13-01-2019, 08:01 AM
I have heard of related problem in other cars. I recall a workmate driving 40 miles in 1st in an A40 Farina. But I presume with the Seven the 2nd synchro cone is wedged also, preventing use.
But just what endfloat is the problem? 1st gear within selectors? Or is it selector maladjustment or mainshaft position? 1st gear too rearward relative mainshaft. Is it excessive 1st/2nd hub movement due worn synchro cone? Is there a cure? I suppose cones can be prised off and spaced. Does anyone make new synchro cones? Or is it 2nd gear on bush float, or bush on3rd, or 3rd hub on bush, or 3rd bush on mainshaft?? i have seen none of the latter seriously worn.
With that type of basic synchro gearbox it is always a mystery what stops the adjacent synchro cone from working into contact. But many makes had the same arrangement.
Of the relatively few gearboxes I have worked on I have been impressed by the general quality. Ridged 1st/3rd motion bearing and loose synchro cones seem main failings. 1st/reverse pit eventually but function for years after. As I have mentioned before I have had a lot to do with Javelin cars; despite semi luxury price tag the gearboxeas are relatively crude. Many had major replacements well before 100,000. 1st gear seems more frail than a Seven!
But just what endfloat is the problem? 1st gear within selectors? Or is it selector maladjustment or mainshaft position? 1st gear too rearward relative mainshaft. Is it excessive 1st/2nd hub movement due worn synchro cone? Is there a cure? I suppose cones can be prised off and spaced. Does anyone make new synchro cones? Or is it 2nd gear on bush float, or bush on3rd, or 3rd hub on bush, or 3rd bush on mainshaft?? i have seen none of the latter seriously worn.
With that type of basic synchro gearbox it is always a mystery what stops the adjacent synchro cone from working into contact. But many makes had the same arrangement.
Of the relatively few gearboxes I have worked on I have been impressed by the general quality. Ridged 1st/3rd motion bearing and loose synchro cones seem main failings. 1st/reverse pit eventually but function for years after. As I have mentioned before I have had a lot to do with Javelin cars; despite semi luxury price tag the gearboxeas are relatively crude. Many had major replacements well before 100,000. 1st gear seems more frail than a Seven!