Transmission Help

Some help please

Car as received:
1960 modified frogeye sprite - modified in period - was a right old sate - has gone through a nut and bolt rebuild apart from the gearbox which has now broken some teeth and also jumping out of reverse

Drive train as received and rebuilt
948 + 60" engine
948 crankshaft
948 flywheel - whole bottom end balanced
6.5" clutch
9 spring pressure plate - ? aftermarket
1275 throwout bearing
1098 clutch fork but appears bent and ? cut or snapped and welded back together (see photos)
3 1/2" slave cylinder pushrod
7/8" dual bore master cylinder
22g118 gearbox frontplate
ribbed 1098 gearbox with gearset that is identical to 1098 morris gears + bronze bushed and baulk rings (all marked HS14 rather than normal part numbers..)

I am concerned the clutch geometry is a mess and whilst have it apart want to sort it out
Could you help me fill in the ??? with what should be in the system:

948 + 60" engine
948 crankshaft
948 flywheel - whole bottom end balanced
6.5" clutch
???? what pressure plate ? standard 948
????throwout bearing
??? clutch fork
?? slave cylinder pushgrod
7/8" dual bore mastercylinder
22g118 gearbox frontplate
1098 minor gearbox - have a spare that am rebuilding

I can't get my head around all the different changes and basically what is needed to mate a 948 engine to a 1098 box.

any help really appreciated.

(bizarrely have another 1098 goal seal spare box that has a 2a3087 i.e. 948 front plate on it with the correct mountings! incase this is what I should be using with this system)

Pictures attached: bent/modified 1098 clutch fork shown next to a standard 948 clutch fork and bearing.

Dan,

If your fork is bent, re-welded or modified in some way, you need to replace it with the correct 1098/1275 fork for a ribbed box.


The clutch needs to match the engine, i.e pressure plate, disc and release bearing should all be from a 948 kit.


The thick back plate is correct with a ribbed box. The front gearbox plate is correct.


Lastly, you should be using the correct pushrod for a ribbed 1098 gearbox.


If you have disc brakes, you should have or convert to a 3/4” bore master cylinder and correct pushrods, and a 7/8” slave cylinder. The 3/4" bore will also improve your clutch action.

There are no photos attached to your post.