PowerTrax No Slip Differential
#31
#36
#37
I called them in Dec about one for my 9&3/4 and they said it should be avail in the spring of this year. Who knows. I had a ranger before my F150 and I had one of the old-style ones they make in the 7.5 rear, i loved it. I never really noticed the bad behavior problems people often complain about in the corners. As soon as they come out with it, I'll have one. Well worth the money. I will NOT be puttin one in my front 8.8 although they said that one will be avail at the same time as the 9&3/4 and they will offer them in a kit or seperately.
#38
#39
Well, I finally got my powertrax no-slip and took a shot at installing it this afternoon.
Very smooth install. Haven't got to drive it yet as I ran out of time and I wanted to give the silicone sealer plenty of time to set up before I added the diff lube. Nothing worse than leaks!
Couple of minor things to be aware of before getting started:
1 - My '97 calls for 75W140 synthetic gear lube. This isn't too common around here, I wound up locating an amsoil rep to get some @ $12/ qt. Ford wanted $17/qt for the ford part. None of the auto parts stores I called carried it.
2 - Have a good 3/8 drive 8mm 6pt shallow socket. I broke a 1/4" drive crapsman trying to remove the pinion shaft retaining bolt. I only mention this because 8mm isn't a particularly common size in 3/8 drive and isn't included in too many sets.
After wasting an hour chasing down the snap-on guy to buy the aforementioned 8mm socket everything went well. Actual install was only about 15 minutes. Total time was about 2-3 hours which included jacking, blocking, draining, cleaning up the sealing surfaces etc. Little grief with the final checkout step. Supposed to preload one wheel in a given direction and then try to rotate the other wheel in the opposite direction. Instruction say it should rotate freely. I found that it took a pretty good effort to initially break it loose and then it would rotate stiffly.
Very smooth install. Haven't got to drive it yet as I ran out of time and I wanted to give the silicone sealer plenty of time to set up before I added the diff lube. Nothing worse than leaks!
Couple of minor things to be aware of before getting started:
1 - My '97 calls for 75W140 synthetic gear lube. This isn't too common around here, I wound up locating an amsoil rep to get some @ $12/ qt. Ford wanted $17/qt for the ford part. None of the auto parts stores I called carried it.
2 - Have a good 3/8 drive 8mm 6pt shallow socket. I broke a 1/4" drive crapsman trying to remove the pinion shaft retaining bolt. I only mention this because 8mm isn't a particularly common size in 3/8 drive and isn't included in too many sets.
After wasting an hour chasing down the snap-on guy to buy the aforementioned 8mm socket everything went well. Actual install was only about 15 minutes. Total time was about 2-3 hours which included jacking, blocking, draining, cleaning up the sealing surfaces etc. Little grief with the final checkout step. Supposed to preload one wheel in a given direction and then try to rotate the other wheel in the opposite direction. Instruction say it should rotate freely. I found that it took a pretty good effort to initially break it loose and then it would rotate stiffly.
#42
#44
Had it on the street for the first time today. First impression; in normal driving I couldn't tell it was there. An occasional ratchet, mostly in low speed, parking lot type of situations. After driving a bit more I began to notice it somewhat . Definitely not in a bad way though. I can tell a difference making turns away from a standstill. Much more tendency to chirp the inside tire (in either direction). Guess that is the difference between applying power to the inside tire versus the open diff applying power to nowhere. Doesn't seem to take much spin from the inside tire before it starts driving the outside tire. Feels like you are always being pushed forward. No need to let off the gas to allow a spinning tire to hook up. Feels nothing like the open diff as far as just wanting to endlessly spin the inside tire in a right turn and go nowhere! Tried putting one tire off the edge of the road in the grass and pulling away from a stop. It would actually bark the tire that was on the pavement, instead of spinning the tire in the grass, just as powertrax says!! If it continues to perform like this, and isn't drastically different on slippery roads, I will be very happy.