Gear Box - Tight

[jo90]

Right, im rebuilding the car ready for sunday. I've built up the gear box in MM4 format. All the casing, bearings, shafts etc clean and all in 100% order (no dodgy bearings etc). Layshaft spacer is one of the new ones so its in 100% good nick too.

Put the gears in, along with a gear diff. Before closing the case up all the gears spin fine. close the two halves together and it is binding like mad to the point Im having to use reasonable force to turn the gearbox over from the diff outdrives. Take it apart, re-check gears all spin in both sides of the gearbox haves, put it together again, same thing.

I even removed the shims from either side of the 2 idler gears to create space, still same thing.

Has anyone else come across this at all ? Im wondering if the gearbox has warped somehow in a knock.

cheers