Steve Swan
Well-Known Member
Well as it Happens, I got the square root of bugger all done over the holidays. Apart from beginning to order the list for the Monte box. Paul's 8 awaits the bodyshop (surprise surprise) and I'm off to see the gearcutters on Tuesday to see about a bespoke crownwheel and pinion set. Wish me luck!!
Yesterday I got back onto my own Frankenstien box, first up was to internally screwcut the bearing plate to take the Bespoke manufacture bolt , this has to be because the original set up uses a different shaped main gear case and I am retrofitting it to an earlier design.
All the early type split case boxes are 3 rail, the first 5 speed designs were made into 4 rail, some by hanging 5th onto 3rd/4th rail and the slightly later designs used a 4th rail cast into the case itself, ironically the later versions used the 5th gear hung on the end of reverse, giving a double H pattern on just 3 rails. Funny old world ain't it.

I have drilled the hole to let the 4th rail pass through and relieved the case.

Rather than piss about trying to build up the Ally case, I machine out a relief in the bearing plate and make a steel bush to carry the 4th rail, now it gets a bit tricky..

You need to tack the bush to the plate making sure nothing goes out of shape. I would make a proper jig if I were doing a lot of these, but as they tend to be for my own use I just have to mess about getting it right.

Yo must make sure with the plate on the endcase dowels you can reach through with one finger and work the 5th gear rail back and forth

Happy with that we can put it together. To be honest I had to put an expanding reamer through the hole as welding it altered it's shape a couple of thou.

I also forgot to put the flats on the one off bolt , so I can tighten it up then assemble it.

Clean up the mating faces.

Fit the plate and bolt it in place with the recessed bolts.

Then Fit the swinging shoe for the selector and tighten with plenty of loctite and Voila! one 365 5th gear endcase and guts grafted onto a 330 4 speed case
I'll button up the endcase tomorrow and it's done. Don't try this at home Boys and Girls, well unless you are as daft as me............................
Yesterday I got back onto my own Frankenstien box, first up was to internally screwcut the bearing plate to take the Bespoke manufacture bolt , this has to be because the original set up uses a different shaped main gear case and I am retrofitting it to an earlier design.
All the early type split case boxes are 3 rail, the first 5 speed designs were made into 4 rail, some by hanging 5th onto 3rd/4th rail and the slightly later designs used a 4th rail cast into the case itself, ironically the later versions used the 5th gear hung on the end of reverse, giving a double H pattern on just 3 rails. Funny old world ain't it.

I have drilled the hole to let the 4th rail pass through and relieved the case.

Rather than piss about trying to build up the Ally case, I machine out a relief in the bearing plate and make a steel bush to carry the 4th rail, now it gets a bit tricky..

You need to tack the bush to the plate making sure nothing goes out of shape. I would make a proper jig if I were doing a lot of these, but as they tend to be for my own use I just have to mess about getting it right.

Yo must make sure with the plate on the endcase dowels you can reach through with one finger and work the 5th gear rail back and forth

Happy with that we can put it together. To be honest I had to put an expanding reamer through the hole as welding it altered it's shape a couple of thou.

I also forgot to put the flats on the one off bolt , so I can tighten it up then assemble it.

Clean up the mating faces.

Fit the plate and bolt it in place with the recessed bolts.

Then Fit the swinging shoe for the selector and tighten with plenty of loctite and Voila! one 365 5th gear endcase and guts grafted onto a 330 4 speed case
I'll button up the endcase tomorrow and it's done. Don't try this at home Boys and Girls, well unless you are as daft as me............................
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