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Unread 09-25-2007, 08:24 AM   #1
CJSAMM
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1977 CJ5 
 
Join Date: Sep 2007
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What Shocks/How R Shocks Suppose to Work?

I have a 77 CJ-5, I just got this Jeep and I believe the prior owner did a conversion for the front(leaf spring over drive shaft). So the Jeep has a lift(I don't know height), I noticed big time that the front shocks were totally bottoming out if I go over any types of bumps.....even a 1 inch rock it would hit rock bottom. So the shocks looked slap wore out, so I went and purchased the new RS5000 Rancho's. I haven't installed these yet, but these seem very very soft like they are going to bottom out easy also.....has anyone else had this problem or know how I can fix it?
EDIT-- I just looked at a picture of a CJ7 on here that I think gave me my answer to my problems. Whoever did the spring/axel conversation maybe they did it wrong. The shock mounting bracket is at the top of my springs, not under or by the axle. Could this be the reason why my shocks would bottom out so easy, by not having enough clearance from top shock mount to bottom shock mount?

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Unread 09-25-2007, 10:14 AM   #2
JoonHoss
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the shocks need to be the correct length for the lift done. mounting points don't matter, (per se), just the correct length. sounds like perhaps your PO didn't change the shocks after lifting it, or installed the wrong length shocks after.

if you bought shocks based on model year/part number, and not the actual operating length, you'll likely have the same problem. you need the measurement between the mounting points, the type of mounting points (eye or stud mount), and then any decent parts guy can find you a shock that falls (basically) in the middle of that range.

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Unread 09-25-2007, 10:21 AM   #3
jeepdaddy2000
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You need to measure the distance between the shock mounts. This is your baseline measurement. Measure the distance between the axle and the bump stop. add an extra 3/4 inch and subtract that from your baseline measurement. This will be your collapsed shock length. jack the frame up till the axle(with the tires and wheels) is hanging by the springs. Measure the distance between shock mounts and add any estimated distance you might see due to articulation. This is your extended length. Call Rancho with these two measurements and they will tell you which shock will fit.
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Unread 09-25-2007, 10:31 AM   #4
CJSAMM
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So its better to measure from center mounting bolt to center mounting bolt while jeep is grounded......not suspended in air right? Then I should be able to take that measurement to "parts" guy and say I have a (for sake of conversation)14inch gap between center bolt to center bolt and I should fix my problem right and him give me correct shock size? Thanks for the help guys
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Unread 09-25-2007, 10:38 AM   #5
jeepdaddy2000
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Quote:
Originally Posted by CJSAMM
So its better to measure from center mounting bolt to center mounting bolt while jeep is grounded......not suspended in air right? Then I should be able to take that measurement to "parts" guy and say I have a (for sake of conversation)14inch gap between center bolt to center bolt and I should fix my problem right and him give me correct shock size? Thanks for the help guys
Not realy.....You need to take the measurements in my previous post to get an accurate extended and collapsed length. Vendors that carry aftermarket shocks will take these measurements and give you a part number of a shock that will fit.
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Unread 09-26-2007, 12:42 AM   #6
jeepdaddy2000
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Quote:
Originally Posted by jeepdaddy2000
Measure the distance between the axle and the bump stop. add an extra 3/4 inch and subtract that from your baseline measurement.
EDIT!!!!
You should subtract not add 3/4 of an inch. Otherwise your shock will be too long.
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