U joint strap problem

[Dmichels]

I have snapped the small retaining bolts on the rear joint caps a few times. This has only happened a few time but I really was hammering it. I do not race the car and it was on street tires. I used grade 8 replacments. The car had worn out stock rear springs and have read that the rear can wind up and somehow the yoke contacts the cap. I don't quite understand that. I have since replaced the springs with MP HD ones if that has anything to do with it.  I never broke a u-joint. Moroso makes an aluminum u-joint cap that bolts threw the yoke anyone have experience with these?
Thanks Dave
mild 440 4 speed 4.10 posi small u-joint

[b5blue]

Got an adjustable snubber?    They help!

[Dmichels]

No snubber yet. Won't that bottom out on the street? THis is not a track car. Am I really twisting the rear so much that it is causing some type of u-joint binding?
Dave

[b5blue]

Snubbers were standard equip. for that reason. Adjustables' allow greater height to tighten down windup of the center section. I have this one on my car:
http://www.summitracing.com/search/product-line/mopar-performance-adjustable-pinion-snubbers
The screw up and down are really nice but more money also. (I had to cut mine down some to keep it lower as my car is stock also.)

[Cooter]

No snubber yet. Won't that bottom out on the street? THis is not a track car. Am I really twisting the rear so much that it is causing some type of u-joint binding?
Dave

Dave, believe it or not, you are harder on that car on the street than you EVEr will be at the track...Just FYI. BB/4-speed and Small U joint? Not the best set up BTW.

You'd be surprized at how much axle windup occurs when "Bangin' " gears.

[Dmichels]

Will this avle windup cause a u-joint bind? Is this the reason I am popping off the straps? I know the small u-joint is not the best but I am not breaking the joint, just ripping the straps off. I imagine that would happen with the big joint as well
Thanks Dave

[b5blue]

Yup, can't be certain in you case but sounds worth trying! I've run everything from 0-120 WFO banging my auto all over with no problem and am running the big/small U joint in the back on a 3.23 sure grip 8 3/4. 

[Dmichels]

I have some old  school traction bars should I bother with them or I better off with the adjustable snubber. I probally am not going to beat on the car now. I would not want to get rubber on the fresh paint
Dave

[b5blue]

Get the one that's screw type adjustable, they were not around 18 years ago when I did mine. 

[GreenMachine]

The pinion snubber does the same thing as traction bars. I would go with the pinion snubber. As far as the straps, the girdle that Moroso sells is supposed to be strong, but you could also use a U-bolt strap like alot of other makes. Either way you go you'll have to drill all the way through the bolt holes.