drive line

[bojo68]

I've been curious as to why all the driveline bs. Can understand that the rubber ones aren't as good as the ones in a 62 pontiac,(they didn't deteriorate). and now there's a 93 one piece on the big auction site in the sky with a pic. It's got a bellow in it, no wonder, I can't see aluminum holding clearances within tolerance with a bellow in it either.
I've made my own driveshafts and never had any problem, or had to balance one either. Of course I use real high tech devices to hold tolerances tight. I use radiator hose clamps and a scribe along with a skillsaw with a abrasive cutoff blade in it to make sure the cuts are square. Then I use a 12 pound hammer to drive the yoke into the tube.
So far it's never failed, but admittedly the fastest I've run them to is 120 mph.(fairly low geared, 69 datsun p/u differential)
One the yoke fit the tube so tight, and I didn't have a welder handy, so I drove it for 2 days without welding it, and it held..:)

[luxuryrules]

The factory two-piece driveshaft was done as a further layer of isolation between the road and the driver. And for the first decade or so on cars that were left in stock condition, that's exactly what they did.

Since we're now working with high mileage and aging components, it's almost a no-brainer to replace it with a one-piece unit. Nobody here is going to really care if it's a fraction of a decible louder or harsher, as we're putting these cars through more punishment than any of the original customers (for which these things were designed) ever would have :)