I owe Rob a beer for having made a guess at the solutition to the loose pin issue.
Turns out that the pin being loose indicates that the roll pin has sheared off, and that is probably caused by fatally galled spider gears and PIN.
https://www.crossfireforum.org/galle.../DSCN31062.JPG
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Sadly the die is cast and since I do not know of spare internal rear parts, there is little to do. Iam just glad that mine has not yelled at me yet. I believe that the synthetic gear and phantom grip LSD had diminished my exposure to a rear gear failure, THUS FAR> I BELIEVE THAT IT IS COMING!!
WHen the car takes off, the spider gears do not turn unless there is a difference in the rear wheel rotational speeds. If the gears were welded the rear wheels are forced to rotate at the same speed. When I turn my drive shaft on the lift, both of my rear tires turn the same direction because of the spring loading of the P grip LSD. The wavetec that I made a deposit on will do the same thing because of its gearing arrangement.
When you turn the car or have one wheel going at a different speed -slipping- the spiders allow a difference in axle speeds. When one wheel spins on take off the spinning wheel is going at a greatly different speed and the spiders are whirrling way fast while carrying the torque of the rear wheel s, thus heating and wearing on the drive PIN. If your in snow and the speedo shows that your spinning ONE WHEEL at a speed of 20 MPH, one wheel is going zero while the other is going TWICE THE SPEED OR 40!!t
Back in the day the tires on your car were balanced on the car by spinning and the rears were driven in drive while one tire was sitting on a wheel while the other was going twice the speedo speed. THe shaking in the car was then tuned to a minimum shake. Positraction was tough as both wheels were clutched to turn the same direction and spinning was going to spin both wheels. THis is before the off car balancers were available, not counting the bubble balancers that did not do a dynamic balance and cars used to shake AND the tires were belted not radials and often rather lumps.
If we all behaved and used the traction control, the spiders would never fail as the tc cuts the engine power and the rear brakes clamp down on the spinning wheel that is going the fastest. Life is not played that way.
Woody