[TR] Gearbox Castings

[George Haynes]

Re: TR4 vs. TR4A gearbox castings: they're not the same.  TR4A's and later
have a much thicker flange where the bellhousing bolts to the engine.  There
may be some other minor differences but I'm sure of the flange thickness
difference.  Changed from spring to diaphragm clutches at the same time.
George





 Does anyone know if a TR4 gearbox with the number 304692SM on > the right
side of the casing is out of a TR4 or TR4A?

What difference does it make?That is a casting number, and AFAIK the castings
were the same between 4 and4A.