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Bus Discussion => Bus Topics ( click here for quick start! ) => Topic started by: Tom Y on April 17, 2011, 08:29:55 AM

Title: MCI 5C Driveshaft
Post by: Tom Y on April 17, 2011, 08:29:55 AM
Heres a pic of a 5C driveshaft fro a 8v71 with a spicer 4 speed. Note the yokes out of phase. This is to inform 5C owners what they have.  Tom Y
Title: Re: MCI 5C Driveshaft
Post by: Tom Y on April 17, 2011, 08:31:16 AM
Heres why, note the spline.
Title: Re: MCI 5C Driveshaft
Post by: bevans6 on April 17, 2011, 10:00:03 AM
I wonder if that is to accomodate the fact that the engine is installed at an angle to the rear end?  It has about a 10 degree offset from 90 degrees fore-aft.

Brian
Title: Re: MCI 5C Driveshaft
Post by: lostagain on April 17, 2011, 11:47:18 AM
So it looks like there is only one way to slip it back on. That's a good thing. Mine is out of phase like this too, because of the angles between engine and drop box.

JC
Title: Re: MCI 5C Driveshaft
Post by: Dave5Cs on April 17, 2011, 04:39:12 PM
OK but I don't see where they compensated for the weight loss of the other missing spline on the shaft or maybe inside. I don't feel any verb-rations in mine or is it different on 6v- 71 and Automatic MT 654

Dave
Title: Re: MCI 5C Driveshaft
Post by: artvonne on April 17, 2011, 08:30:12 PM
  The missing spline is compensated for by the bigger spline of the other shaft. When the two are slid together there are no voids.

 
Title: Re: MCI 5C Driveshaft
Post by: Tom Y on April 18, 2011, 03:23:29 AM
Dave, If you look at yours and it is out of phase I would think it the same.  Tom
Title: Re: MCI 5C Driveshaft
Post by: Dave5Cs on April 18, 2011, 07:12:49 AM
yep must be because it is also out of Phase about 10 degrees.
Thanks Tom

Dave
Title: Re: MCI 5C Driveshaft
Post by: artvonne on April 18, 2011, 09:19:48 AM
  With the amount of torque going through that shaft, its surprising they arent using a CV joint. I thought the angle was only 5 degrees. 10 degrees is actually quite high. Good idea to give these MC5 drive shafts some extra attention. Dont wait until its thumpin. And dont keep going if it starts.
Title: Re: MCI 5C Driveshaft
Post by: Tom Y on April 18, 2011, 01:30:05 PM
I did not think it was 10 degrees??? I had on mine 3.89 degrees of engine out of parallel to bus. Not sure now??