Morris Minor Owners Club

I am in the throws of changing our 4.55:1 diff for a 4.22:1 one. As the more experienced will know the earlier diff had the filler in the nose casing where as the later ones are on the back plate. Before I go drilling holes in the back plate any thoughts, ideas etc. about the plug. Sorry if this has come up before but I cannot find any thread. Regards to all, Nigel

I'm fairly sure my 65 1098 Traveller with 4.22 diff has the filler on the nose. I'm several thousand miles away from it at the moment - so it's hard to look see !

Nigel2 wrote:Before I go drilling holes in the back plate any thoughts, ideas etc. about the plug.

You could always transfer the pinion and carrier from one casing to the other. Assuming you have the tools to do this.

We cut an old filler hole and about 25mm of metal in a square off an old axle(note the position)&nbsp;then cut the same size hole in my existing rear axle and welded the new filler hole & plate o&shy;nto the axle in the correct position so that I can check the diff oil and top up as required.&nbsp; This seems to have worked OK.<BR><BR>Jeff

Thanks for comments. I cut out a sump bush with sump plug from a redundant sump, welded it in and then smeared JB weld around it. All seems to work OK. Next problem, seized front wheel cylinder X 2. Anybody have any thoughts on pattern cylinders verses 'original'. I know seals cannot be replaced but have generally found that by the time the seals need replacing they are knackered anyway!

Since the brakes are so important to your well being I would go for
'original' every time. There have been problems with various pattern
brake components.