A chipped tooth means that the case hardness is lost, which results in rapid wear under load. * Need to inspect laygear spur, reverse spur and 1st gear spur teeth for wear & chips, damage, etc. * 2nd, 3rd & 4th gear synchros (note late 1965 & on uses a steel synchro, which production ended Nov 2009, so you would need to look for NOS replacement. The first thing to do is strip it down, clean and inspect all components for usability. He recently stripped down 3 gearboxes for a fellow MGCC-LICmember and found little usable. You can contact John Esposito at Quantumechanics and he will tell you the same experience. But it would be an interesting and educational exercise!įrom my own experience regarding just the 3 synchro gearbox both non o/d & o/d during the last four decades I have stripped dozens of these crash boxes, finding limited usable parts. Gearboxes are bad enough, overdrives are even more specialised, like an auto box. You often hear of people rebuilding gearboxes but overdrives are rarely discussed. What parts am I likely to need as well as the shaft? The box has sludgy oil so I suspect the linings in the overdrive are shot. I have just managed to buy an input shaft (small type for my 3 main engine) and I was wondering whether it's worth having a go myself.
MG MGB Technical - Rebuildiing D-type overdrive and gearbox Ages ago, I bought a 3-synchro box and overdrive intending to swap it for an exchange unit.
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