350zPhil Posted October 23, 2016 Share Posted October 23, 2016 I have the common problem of notchy gearchanges between 1st and 2nd and slightly 5th to 6th, ive pulled the box apart and as far as i can see only 5th to 6th synchro is a bit worn, my main concern is the amount of play on the shaft that slides into the spigot bearing, is this supposed to be like this or have i got an issue with the needle roller bearing that this shaft sits on? im a little worried that theres not enough wear on any part to cause the issues im having, ive bever seen an input shaft with this much movement on any other car though so im a little concerned with it. Any thoughts would be appreciated. Quote Link to comment Share on other sites More sharing options...
ZMANALEX Posted October 23, 2016 Share Posted October 23, 2016 Minimum requirement when the box is stripped would be both syncros and all bearings. Quote Link to comment Share on other sites More sharing options...
350zPhil Posted October 23, 2016 Author Share Posted October 23, 2016 Should i be able to move the shaft axially when the box is built up? I first noticed it when i changed the clutch, the bearing seems fine i will change it anyway though, was wondering if the shaft is the issue or the main drive gear bearing sleeve or something im missing, service manual doesnt ask for the main pilot bearing or main drive bearing to be changed unless defective, should i just change them to be safe? Quote Link to comment Share on other sites More sharing options...
ZMANALEX Posted October 23, 2016 Share Posted October 23, 2016 Due to the design of the bearing and the length of the shaft there will be movement. Good engineering practise to swop out all bearings. Quote Link to comment Share on other sites More sharing options...
350zPhil Posted October 24, 2016 Author Share Posted October 24, 2016 Cheers mate, will do Quote Link to comment Share on other sites More sharing options...
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