After seeing WC's quad VTS I decided to try it. I started with the original slipper (non-VTS) and it was totally unacceptable. I upgraded to a cDiff and it was huge improvement. But with the release of the VTS and now the quad mod I wanted to try it to compare to the cDiff. I am not worried about losing power because of slippage (truck is already over powered) but I wanted to see how adding the extra surface area/friction material would smooth out the diff action. Also I had all the parts laying around so I went for it. It went together pretty easily, but the tension nut was a concern. With the added thickness of the extra pad/spacer you have to run the nut at the very end of the shaft to get the right slippage and the locking material of the locknut is not engaged. I thought about using red Loctite, but every time you make an adjustment you would break the bond. So came up with this, I used a small 3mm locknut turned upside down, so the locking material gets threaded on first. To ensure I also get metal to metal (thread) engagement I countersunk the spring retainer washer that allows the nut to sit much lower giving me full engagement and plenty of adjustment range.


Countersunk spring retaining washer on the left.


Modded washer on the left lets the nut sit much lower.


Quad VTS installed, tension nut fully engaged with plenty of room for adjustment.


I tried two thin 3mm nuts but it compressed the spring too much and reduced the adjustment range.


One thing to watch for when going quad is to be sure the top plate fully engages all the slipper spacers.


Parts needed to go quad, one extra spacer and pad.