Driveshaft Q

[Paul Workman]

Suppose you're pulling the drive shaft and (DOH!) you remember a moment too late to mark the shaft and the differential yoke for re-assembly. Is there any way of "getting it right" w/o either going to a driveline shop or flipping a coin?

TIA...

[QB93Z]

Flip a coin, its not too hard to flip it over if it vibrates.

Jim

[Paul Workman]

Originally Posted by QB93Z

Flip a coin, its not too hard to flip it over if it vibrates.

Jim

Thank God (and Bill B!) for beam plates, huh?

As long as one is keerful, do you think it would it be possible to spin it while on the jacks, or ?

P.

[Hammer]

I never thought it mattered. The driveshaft is not balanced on the car so why would it matter. I did read one post about this but I've never had to mark any driveshafts before. Enlighten me please.
Thanks.

[Paul Workman]

Originally Posted by Hammer

I never thought it mattered. The driveshaft is not balanced on the car so why would it matter. I did read one post about this but I've never had to mark any driveshafts before. Enlighten me please.
Thanks.

I don't know if it is as much about balance as it is alignment of the yoke(s). But, in some cases you can have a vibration or "buzz" in the chassis which is related to which way the drive shaft is installed. I already had the problem w/ my Z and flipping it did the trick. And, recently I saw another thread where someone flipped the driveshaft to get rid of a substantial vibration. (I believe I saw a reference to marking the driveshaft/diff yoke - perhaps in the FSM?)

P.

[QB93Z]

Originally Posted by Paul Workman

Thank God (and Bill B!) for beam plates, huh?

As long as one is keerful, do you think it would it be possible to spin it while on the jacks, or ?

P.

No F...ing way!!! Besides being really dangerous, the operating conditions of running the car on jacks would be so strange that you won't be able to tell if it is vibrating.

Also I would like to see you at BG.

Jim

[Paul Workman]

Originally Posted by QB93Z

No F...ing way!!!

Jim...You shouldn't mince words...Just come right out and say what you mean! Actually, I'd heard of ppl spinning on jacks for other reasons; just not for this one in particular. It sounds a little "precarious" to me as well, and no way would I ever be under any car (on jacks) while it was running. And, too I hadn't considered the angles of the drive shaft while up on jacks. That would add another element "fer sher".

Originally Posted by QB93Z

Also I would like to see you at BG.

Jim

Dittos! Will be good to see you again and to put faces on so many fellow Z-nuts! Hoping to have the Z back together and tuned up by then. That is the plan, at least. One way or 'nuther tho...

P.

[tomtom72]

This is a fwiw..... I did it on a lift with my 72 and at idle speed. The rear suspension starts to cause the rear wheels to do this up and down motion, slowly at 900 rpms. I shut down quickly as it looked to be a bad idea. I plead youth and ignorance for that not so bright move!

Now maybe the C3's rear suspension configuration needs the car's weight to stop that kind of movement in the rear suspension, and the C4 has more "links" to it so maybe it will not oscillate like the C3????? I really do think that it's the IRS that causes the oscillation.....I think? You used to do it with live rear cars.

On the drive shaft thing, all my friends that are Auto-Tech grads always told me to mark the rear yoke...to save the time in flipping the shaft 180*.


Tom