tr6nut

I'm installing a set of J&M [hotpart.com] LCAs (poly bushings) and I've run into a problem. When I try to torque the bolts to the factory spec of 129 ft/lbs, I can't get the front bolts to go that high. I can torque them to about 115 ft/lbs, but over that and it appears that the inner sleeves are crushing. Anybody else have any experience with these?

Thanks

owero01

Shouldn't it be 29lbs?

tr6nut

No, I have the factory manual. Its 129 for the stock LCAs. However Edelbrock says to use 70 ft/lbs on their LCAs. The J&Ms didn't come with any specific instructions.

howarmat

129 is factory spec and you should try to get it there.....but if you can only get 115 without doing damage and using locktite you might be OK

TJ

tr6nut

I would send a e-mail over Brain Croutcher and let him know the problem your having and see what he says Brain is a good guy from HP's, awhile backhewanted me to test out thier newpowder coated ajustableLCA brackets fit wise etc (7.5)at the time and was going to comp meon a free set for doing itbut I was going out of town at the time.

The torque is 129ft/lbs I haven't read anyone else having this problem and are very happy with these LCA's. I have a set here ready to go on myself.

Post back and let us know the out come.


e-mail
brian@hotparts.com

tr6nut

I emailed him and it appears that the inner sleeves sent with my LCAs were the wrong ones. Brian is sending me a new set of sleeves.

Hugh

TJ

Thats good to hearI will check my sleeves,I went with these because of there patent 3 pieacepoly ball bushing setup andI read a lot of posts of guyswho are very happy with these LCA's incase you didn't see this info here some info on the J&M LCA's or for others considering.



New Product Release:

2005-2007 Lower Control Arms:

The control arm bushings found in the Mustang automobiles can have a significant impact on the vehicle’s ride, comfort, handling, acceleration, noise and vibration. When the car leans (i.e., rolls) in a turn, one side of the chassis moves upward relative to the rear axle, the other side moves downward, and the control arms must twist to allow for the axle to articulate. This causes the control arm bushings to bind. If this bind becomes excessive, it will raise the rear wheel rate and produce sudden, uncontrolled, undesirable changes in handling (e.g., snap oversteer).

Ford minimizes this suspension bind by using compliant rubber bushings in both lower control arms. These relatively “soft� bushings help accommodate the necessary motion of the control arms during body roll. However, the rubber bushings do not provide much in the way of forward and aft support, which can cause wheel hop during hard acceleration and braking.

It has become common practice to replace the stock rubber control arm bushings with solid or two piece polyurethane bushings to resolve the shortcomings of the soft rubber bushings. Hard polyurethane bushings eliminate wheel hop, reduce axle deflection, and improve rear straight line grip. However, the downside of common aftermarket bushings such as delrin, steel, stiffer rubber, solid or two piece polyurethane bushings is they prevent the necessary movement of the control arms during body roll, which in turn produces significant binding in the suspension when the vehicle is cornering. The polyurethane bushings also place unnecessary high stresses on the torque boxes, which are the attachment points for the control arms to the chassis. Standard aftermarket control arms do not allow for rotation of the control arm during cornering because of the stiffness of the bushings.

The Solution:

J&M Products designed and built a tubular lower control arm which will eliminate the unwanted uncontrolled control arm flex. Round tubing is harder to work with but has many other advantages over square or rectangular tubing. It is stronger in bending, torsion, and also lighter than square or rectangular tubing.

J&M Products then solved the shortcomings of the factory rubber and other aftermarket polyurethane and stiffer rubber bushings. J&M Products accomplished this with our Patent Pending 3 piece Poly-Ball bushing combination. By spending countless hours looking and dissecting the geometry and the need of the rear suspension we developed a bind-free Poly-Ball bushings set up. J&M Products incorporates a very hard inner polyurethane ball which is surrounded by soft socket outer cups. This combination allows the bushing to articulate like a spherical bearing during cornering but the hard inner ball does not allow the bushing to deflect during acceleration giving you great traction during acceleration like solid bushings but remains completely bind free during cornering for great predictable traction in the corners.

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On line Instructions also

http://www.stangnet.com/Tech-Article...ll-070323.html