4 speed syncro gear wear

[Chris KC]

I'm ready to be corrected here, but theoretically the synchro cones match the shaft speeds before the dogs make contact, so they should simply slip into engagement. Things which could go wrong here are (i) synchro not very effective (perhaps due to wear or maladjustment), dogs thus trying to engage against inertia (ii) driver shoving the box into gear and beating the synchro, ditto (iii) the dogs will rarely be perfectly aligned, so there must be a little wear as they are pushed into engagement. I suggest the secret to a long life is treating it as though it were a crash box & double-declutching - allow the synchro to help rather than expecting it to do all the work. Naturally things like forgetting to fill with oil (or using an unsuitable grade) aren't going to help.