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Found 2 results

  1. R32 GTR synchro needs replacing so in my r32 gtr when changing from 3rd to 4th over 60 km it crunches so im guessing the synchro is gone i am planning on pulling the gearbox and replacing the synchro, i have a friend who can do it for me but he has never done a 32 sychro replacement, anything to look out for or tips also where would you recommend buying the synchros from? do they have a part name? thanks,
  2. I am currently rebuilding a R34 GTT gearbox that has a problem getting stuck in 4th gear and unable to down shift from 5th to 3rd even if you rev match (block out condition). Sometimes you have to jerk the shifter to get it to pop out of 4th, but funny enough, all the gears goes in like butter even on full song. All the gears can be selected in/out with the car running, clutch-in whilst on the brakes (i.e. the main shaft not rotating) indicating that it is not clutch drag related. Information on previous rebuild: New bearings and synchros 3rd/4th synchro key popped out, one was found in the drain plug Inspections on tear down during current rebuild: Input shaft end play was checked and within specs Countershaft end play was checked and within specs Synchro gap and grab was checked and within specs (all gears) Synchro teeth condition was good (all gears) 1st/2nd and 3rd/4th synchro keys and spring was in place All bearing condition was good All shift forks had slight wear on where the brass lining were but as expected. No cracks. It was found that 3rd/4th synchro hub and the slider felt loose and was able to rock when assembled compared to the 1st/2nd synchro hub As all the issues are apparent in the 3rd/4th cluster, an educated assumption is that when the 3rd/4th synchro key popped out as per previous rebuild due to play in the hub and slider, more kilometres gave it additional wear that made it so severe that the engaging the slider caused it to be twisted off centre and jam into place, unable to get out of 4th. Is the above a reasonable conclusion to the problem? • TIA •
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