These ribcase gearbox front covers are from new castings, designed with the included rubber seal. This is a huge improvement on the factory design with it's useless scroll seal.
This cover will fit the left and right hand drive 1098/1275cc Ribcase Sprite and Midget. If you have a 1098cc Morris Minor with a ribcase, this number is for Right Hand Drive cars only.
For the Left Hand Drive Morris Minor (USA Models), use part C-22G124.
The LHD Morris Minor had an unusual front cover on the ribcase gearbox from the factory. The casting number should be 22G124 and you're correct, the arm pivot area is wider than all other front covers. The reason for this was to make room for the stud and nut that come through this area just below the pivot. It's to maintain the bolt pattern in the bell housing without needing a special bell housing just for the LHD Minors. The fork should be correct as all of the ribcase types are the same on Morris Minors and Spridgets but the 22G124 cover needs a spacer tube and a longer bolt to secure the fork in the wider space. Take a look at the link below and scroll down to the picture of the 1098cc Morris Minor fork that shows the bolt and the aluminum spacer tube attached:
https://www.gerardsgarage.com/Garage/Tech/TO_Bearings/tobearings.htm
If your spacer was lost, you need to make a new one. It shouldn't be too difficult with some aluminum bar stock. Make sure to cut it to length so that it keeps the fork pressed up against one side of the pivot towers (where the fork is centered over the input shaft) and there's no free play when it's bolted together.
I hope all of that makes sense.
These ribcase gearbox front covers are from new castings, designed with the included rubber seal. This is a huge improvement on the factory design with it's useless scroll seal.
This cover will fit the left and right hand drive 1098/1275cc Ribcase Sprite and Midget. If you have a 1098cc Morris Minor with a ribcase, this number is for Right Hand Drive cars only.
For the Left Hand Drive Morris Minor (USA Models), use part C-22G124.
The LHD Morris Minor had an unusual front cover on the ribcase gearbox from the factory. The casting number should be 22G124 and you're correct, the arm pivot area is wider than all other front covers. The reason for this was to make room for the stud and nut that come through this area just below the pivot. It's to maintain the bolt pattern in the bell housing without needing a special bell housing just for the LHD Minors. The fork should be correct as all of the ribcase types are the same on Morris Minors and Spridgets but the 22G124 cover needs a spacer tube and a longer bolt to secure the fork in the wider space. Take a look at the link below and scroll down to the picture of the 1098cc Morris Minor fork that shows the bolt and the aluminum spacer tube attached:
https://www.gerardsgarage.com/Garage/Tech/TO_Bearings/tobearings.htm
If your spacer was lost, you need to make a new one. It shouldn't be too difficult with some aluminum bar stock. Make sure to cut it to length so that it keeps the fork pressed up against one side of the pivot towers (where the fork is centered over the input shaft) and there's no free play when it's bolted together.
I hope all of that makes sense.
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