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MGA/MGB Banjo Axle Diffs - 4.875, 4.3, 3.9

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MGA/MGB Banjo Axle Diffs - 4.875, 4.3, 3.9 #1 MGA MGB MGB GT Parts Performance
Price: Various Location: Southlake, TX, USA
Bondracer7 Trevor Bond Southlake, TX, USA Sign in to contact 1965 MG MGB 1965 MG MGB 1965 MG MGB MkI	Topic Creator (OP) Apr 23, 2024 12:11 PM Joined 12 years ago 38 Posts

I have 13 diffs for my 2 MGB race cars and I don't need all of them so selling off a few if anyone is interested.

I have a welded 4.875 with 25 spline internal gears - complete, good for autocrossing or if you install a differerent trans with a good OD. - $400
I have a 4.875 R&P& case, no carrier if you want to build up an LSD with it. - $300
I have two 4.3 with 10 spline internal gears. Complete
I have a 3.9 R&P& case, no carrier if you want to build up an LSD with it. - $250
I have just an empty case, no gears, has 4.1 stamped on it - $50

Let me know what you need I might have it. I can send more photos also.

Diffs_1.jpg 57.8 KB

Welded48.jpg 41.4 KB

48_RPC.jpg 42.3 KB

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Re: MGA/MGB Banjo Axle Diffs - 4.875, 4.3, 3.9 #2
twentyover Greg Fast Lives in SoCal, Moving back to ancestral homeland, the Pacific NW, USA Sign in to contact	Apr 26, 2024 12:10 PM Top Contributor Joined 18 years ago 5,289 Posts

Looking for a case w/ carrier. I needs somthing to support the inner axle while pushing the car around.

I'll take the case-
let me know total w/ shipping to 98826

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Re: MGA/MGB Banjo Axle Diffs - 4.875, 4.3, 3.9 #3
L.Clay.Collins Clay Collins Houston, TX, USA Sign in to contact 1963 MG MGB 2012 Jaguar XF	Apr 26, 2024 05:03 PM Joined 5 years ago 124 Posts

I have a '63B with a 4.3:1 banjo axle. I added a type D overdrive, but it's still a lot of RPM's for driving around town. Do you have a 3.9:1 ring and pinion I could buy or perhaps it's easier to just buy the whole assembly(?). I've not done the setup before and would probably need to find a skilled shop to do it unless you have one already set up properly.

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Re: MGA/MGB Banjo Axle Diffs - 4.875, 4.3, 3.9 #4
Pacerpilot Mick Wheeler Peculiar, MO, USA Sign in to contact	Apr 26, 2024 05:22 PM Joined 1 year ago 25 Posts

Trevor, currently I am setting up a new 3.7 to 1 gear set for my MGA Mk2 . I need the input flange for the pinion shaft with dust ring, lock washer and nut for the pinion. Also a set of crown gear bolt (8) and the
bolt lock tabs (4) required.
Do you by chance have any of these small bits to help me out ???

Thanks, Mick Wheeler 816 522 0230

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Re: MGA/MGB Banjo Axle Diffs - 4.875, 4.3, 3.9 #5
Bondracer7 Trevor Bond Southlake, TX, USA Sign in to contact 1965 MG MGB 1965 MG MGB 1965 MG MGB MkI	Topic Creator (OP) Apr 29, 2024 12:13 PM Joined 12 years ago 38 Posts

Greg, I put in UPS ground and it said $26 so let's make it $75 and I'll try to get it out tomorrow or wed. Is that OK?

Edited 1 time(s). Last edit at 2024-04-29 12:15 PM by Bondracer7.

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