OME/Bilstein

If I added 3 clevis nuts on each side, would you recommend getting a set of rear iso to level it ?

jeeplib05 said:

If I added 3 clevis nuts on each side, would you recommend getting a set of rear iso to level it ?

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Yes if you add 3/8 inch clevis in front it will be higher , so add one per side upper iso to level it out. This will put you at 22.0-22.25 when settled in

tommudd said:

Yes if you add 3/8 inch clevis in front it will be higher , so add one per side upper iso to level it out. This will put you at 22.0-22.25 when settled in

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Thanks Tom
I've ordered everything I need for the lift
Very excited about installing it

mindbomb said:

Why not add plates and Clevis ring to front for extra 1/2"?


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Clevis and top plates would add more than 1/2 inch just for clarification
3/8 inch clevis adds 3/4 inch
1/4 inch top plate adds 1/2 inch
both together add 1.25 inches

tommudd said:

Clevis and top plates would add more than 1/2 inch just for clarification
3/8 inch clevis adds 3/4 inch
1/4 inch top plate adds 1/2 inch
both together add 1.25 inches

Click to expand...

Got it
I couldn't figure out before how many clevis it would take to get to 3/4 but now I know
I don't want to add the top plate and 3/4 clevis just because I don't want to worry about cv's and such right now
Thanks for the info

jeeplib05 said:

Got it
I couldn't figure out before how many clevis it would take to get to 3/4 but now I know
I don't want to add the top plate and 3/4 clevis just because I don't want to worry about cv's and such right now
Thanks for the info

Click to expand...

3 conduit nuts OR just measure 3/8 of an inch

tommudd said:

Clevis and top plates would add more than 1/2 inch just for clarification
3/8 inch clevis adds 3/4 inch
1/4 inch top plate adds 1/2 inch
both together add 1.25 inches

Click to expand...

never understood why clevises and plates add X2 of their height to the lift, can you explain?


also another Q - for going with the OP Bilstein configuration - does one need to also buy a bushing kit for those shocks?

mindbomb said:

never understood why clevises and plates add X2 of their height to the lift, can you explain?


also another Q - for going with the OP Bilstein configuration - does one need to also buy a bushing kit for those shocks?

Click to expand...

I don't believe you NEED a bushing kit per say
But I'm sure it makes things easier and more snug
I plan on just using washers though

mindbomb said:

never understood why clevises and plates add X2 of their height to the lift, can you explain?


also another Q - for going with the OP Bilstein configuration - does one need to also buy a bushing kit for those shocks?

Click to expand...

Picture where the clevis attaches to the lower control arm - it isn't at the end of the LCA at the lower ball joint. If it attached there then there would be a 1-to-1 ratio; for example, if you added a 1/4" top plate you would get 1/4" of lift.

But since the clevis attaches to the LCA at approximately the midpoint (halfway between the ball joint on the outside and the cam bolts on the inside) there is a doubling affect because the clevis is acting upon a lever. Here's a way you can see it in action:

Find a 12" ruler and set it on it's edge. Grab the end of it and lift it one inch off the table. The edge will be, well, one inch off the table (I'm not being a smart aleck - there is a point here!)

Now grab the ruler at the 6 inch mark and lift that portion under your fingers one inch off the table and look at the lifted end of the ruler. The end is TWO inches off the table even though you only lifted your portion up one inch - that's the lever effect and it's the same way the clevis acts upon the LCA. And explains why a 1/4" top plate gives you 1/2" of lift.

Here's a visual that somewhat explains the lever effect (this explains it from the standpoint of the lever's ability to do work.) But picture the fulcrum as the clevis with one end of the lever attached to a fixed point (the cam bolts on your KJ) and you can see how a small movement on one end generates much larger movement on the other:


Does that help?

Bob

TwoBobsKJ said:

Picture where the clevis attaches to the lower control arm - it isn't at the end of the LCA at the lower ball joint. If it attached there then there would be a 1-to-1 ratio; for example, if you added a 1/4" top plate you would get 1/4" of lift.

But since the clevis attaches to the LCA at approximately the midpoint (halfway between the ball joint on the outside and the cam bolts on the inside) there is a doubling affect because the clevis is acting upon a lever. Here's a way you can see it in action:

Find a 12" ruler and set it on it's edge. Grab the end of it and lift it one inch off the table. The edge will be, well, one inch off the table (I'm not be a smart aleck - there is a point here!)

Now grab the ruler at the 6 inch mark and lift that portion under your fingers one inch off the table and look at the lifted end of the ruler. The end is TWO inches off the table even though you only lifted your portion up one inch - that's the lever effect and it's the same way the clevis acts upon the LCA. And explains why a 1/4" top plate gives you 1/2" of lift.

Here's a visual that somewhat explains the lever effect (this explains it from the standpoint of the lever's ability to do work.) But picture the fulcrum as the clevis with one end of the lever attached to a fixed point (the cam bolts on your KJ) and you can see how a small movement on one end generates much larger movement on the other:

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Does that help?

Bob

Click to expand...

I think you answered his question perfectly
Definitely interesting to learn about
Thanks for the new knowledge

Bob pretty much explained it to a "T"
This only happens on IFS suspension systems like the KJ/KK have

Thank you Bob! That's eye opening.
So much knowledge here it blows my mind.

I think I have a misunderstanding on where the clevis ring goes. I thought it is positioned on the top of the coilover assembly just above the spring below the top "ceiling" of the shock - the cam bolts.


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mindbomb said:

Thank you Bob! That's eye opening.
So much knowledge here it blows my mind.

I think I have a misunderstanding on where the clevis ring goes. I thought it is positioned on the top of the coilover assembly just above the spring below the top "ceiling" of the shock - the cam bolts.


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Click to expand...

LOST JEEPS • View topic - Clevis Lift How To
Take a look at this thread over on LOST
Give you step by step instructions on the install
The clevis nuts go at the bottom of the coil over
Also, here's a picture

Just to clarify my earlier post...

The clevis is actually only about 1/3 of the way in from the ball joint rather that the 1/2 way in that I mentioned earlier so the analogy isn't exactly like the ruler example I gave. The principle still stands though :waytogo:


Bob

Finally received all of the stuff I need for my lift !
Can't wait to install it all, hopefully within the next couple weeks..

no hockey pucks?

You will also need new front upper shock mounts as well.

uss2defiant said:

no hockey pucks?

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I have them just forgot to throw them in the pic

renegade 04 said:

You will also need new front upper shock mounts as well.

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Hm, wasn't aware of that

Why the need for New Upper Shock Mounts?