Old Man EMU 2.5" YJ to CJ Suspension Install - Page 7 - JeepForum.com
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Unread 08-02-2011, 10:22 PM   #91
85LaredoCJ7
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Nice.......who needs coil springs......

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Unread 08-03-2011, 03:17 AM   #92
Matt1981CJ7
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Quote:
Originally Posted by mvigo View Post
Matt,

under extreme compression don't you have other limiting factors such as your tire hitting your wheel well or your bump stops limiting you from buckling? This picture is about as extreme as I can get without rolling over...I have a Rubicon Express Extreme Duty 2.5" lift with a 1" body lift and swaybar disconnects...I suspect you would be able to get the same or possibly more...I scored 634 on the RTI ramp....
Agreed. But I think your picture (which is way cool, btw) illustrates what I'm talking about.

Look at your front shackle. It's nearly horizontal from the compression. It doesn't take much imagination to visualize how it would look if that shackle was mounted further back.

I don't mean to belabor the point, but I think the guys hoping to avoid moving the front shackles, while using the OME springs, are being a little lazy and foolish.

I could be wrong.

Matt
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Unread 08-03-2011, 06:46 AM   #93
commadore64
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Quote:
Originally Posted by Matt1881CJ7 View Post

I don't mean to belabor the point, but I think the guys hoping to avoid moving the front shackles, while using the OME springs, are being a little lazy and foolish.

I could be wrong.

Matt
Just asking questions and getting the facts before I dive off into the new suspension. I am rebuilding and/or replacing just about everything on my CJ-5... certainly not being "lazy" about anything... "foolish I could be wrong." Yeah, Matt, I think you are definitely wrong! This has been a great thread, thanks to all who have contributed, I have learned a lot… but come on don’t knock my head off for asking questions. If moving the spring mounts forward is the best thing to do, then that’s what I will do.

"lazy and foolish" my ***!!!
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Unread 08-03-2011, 06:59 AM   #94
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I think he was making a fairly general statement, no need to get upset. I believe the OME springs are roughly an inch longer than stock from eye to eye, and drilling out a couple rivets is simple in the scheme of things. No brainer imo. THIS DOESNT MEAN I DONT THINK YOU HAVE A BRAIN.
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Unread 08-03-2011, 07:17 AM   #95
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commadore64,

I meant no offense, nor disrespect, towards you, personally. I realize you are only gathering info.

I should have spoke more towards the self-proclaimed "experts", who are selling these setups as a direct bolt on to the CJ. I believe that advice is driven by the desire to sell more springs/kits, and not necessarily sound mechanical advice.

But, again, I'm just one man with an opinion.

Matt
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Unread 08-03-2011, 09:42 AM   #96
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Matt - Keep in mind you have stock shackles on there. Now imagine a 2" longer shackle (for 1" of lift) with either the stock mounting point or the rivet point 1" further forward. Both cases would still have the shackle at a less horiz. angle than yours because the spring can only get so long at it's flat-est flex. The rear is anchored.
Point being that when the stock shackle is used you may be best suited to move the mount forward, but folks with longer shackles have no need to. This is why we have conflicting reports of whether it needs done or not. Then on top of that some use the longer yj front springs while others use the rears all around. So an apples to apples scenario can't always be assumed.
So laziness and foolishness have nothing to do with it. A lazy person would just stick cj springs back on. A fool wouldn't do his research before purchasing parts.
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Unread 08-03-2011, 10:23 AM   #97
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Renegade82,

Good point about the longer shackles providing a less horizontal shackle position under compression.

Does the "Rock Equipment Granite Kit", have longer shackles included? It's difficult to tell from the picture, but I don't see any. If it doesn't, then I still think they are doing potential buyers a disservice by advertising their kit as a direct bolt-on.

The reason I chose to use the stock shackles is my research showed that a 2.5" lift on a CJ(which is truly what you get with the OME springs) was about the maximum lift you can use without running into steering geometry problems and possible driveshaft issues. I didn't want any addition shackle lift. I also like keeping as much original stuff on the Ol' Girl as possible.

