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86.5 Dual Disc Clutch Adjustment??

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Old 12-05-2012, 03:35 AM
  #46  
GregBBRD
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Originally Posted by jbrob007
No LSD... unfortunately I've tried both Redline & Mobil One. The tranny likes to weep fluid with the Redline. Mobil One doesnt do this... other than that I havent noticed a big difference.

Anyway, a friend of mine believes the syncros may perform better with petroleum based gear lube since it is naturally thicker and not as slippery - especially if the syncros are a bit worn. The synthetic performs better but its not as thick and may actually inhibit the syncros from doing thier job... Synthetic probably wasnt around when these tranny's were designed - new & improved or more expensive doesnt always equate to better.

Any thoughts or experience, positive / negative, from you guys?
Forget about the gear oil. Mobil 1 75/90 might be the "perfect" gear oil, for the Borg Warner design syncros inside your gearbox.

Your clutch isn't releasing properly. The fact that you can't "pull" it out of gear, when running, tells you that the problem is very severe. You are destroying syncros everytime you shift this thing, with the engine running.

There's a whole bunch of different ideas on how to make these clutches work "better".

Try and remember that there were literally thousands of stock clutches installed that worked perfectly....without welding or pinning anything.
Old 12-05-2012, 11:17 PM
  #47  
jbrob007
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Greg, I've come to the same conclusion albiet by making three right turns in order to make a left turn... in other words "the hard way". I'm a hard-headed cuss, but I do learn eventually I ordered new TO bearing & sleeve from 928 Intl so I can press out the old & replace with the new. Until then she's staying parked. Hopefully, I havent trashed the syncros too badly...

I'll report back once the TO bearing work is complete.
Old 12-06-2012, 02:48 PM
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Originally Posted by jbrob007
Greg, I've come to the same conclusion albiet by making three right turns in order to make a left turn... in other words "the hard way". I'm a hard-headed cuss, but I do learn eventually I ordered new TO bearing & sleeve from 928 Intl so I can press out the old & replace with the new. Until then she's staying parked. Hopefully, I havent trashed the syncros too badly...

I'll report back once the TO bearing work is complete.
Smart man, you are.

"Early" gearboxes are simple to tell when the clutch is "dragging" slightly. They grind reverse.

Later Birg Warner boxes, with a syncro in reverse, can "delay" the knowledge that the clutch is "dragging".

By the time they won't pull out of gear without significant effort, they are "dragging" pretty badly.
Old 12-06-2012, 03:14 PM
  #49  
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just make a hydraulic TOB for DD already Greg... shesh....
:-P
Old 12-07-2012, 01:08 AM
  #50  
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Originally Posted by Ducman82
just make a hydraulic TOB for DD already Greg... shesh....
:-P
I did. But converted it to a push clutch and added carbon as a friction material....



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