Control arm bolt question

Menzenski · Jul 27, 2006

Did any XJs come with hex-head upper control arm bolts (axle side of the control arm)? If so, what years? I had to really mutilate all four control arm bolts to get the D30 out of my 1990 XJ. I think I'll just buy new LCA bolts from the dealer, but I want to get hex-head bolts for the uppers instead of the stock Torx heads.

If no XJs came stock with hex-head bolts, does anyone know offhand the size/pitch/length of the bolts I need?

OverlandZJ · Jul 27, 2006

Not all came from the factory with Torx head bolts, i have factory hex head bolts in mine. Offhand i dont remember if mine are original to my XJ...or came from an axle i pulled at a u-pull. I usually keep spare bolts in bottom of tool box.

titan4u2c · Jul 27, 2006

Not sure about years but my '92 just had upper axle side bushings put it and I think my mech used a torx head and a 15mm wrench to loosen and tighten them. I'm not sure on the torque settings, he just tighten them till stop but they seem to be doing fine. As long as the diameter part that goes in the sleeve is the same, I don't see why you can't use whatever head you choose? HTH

Wayne Sihler · Jul 27, 2006

On my 96 all the control arm bolts were hex head.
Wayne

87manche · Jul 27, 2006

on my 87 they were all hex head, 21MM LCA, 15 MM UCA.

Menzenski · Jul 27, 2006

Awesome; so I can just buy them from the dealer. That makes it easy. Thanks guys.

IntrepidXJ · Jul 27, 2006

i just bought a box of hex bolts from mcmaster that were the same size and grade, just with the hex head. much cheaper than going to the dealer for bolts.....

Menzenski · Jul 27, 2006

What grade are they, five? If I had gotten them out in one piece I would have just gone to a home improvement store and picked up some hex heads, but they're pretty messed up. I cut them in half with my thick grinding wheel, since I was out of cutting wheels, and they sorta melted all funny where I cut them.

Though I suppose I could just measure the width and length of the threadless part, and just buy hex-heads. Maybe I'll check that out first; I kinda need them in a hurry so I'd prefer not to order them.

IntrepidXJ · Jul 27, 2006

i don't remember the size off the top of my head, but i should still have the box in my garage, and can check for you when i get home and post it up here

SuperRA · Jul 27, 2006

Mambeu said:
What grade are they, five? If I had gotten them out in one piece I would have just gone to a home improvement store and picked up some hex heads, but they're pretty messed up. I cut them in half with my thick grinding wheel, since I was out of cutting wheels, and they sorta melted all funny where I cut them.

Though I suppose I could just measure the width and length of the threadless part, and just buy hex-heads. Maybe I'll check that out first; I kinda need them in a hurry so I'd prefer not to order them.

I have torx head in my 87, only on the front of the UCA. I currently have them out of the jeep, so when I get home I can measure them all.

Menzenski · Jul 28, 2006

IntrepidXJ said:
i don't remember the size off the top of my head, but i should still have the box in my garage, and can check for you when i get home and post it up here

I took my broken bolts down to Lowe's today and picked up some grade eight replacements. The bolts I got for the UCAs appear to be 1/16" too wide to fit into the bushing (should have gone with 3/8" instead of 7/16", I guess), but the new LCA bolts look like they'll be okay.

cwlongshot · Jul 28, 2006

The stealership prices are on CA bolts is OUTRAGOUS!!! Something near $10 each then a couple bucks each for the nuts!!!

They are grade 8.8 or 10.8 metric, I would just go to a good hardware store and buy Grade 8 bolts, 9/16 for the large size and ...shoot size on smaller escapes me...
Just bring the smaller bolt with you and eyeball it. I have done this MANY times just buy good fasteners, NOT HOME DEPOT/LOWES crap!!! MUST be GRADE 8. You'll be fine and save some seroius coin!!!

CW

SuperRA · Jul 28, 2006

Ok, I measured my bolts here are the dimensions.

Front UCA - M10 - 1.5 x 70mm Torx head
Back UCA - M10 -1.5 x 80mm Hex Flange head
LCA - M14 - 2.0 x 110mm Hex Head Flange
(2.0 thread pitch based on measurement since my thread gage didn't go that high)
Bolts are 10.9 grade.

HTH

Control arm bolt question

Menzenski

Formerly Mambeu

OverlandZJ

NAXJA Member # 101

titan4u2c

NAXJA Forum User

Wayne Sihler

NAXJA Member

87manche

NAXJA Forum User

Menzenski

Formerly Mambeu

IntrepidXJ

NAXJA Member #647

Menzenski

Formerly Mambeu

IntrepidXJ

NAXJA Member #647

SuperRA

NAXJA Forum User

Menzenski

Formerly Mambeu

cwlongshot

NAXJA Forum User

SuperRA

NAXJA Forum User

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