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Old 01-26-2014, 08:26 PM
  #16  
BC
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Originally Posted by Rob Edwards
BC-

What year is Leeroy? IIRC the replacement engine was from an '80, but can't remember the MY of the car itself. What's the VIN?
Its an 80. So it would make sense that it is an 03.
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Old 01-26-2014, 08:31 PM
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Originally Posted by Lizard928
What box is this? G28-03?
Originally Posted by IcemanG17
I have a few G28-03...I know two have good 5th gear.....one is unknown & an open diff....I was told it worked fine but had crunchy synchros when I bought the car for parts..... If you want-need it as a core to scavenge from.....I'll sell it super cheap....
Originally Posted by PorKen
I have a matched main shaft and ring gear from a '79(?) box, if it will fit.
Thanks guys. I am unsure as to the (exact) path at this time. The reason I needed this car is because I am rebuilding the transmission for my truck as the one in there is losing a stoic battle at 240,000 miles. I have other 928s I have to finish various large and small jobs on and then they can be driven temporarily.

**** happens. But for the amount of blood sweat and pesos I have put into Leeroy, I would have thought the soul of the car would have treated me a bit better recently. Its going to sit for a while one way or another.
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Old 01-26-2014, 08:36 PM
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could be 03 or 05 as I recall midyear production change.
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Old 01-26-2014, 08:42 PM
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Originally Posted by James Bailey
could be 03 or 05 as I recall midyear production change.
Yes.
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Old 01-26-2014, 09:16 PM
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Maybe the chick who owned it before drove the **** out of it.
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Old 01-26-2014, 09:31 PM
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Originally Posted by Imo000
Maybe the chick who owned it before drove the **** out of it.
No she just climbed up on the hood for a photo op ....
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Old 01-26-2014, 11:29 PM
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Poor Leeroy.
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Old 01-27-2014, 12:45 PM
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Originally Posted by James Bailey
No she just climbed up on the hood for a photo op ....
Any pics?
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Old 01-27-2014, 05:19 PM
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Originally Posted by BC
I see your point. The Clutch Failure(s) have been from frozen TOBs, which I am not seeing a direct correlation to, but you are using the word "harmonics" which can infer a wide range of issues.

Either way, it was very very old, and is not very very broken.
harmonics would be a series of vibrations that can cause instantaneous forces. in this case, it might have been a single force that did it in.

Originally Posted by GregBBRD
Think about it....

The harmonics from the failed clutch travel down the torque tube shaft to....
yeah..... a 1st harmonic!
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Old 01-27-2014, 05:25 PM
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Originally Posted by mark kibort
harmonics would be a series of vibrations that can cause instantaneous forces. in this case, it might have been a single force that did it in.


yeah..... a 1st harmonic!


remember my example of how the tail can wag the dog?? here is a great example of how the forces at the tire, reflected back to the driveline can be WAY more impressive! there could have been 1000ft-lbs of torque acting on the driveshaft, after the TOB locked up. the car is moving.... say in 5th and we already determined that it takes about 2000ft-lbs of torque to break the tires free.......... because it happend in 5th gear, at 2:1 , thats 1000ft-lbs on the drive line. if it happened in 2nd, a gear where 300ftlbs can break the tires free, that force wouldnt have broken the driveline.

the point here is.... too bad the short shaft didnt break instead. this becomes a $4000 part vs a short shaft of several $$hundred.
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Old 01-27-2014, 10:10 PM
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Originally Posted by mark kibort
remember my example of how the tail can wag the dog?? here is a great example of how the forces at the tire, reflected back to the driveline can be WAY more impressive! there could have been 1000ft-lbs of torque acting on the driveshaft, after the TOB locked up. the car is moving.... say in 5th and we already determined that it takes about 2000ft-lbs of torque to break the tires free.......... because it happend in 5th gear, at 2:1 , thats 1000ft-lbs on the drive line. if it happened in 2nd, a gear where 300ftlbs can break the tires free, that force wouldnt have broken the driveline.

the point here is.... too bad the short shaft didnt break instead. this becomes a $4000 part vs a short shaft of several $$hundred.
How does the failed TOB lock up the driveshaft?
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Old 01-27-2014, 10:22 PM
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Mark, who is "we"?
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Old 01-27-2014, 10:46 PM
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BC, can you not find a half-decent box to just swap-in?
Low dollar (or near-free).


80 ROW had 05.
81-on USA then got it, IIRC.
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Old 01-28-2014, 08:13 AM
  #29  
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The trans has to come out, what would be the point of wasting the labor of the R&R to put back a half decent trans vs a rebuilt?

Problem is that broken input shaft I think makes it an unacceptable core to any rebuilder, its just some spare likely unneeded parts right now.
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Old 01-28-2014, 10:49 AM
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Is kibort having a conversation with himself again?
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