Gearbox additives? Thumbs down?
Discussion
Gearbox seems fine actually. Shifts well. No obvious problems.
Only issue is occasional grinding when choosing reverse -- not a problem now, because I shift into second and then into reverse. No grinding whatesoever, when I do that.
Some gearheads have recommended a high-quality synthetic gear oil as just a better overall lubricant, even for these old gearboxes.
Good idea, do you think?
Ron
Only issue is occasional grinding when choosing reverse -- not a problem now, because I shift into second and then into reverse. No grinding whatesoever, when I do that.
Some gearheads have recommended a high-quality synthetic gear oil as just a better overall lubricant, even for these old gearboxes.
Good idea, do you think?
Ron
As I remember....
The general guide to Molyslip (molybdenum disulphide) is that it's a very good lubricant, but not where combustion takes place (i.e. in an engine), as it can burn/oxidize and turn into molybdenum (di)oxide which is an abrasive, and so a BAD idea.
In a gearbox, it probably does very well, but as said, some functions of synchro require a little bit of grip, and so changes can be affected.
If you have box with separate overdrive (Triumph TR6 for example) , DON'T use it, as the overdive unit has clutches inside which need grip to work properly. In fact I have read that some modern (= thinner?) gearbox oils say they are not compatible with hydraulic overdrives.
The general guide to Molyslip (molybdenum disulphide) is that it's a very good lubricant, but not where combustion takes place (i.e. in an engine), as it can burn/oxidize and turn into molybdenum (di)oxide which is an abrasive, and so a BAD idea.
In a gearbox, it probably does very well, but as said, some functions of synchro require a little bit of grip, and so changes can be affected.
If you have box with separate overdrive (Triumph TR6 for example) , DON'T use it, as the overdive unit has clutches inside which need grip to work properly. In fact I have read that some modern (= thinner?) gearbox oils say they are not compatible with hydraulic overdrives.
Renaldo...
No....I had boxes with overdrives, and so used the standard EP90 gear oil.
Only ever had a problem once with a box, it was because a tiny piece of metal got stuck in the overdrive solenoid valve. Other than that, all of them worked fine and quiet, not as slick as (Euro) Ford boxes, but still pretty good boxes overall.
As an aside, I'm pretty sure you can swop to an overdrive box without drive shaft/prop shaft mods, if you happen to find one. The overdrive is the same as a having fifth gear, in effect. Later Triumph boxes had a smaller overdive unit, if tunnel clearance a problem.
No....I had boxes with overdrives, and so used the standard EP90 gear oil.
Only ever had a problem once with a box, it was because a tiny piece of metal got stuck in the overdrive solenoid valve. Other than that, all of them worked fine and quiet, not as slick as (Euro) Ford boxes, but still pretty good boxes overall.
As an aside, I'm pretty sure you can swop to an overdrive box without drive shaft/prop shaft mods, if you happen to find one. The overdrive is the same as a having fifth gear, in effect. Later Triumph boxes had a smaller overdive unit, if tunnel clearance a problem.
Gassing Station | TVR Classics | Top of Page | What's New | My Stuff