The other thing to consider is that, even though the eye-to-eye length is just 1" longer on the YJ springs, they also have 8-10" more flex, which means they have a deeper arc, and the longest leaf is more than just an inch longer than stock. I wish I would have measure the actual arc with a flexible tape, before I installed them, to determine exactly how much longer they are when compressed.

Many ways to skin this cat, I suppose.

Matt
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Unread 08-03-2011, 10:28 AM   #98
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I am no suspension expert by any means and I do have a little longer shackles than stock and my Crabtree hangers are in the stock position. I don't know the length of my springs vs. Matt's. Having said that, this thread has been insightful for anyone looking to do a suspension lift whether it be OME or otherwise. If one were to decide on OME as the best way to go than this thread becomes invaluable.

So, with that said, keep up with the questions, offer insight and then come to your own conclusions! Thanks for starting it...
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Unread 08-03-2011, 10:49 AM   #99
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So what shackles are the best ones to get? I’m assuming the OK4WD kit has the shorter CJ shackles because they talk about having to move them an inch forward and cutting a notch in the bumper. I’m trying to do research “the right way” of doing the lift. I fear that I will be all done and wished I went with the longer shackles or visa versa. I’m not looking for the easy way at all. I am just looking for the best way of doing this.

Thanks again for keeping this a kick a** thread!
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Unread 08-03-2011, 11:01 AM   #100
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Quote:
Originally Posted by fcb212003 View Post
So what shackles are the best ones to get? I’m assuming the OK4WD kit has the shorter CJ shackles because they talk about having to move them an inch forward and cutting a notch in the bumper. I’m trying to do research “the right way” of doing the lift. I fear that I will be all done and wished I went with the longer shackles or visa versa. I’m not looking for the easy way at all. I am just looking for the best way of doing this.

Thanks again for keeping this a kick a** thread!
Going by the picture, I don't see any shackles in the OK4wd kit, but I haven't found their parts list, either.

If they don't include longer shackles, their advertising implies you can use the stock shackles without moving the mounts forward. I think that's a mistake, personally.

Matt

Edit: I just read the OK4wd instructions. Low and behold they DO instruct to move the shackle mounts forward. So, I guess we all agree that's the proper way to do it.

Sheesh....what the heck have we been debating for 2 pages?
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Unread 08-03-2011, 11:13 AM   #101
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Quote:
Originally Posted by Matt1881CJ7 View Post
I meant no offense, nor disrespect, towards you, personally. I realize you are only gathering info.


Matt
Thanks Matt, No harm, no foul... it was just a general question. I personally think that moving the hangers forward may actually contribute to the better ride quality which is what I am looking for. When all is said and done, my Jeep will probably see way more paved roads than trails, so the ride quality is the most important thing to me.

I would like to use Crabtree’s hangers, so it would be better for me to order everything piece-meal. With that said, does anyone know who has the best price on OME springs? I think Rocky Road has them for about $95 each… anyone find a better price?
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Unread 08-03-2011, 11:16 AM   #102
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They don't include the shackles in the kit. They recommend using the OE YJ shackle, which is 1" longer than a OE CJ shackle, resulting in an extra .5" of lift.........while keeping everything in geometrical order. This is what I am doing. I got my YJ shackles for free, took a wire wheel to them and some chassis primer and chassis black and they look brand new.
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Unread 08-03-2011, 11:36 AM   #103
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I really don't want any more that the 2.5" lift of the springs... can I use stock height CJ shackles (rears for example) with the OME springs?
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Unread 08-03-2011, 11:36 AM   #104
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85LaredoCJ7,

Isn't it amazing how easily you can make some of this 30-year old crap look nice?

If you realize a specific benefit to the longer shackles when you are done, I may go that route. Until then, I'm pleased with the way the stocks are working.

I'm still pacing the floor waiting for my last (2) shocks to arrive....

Matt
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Unread 08-03-2011, 11:38 AM   #105
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Quote:
Originally Posted by commadore64 View Post
I really don't want any more that the 2.5" lift of the springs... can I use stock height CJ shackles (rears for example) with the OME springs?
Yes
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