P&G and U-Joints in RWD rigs?

[TrikeKid]

I did a couple p&g's on my way home where it was feasible to do so tonight. Both were pretty smooth, but I noticed my driveline vibes a little more than normal when I got back onto the highway. It has always vibrated, combination of worn t-case and a questionable u-joint. I've got a new trans and case ready to go into the truck, so I'm going to put new joints in both ends of the drive shaft when I install that (wasn't going to put new joints in at $20 a piece to have the sloppy case output beat them to death). I'm wondering if anyone here that's P&G'd in a RWD/4WD vehicle has noticed increased wear on the joints? There are a number of places here where a P&G wouldn't even really slow you down if you time the hills right so I'd like to get into it a little more.

[Red]

If your u-joints are in good shape it shouldn't matter. All you are doing is accelerating/decelerating. Provided that there isn't any excessive slop in the drive train, it should be fine.

[TrikeKid]

Originally Posted by Red

If your u-joints are in good shape it shouldn't matter. All you are doing is accelerating/decelerating. Provided that there isn't any excessive slop in the drive train, it should be fine.

That's kinda what I figured, thanks.

[wagonman76]

Id think typical city drivers are worse on a driveshaft than you doing P&G.

[TrikeKid]

Originally Posted by wagonman76

Id think typical city drivers are worse on a driveshaft than you doing P&G.

I was worried about the bump starting mostly, most of the time I'm pretty smooth about it, but every once in a while it'll jump pretty hard.

[Red]

Originally Posted by TrikeKid

I was worried about the bump starting mostly, most of the time I'm pretty smooth about it, but every once in a while it'll jump pretty hard.

Yeah shock loading is bad....

Depending on your hardware, might not hurt a thing, but its not the path to long part life either