I would like to thank my newly appointed sales staff, Roy and DVS1 for answering some questions for me.
I'm putting in a close ratio trans Roy built for me, so I'm in the middle of a wrenchfest.
If anyone wants more info, send me an E-Mail and I will answer any questions you may have. I won't go into any further datail in this forum.
I use Super Oillite SAE 863 for the uppers and High Strength Alloy 954 for the lowers. When the fit up is correct they should last a good long while. They are a good, sound compromise. If you had problems with them, I'll bet the fit between the king pin and the bushing were way off. Or they were using junk bushings or both. The stock king pin bushings are bronze and they last for years, that's because they fit right.
I can build them with roller bearings, no big deal except the cost. Heat treating and grinding time would put them out of reach for most. The cost of the bushing is half compaired to roller bearings. When the bushing wears out that's all that wears, not the king pin. When it comes time to replace the roller bearings the king pin will be worn, maybe not bad enough to need replaced, not this time but it will.
Another issue is maintenance, or the lack there of. Unless they have a real good way to seal the roller bearings and your not taking them apart and cleaning them real often and greasing them, they will fail. When the bearing fails and you don't notice and fix it right away, kiss the king pin good by.
Thanx to everyone for looking and taking an intrest
Roy, DVS1 the check is in the mail