Weight on rear axle....Is it to limit wheel hop?

[MyZinc03]

I put a flomaster cat-back on my car and had to take off that weight that is bolted to the middle of the rear axle because one of the pipes would not clear it. Anyone know what this weight is for. I drove my car after removing it and noticed no vibration at any speed. I did not go over 100 though. Here is what I did notice. My wheel hop issue has gotten worse. If I floor it at about 20 mph in first, the car will start to break lose at about 5krpm. At this point the hop is worse than it was before. There is another factor here though. At the same time I removed the weight I also checked my tire pressure. Found all tires to be at 28 psi so I bumped them all to 32 psi. I know this will make the hop worse but not sure how much. The real point to this thread is to find out what that weight is for and if it really would limit wheel hop.

 

[Silver 03 Cobra]

It came out on the 01 Cobras as part of the vibe fix. It is a vibe dampener.

 

[toofast4u]

Mjchip removed his and said he saw no difference in vibration. The weight is 7.5 Ibs and it is suppose to be a vibration dampener like Silver03Snake said.

http://www.svtperformance.com/forums/showthread.php?s=&threadid=20728

 

[hwystr]

The pinion damper dampens driveshaft vibrations due to driveshaft imbalance and run-out. Some cars may get by without the damper (if they have low imbalance and run-out) others less fortunate will have vibrations/moans set-off at different speeds - there is only one way to find out how your car will react.:thumbsup:

 

[matt lankford]

thats another one of fords great fixes for one of the 99s many problems i got to enjoy. it started life as a tsb

 

[Snoker]

I also removed the differential dampner upon installation of my flowmaster system. Did same with 01 Cobra I had. I no vib eproblems with either. I have the dampner stored in a box in my garage. Saved me from having to loose another 7.5 pounds.

However, I am seriously considering a carbon fiber driveshaft. Pricey, but less drvetrain weight and supposedly a much better balanced shaft.

 

[toofast4u]

I removed mine last night and did not notice any vibration or wheel hop difference this morning. That little weight is heavy for its size btw the bolts are 9/16.