Quote: I had a driveshaft shortened at a metal fab shop once. What you described is exactly what they did. I never had it ballanced and didn't have any problems. Obviously the proper way is to have it ballanced. I'm sure I just got lucky.
How fast did you drive the car wit hthat unbalanced shaft ? The only time I ever had it done the balance seemed ok at the legal speed limit , 100mph with a 3.23 gear and a 4 speed was a completely different matter .
this is not a place to cut corners. IMHO
ever have a shaft come out at trip diget speeds
you need a least a lathe,then mill the weld bead only to remove the yoke,make the tube cut with the lathe also,then replace the yoke and phase it back to the other end,reweld it,only way i know to get it straight..then have a high speed balance to check the run out.
my local machine shop chops them down 25$ but i have to go to the drive shaft shop for balance at another 40$
