In the old days we used to test a synchro by letting the engine tick over and
pushing the lever into gear - the linkage used to be directly into the casing
and not on the outside - haven't seen a BM box for a long time.
If the engine revs fell one could assume the synchro rings were Ok. Another
test was to let the car pick up speed by itself - no appreciable throttle - in
first then lift off and try to slip it into second - if it went in easy then no
problem but this only works going up the box.
However a true sign of synchro ring problems is Crunching the gears. If it
jumps out of gear it is usually the synchro-hub springs and balls and locating
Sir Hugh of Bognor
The difference between men and boys is the price of their toys.
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