Overdrive engage/disengage

[59 Aceca]

My AC powered Aceca has the stock Moss transmission with optional factory overdrive.  I've had the car a couple of years now and have often wondered if the "bump" I sometimes feel when the overdrive is engaged and/or disengaged is normal.  Any comments would be appreciated.
   
   Greg

[bobbylangley]

My Greyhound has overdrive and feels the same. I just dip the clutch before engaging/disengaging and that seems to do the trick

[59 Aceca]

Thanks for feedback and the suggestion.
   
   Greg

[pjbowman]

Greg - I have an MGB GT with the overdrive, and I agree with the above, the 'bump' is absolutely normal if engaging/disengaging without the clutch. Like Bobby, I have taken to dipping the clutch briefly when engaging/disengaging.
   
   Peter

[59 Aceca]

Thanks Peter.  Great to know that everything is functioning properly.  I'm going to be a clutch dipper from now on!
   
   Greg

[bex316]

I had an MGB GT V8 (factory version) before. I remember engaging the overdrive was very quick and quite smooth, disengaging a bit slower and with a small bump. This may however be caused by the condition of the overdrive unit. The car being a 1974 model may not be totally comparable to an Aceca or Greyhound since it has very probably a later type of overdrive.
   
   Jerry