gort Posted December 6, 2019 Share Posted December 6, 2019 (edited) Hi Guys. The gearbox grinds when changing from 4th to 5th at speed, if I am driving normal it doesn't do it and goes into gear really easy but as soon as I am doing a bit of speed and at high revs it grinds, does anybody have any idea what could be causing this? Thanks in advance. Edited December 6, 2019 by gort Quote Link to comment Share on other sites More sharing options...
ZMANALEX Posted December 6, 2019 Share Posted December 6, 2019 Clutch not clearing or you are beating the 4th-5th syncro. Either way the gearbox will have to come out if you want a permanent fix or just let the revs drop and be a tad less aggressive with your gear changes. Quote Link to comment Share on other sites More sharing options...
gort Posted December 6, 2019 Author Share Posted December 6, 2019 could it be a worn synchro ring on 4th ? and would new oil + molyslip help Quote Link to comment Share on other sites More sharing options...
ZMANALEX Posted December 6, 2019 Share Posted December 6, 2019 28 minutes ago, gort said: could it be a worn synchro ring on 4th ? and would new oil + molyslip help That is what I basically have said regarding the syncros. Fresh fluids will not help. Just be less aggressive with your gear changes and you will be fine. Or splash the cash and pull the box. Quote Link to comment Share on other sites More sharing options...
gort Posted December 6, 2019 Author Share Posted December 6, 2019 38 minutes ago, ZMANALEX said: That is what I basically have said regarding the syncros. Fresh fluids will not help. Just be less aggressive with your gear changes and you will be fine. Or splash the cash and pull the box. thanks (y) Quote Link to comment Share on other sites More sharing options...
gort Posted December 6, 2019 Author Share Posted December 6, 2019 Any idea of the total cost?, Would I need to buy the parts from Nissan Quote Link to comment Share on other sites More sharing options...
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