[Jac Mac]

Originally Posted by Learjockey1

Working on the car to get it ready for Summer. I took the tunnel of and now will be calling Bob to get new carpets, not every pice but a least 5 pieces assciated with the tunnel. Somebody glued the carpet as if the tunnel was permanent.

Questions:
1) I have .050 " of yoke side play in the 14" tail housing measured at the U joint end cap. Check this dimension in that 7/8" area in *3 below, it should bring this number down below 0.010", if not the tailshaft housing bush or yoke are worn & need attention.
2) My front U joint has .010" of side play. I can see it move. Is this too much? THis should be fine.
3) I have 7/8" of slip yoke "clean machined metal" outside the rubber slip ring edge. Can that be reduced since I have the Jag rear end and there is no in and out. Hopefully to gain greater rigidity ?Unless the yoke splines have a huge amount of wear & in which case it (the yoke ) should be replaced I see no need to change this.

I can feel a little drivetrain grunting going throught 2500 -3000 RPM, I wasn't looking for problems but working on the ERA Hurst shifter play.

It is Saturday and I am sure the drive shaft shops are closed.

Google searchs of the subject not real clear on the yoke side play issue

With short driveshafts both U-Joints should run similar angles & be on the same plane, so that needle rollers in each U-joint actually work, rather than sit in the one position where it literally grinds the rollers into a trench they dig themselves