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Just curious but is the car so low that it bottoms out?
I think they look best when they sit low. Just my opinion of course.
Larry
__________________
Alba gu brąth
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08-22-2013, 07:04 AM
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Senior Club Cobra Member
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Join Date: Sep 2000
Location: Holderness, NH, US of A,
NH
Cobra Make, Engine: CSX 4772 old iron FE
Posts: 5,499
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Not Ranked
Oops I was adjusting you the wrong way. We have used eccentric adjusters on the ends of the springs that can be used to adjust camber and height at the same time.
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08-23-2013, 01:23 PM
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CC Member
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Join Date: Jan 1999
Location: Bakersfield,
CA
Cobra Make, Engine: HI-TECH 289 FIA
Posts: 363
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Not Ranked
Removing the rear spring is a MAJOR PITA. It requires removal of the interior, rear bulkhead and gas tank just for access. I had mine re arched and the result was less than I had hoped. You have to reassemble everything and drive it for a while to gauge the result.
An alternative is to fit 63-67 Corvette air shocks (Monroe #MA785). the top is a bolt on and the bottom requires only to shorten the mounting tube (saws all).
Very good for travelling with stuff in the trunk since it is variable.
Picture shows part to remove. Bolt sizes, travel and clearance is all good. Not too expensive either.
__________________
fiaroadster
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08-24-2013, 10:21 PM
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CC Member
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Join Date: Mar 2003
Location: Clarkston,
MI
Cobra Make, Engine: Kirkham KMPS 033 FIA 289
Posts: 35
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Not Ranked
Great information. The only issue that I see is that the Monroe MA785 shock only has an extended height of 14". When the springs fully sag down, I have a distance of 16.5". I might try a set of coil overs, not sure if that will work. Other than that, its pulling the spring out and getting it re-arch. Thanks!
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09-01-2013, 09:59 PM
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CC Member
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Join Date: Mar 2003
Location: Clarkston,
MI
Cobra Make, Engine: Kirkham KMPS 033 FIA 289
Posts: 35
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Not Ranked
Just as an FYI, I went with a set of QA1 DS 501 coil overs with 12inch springs (85lbs springs) and it seems to help. I eliminated the wheel scrub and increased the ride height. The ride is a little stiff, but that is to be expected. We shall see how it goes.
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