Man I guess Claytons has some stress on it...

[faststang1]

Shear strength of a 9/16" grade 8 bolt > 20,000 lbs. I dont think it will fail as long as it doesnt not have much wear (i.e. inspect every year and replace when there are signs of wear).

I agree,I was looking in my larwson mag and they make grade 8 bolts that are stronger than ur normal ones..they say 30%...I have never seen a jeep fail with one upper arm yet...if people run around with a 3 link like rockkrawler and it never fails I think we should be ok...iron rock run's one upper aswell!!!

[quadratokn]

since i can post my ow post one question whats thaw length of claytons upper control arms at their shortest?

about 14 3/4"

I just measured mine, and minused the distance of threads showing.

[quadratokn]

pulled one of my UCA bushings today taking some measurements, looks like its been under a ton of stress the whole time its been used....Not cracked but deformed.

Aren't people replacing the upper CA-to-axle bushings with johnny joints? Thats what I did.

[jclaudii]

bringing up this thread again...I have read in various places that Moog part k3166 is a replacement for the upper control arm bushings.

http://shop.advanceautoparts.com/web...5_714854695___ has these for 23 bucks in a "kit" so there a bit more than $11 each! that is awesome price which is a tad cheaper than the Napa one posted, but not sure if fitment is the same. any ideas?

Thanks!

[AgitatedPancake]

Nice that's not bad at all! I got to RE because theyre right down the road from me.

http://rubiconexpress.com/BuilderPar...Pb&part=RE3782

http://rubiconexpress.com/BuilderPar...Pb&part=RE3701

[jclaudii]

I guess those fit the WJ fine...I still can't find much info on if the ZJ and WJ are interchangeable or what the difference is if any.

[ArloGuthroJeep]

I always buy ZJ bushings. Kolak says there is a slight difference. Unnoticeable to me though.

[iluvtruenos]

Part number K3166 is TJ rear upper control arm bushings.

Paired side by side to the real ZJ UCA bushings, they're much stronger, and have less deflection.

OD and ID is the same, it's just the rubber is much stiffer.

[cLAYH]

I'll have to check those out. When I was in Moab I had a broken front UCA bolt(axle end) from the bushing being damaged. Fortunatly the NAPA there had some in stock. The hole in the arm was a bit oblonged as well so I drilled it and the bushing out to the next size SAE bolt. That bushing wasn't fun to drill out!!!

[AgitatedPancake]

Clay, you can get the currie hard joints to fit into the UCA mount with options for a 7/16" or 1/2" bolt hole

[cLAYH]

I was considering that as well but I wonder about the wisdom of not having something with a bit of "give" up there.

Are you running them, or anyone else? Does it make the ride noticeably harsher on rough terrain at speed?