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Old 02-18-2014, 11:18 PM   #1
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Long leaf suspension

Friend pointed me to this which I never heard of. http://www.holbrookspecialties.com/longleaf.htm
This says they only make the springs for cjs. Has anyone done this for a yj? Can't seem to find positives or negatives. Can't really find much on the idea as a whole.

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Old 02-18-2014, 11:29 PM   #2
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Correct me if I'm wrong. I'm thinking this wouldn't work with the way they mount because to make the flex work you'd have to shorten your wheel base. I guess that's why people move the rear shackle mounts and do a stretch.

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Old 02-19-2014, 12:10 AM   #3
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Similar idea to when the toyota guys put the long chevy leaf springs in the rear. Your lift is coming from the relocation of the fixed spring mount allowing to run a flatter spring. Flatter springs can arch more = more flex. I like it for SUA applications, is try it if i was sprung under.
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Old 02-19-2014, 12:32 AM   #4
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Quote:
Originally Posted by Mbclark View Post
Similar idea to when the toyota guys put the long chevy leaf springs in the rear. Your lift is coming from the relocation of the fixed spring mount allowing to run a flatter spring. Flatter springs can arch more = more flex. I like it for SUA applications, is try it if i was sprung under.
Why can't I find anything on this? Do you know if it doesn't work as well? Seems cheaper and easier to do than a soa. Hopefully more people speak up. I definitely want to stay sua but my flex is lagging so just trying to gather research.
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Old 02-19-2014, 01:16 AM   #5
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You'll get more flex and I'm guessing the install is fairly simple. Cut off fixed spring mount, weld new ones a little further inward on frame, install new springs. I'm sure there's all the other little mods that come with a lift as well. Sounds like a really solid system. Have you looked at the toyota mod I mentioned? I have a few friends with toyota pick ups and have helped perform that mod a few times. Sounds like the exact same concept in a kit for a Jeep. Another issue is spring width, YJ springers are wider than CJ. Lots of CJ owners convert to YJ springs, possible the kit is upgraded to YJ style springs but if it isn't you have problem.
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Old 02-19-2014, 06:09 AM   #6
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You would have to extend the outer shackle mounts as well if you aren't using offset pins on the leaf springs. Seems like the shackle mounts moving further from the tire would make the approach, breakover, and departure angles worse.

In theory, it should give you a better ride and more flex. However, it is already possible to have a good ride and great flex with a quality leaf spring setup using the stock spring mounts.

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