XJ valving recommendations

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SByota

Senior Member
Jul 16, 2003
312
71
28
Looking for a little guidance on the valving for my XJ build.

1997 Jeep Cherokee

Front Suspension

Long arm 4 link with panhard bar about 10" travel with single 2.5 King smooth body. 235 in/lbs springs. Tall prothane bump stops inside the spring. Working 4x4 on 35" tall tires.

Rear suspension

Deaver G9 springs, extended shackle, 14" King 2.5 smooth body shock. 2.0 2" travel air bumps. 12"ish travel.

It will have a full T&J cage, roof rack and a full size spare mounted to the rear bumper.

Very similar to a Jeepspeed, but won't be beat nearly as hard. Built to be a kind of do all rig, something to go to the races and camping in. Able to move along quickly, but I know it's not a race truck. I have rebuilt plenty of shocks and have no problem swapping shims out. I'm willing to work on it, just looking for some input on a starting point. I'm willing to sacrifice some big hit performance, to gain a better ride at slow to medium speed. Let's be honest, a 4.0 won't push 35's very fast

My thought on a starting point.

Front Compression
1.75 .010
1.30 .015
1.75 .010
1.60 .010
1.45 .015
1.30 .015
1.15 .015

Front rebound
Straight .012 stack

Rear compression
Same as front

Rear rebound
Straight .008 stack
 

N_Olsen178

Junior Member
May 23, 2012
9
0
1
Reno, NV
I can't help with valving, but any pictures of the jeep? Ive got a 98 that I'm trying to set up to be similar to yours.
 
Last edited:

SByota

Senior Member
Jul 16, 2003
312
71
28
Never valved a jeep before but that sounds like a good start, might need to slow the rebound down a bit in the rear too. Also have at least one bleed screw open, maybe even 2
I was thinking 2 bleeds open to start. As far as the rear rebound, your thinking more like a .008/.010 combo stack? I was always under the impression that rear leaf valving was super light rebound to help the suspension extend. I'm a rookie at this just trying to expand my knowledge and foster conversation.
 

pcoplin

Member
Apr 12, 2015
35
0
6
Are they emulsions? If so, bet you could stiffen up the cover shims a little.

Sent from my SM-G930V using Tapatalk
 

SByota

Senior Member
Jul 16, 2003
312
71
28
Are they emulsions? If so, bet you could stiffen up the cover shims a little.

Sent from my SM-G930V using Tapatalk
They are 2.5 with resis, bottom mount piggyback on the fronts and top cap mounted on the rear.
 

SByota

Senior Member
Jul 16, 2003
312
71
28
After much reading and research, I think I am going to change the .010 compression shims in the stack I posted to .012's
 

SByota

Senior Member
Jul 16, 2003
312
71
28
After much reading and talking to people, I went with 15's in the front and 12's in the back on the compression side, still using the stack I posted. Getting the front end mocked up now. For anyone who needs help with nitrogen, I have a nitrogen bottle and fill
station now. Located in Ventura.
 

SByota

Senior Member
Jul 16, 2003
312
71
28
Latest Valving
Front

Compression

1.75 .015
1.30 .012
1.60 .015
1.45 .015
1.30 .015
1.15 .015
1.00 .015

Rebound .012 stack
3 bleeds open

Rear
Compression

1.75 .012
1.60 .015
1.45 .015
1.30 .015
1.15 .015
1.00 .015

Rebound
.008 stack


Previous compression

1.75 .012
1.30 .012
1.60 .012
1.45 .012
1.30 .012
1.15 .012
Yes I forgot the last shim
3 bleeds open



Rear has 4” travel 2.0 bump stops with 50 psi in them.

I’m happy with the front.

The rear still needs work. My first attempt was too soft everywhere, like way too soft. Me leaving off the last shim definitely wasn’t helping.

I pulled them apart and put in the latest stack. Way better on everything but small stuff. I already have all the 3 bleeds open.



Maybe a combo .012/.015 stack? Back to a flutter?
 

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