Hi Guys,
I have a Morris Minor with an A12 (B310 I think) motor and 56a 4 speed gearbox which is giving me some trouble.
The original gearbox I had in it gave me no problems for 5 years before falling apart. I got a replacement really cheap which I had reconditioned.
Since putting the new gearbox in I have had no end of problems with vibration and wearing out the bush at the back of the gearbox. I have had my driveshaft length modified too, so that there is what I thought was the correct amount of clearance at the back of the gearbox. Also new yoke/universal joint attached.

The problem is that once again I tried to take the car on a roadtrip and after an hour at 100km/h the back of the gearbox had gotten really hot and started vibrating more again.
What I'm wondering is what the yoke / gearbox join should look like when set up correctly? How much clearance should there be? If anyone has any photos it would be really helpful (I will put some photos of mine up soon). I have had trouble with this for so long now that I can't remember what it all looked like before the first gearbox died.

Any help or advice would be much appreciated.