RE: J Type Overdrive
The short answer is no. If you put the gearbox in any gear and turn over the engine the output flange should turn with it, albeit at correspondingly different rates. The overdrive should have nothing to do with this operation as, when it is not operational as in your scenario, the output shaft should go straight through it to the output flange. If you are certain its in gear and it doesn't turn with the engine something is wrong but it may not be the overdrive, because even when the overdrive stops working you should be able to get the first four gears, otherwise every time one packs in - and they do go wrong - the car would grind to a halt and I've never known that to happen, you just have to live with only four gears till you get it fixed, unless someone can enlighten us both.
Mike Gilbert.
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