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Rear End on early versus rubber bumper MGBs

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Rear End on early versus rubber bumper MGBs #1
windjammerusn40 windjammerusn40 McCord East Peoria, IL, USA Sign in to contact 1968 MG MGC GT	Topic Creator (OP) Dec 9, 2016 07:29 AM Joined 15 years ago 887 Posts

Asking for a friend.

My 1974MGB GT had the IMG_7940 style rear end in it. Do the rubber bumper MGBs have the one as shown in IMG_7939?

Thanks,

Bill

1974 MGB GT 4speed/Overdrive
1969 MGC CT Automatic

IMG_7939.JPG 43.2 KB

IMG_7940.JPG 41.7 KB

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Re: Rear End on early versus rubber bumper MGBs #2
zdorsch Zach Dorsch Columbia, SC, USA Sign in to contact 1973 MG MGB MkIII	Dec 9, 2016 07:32 AM Joined 14 years ago 300 Posts

No, img7939 is the banjo rear axle assembly used on the early B's. All GT's came with the tube axle as did all RB B's.

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Re: Rear End on early versus rubber bumper MGBs #3
windjammerusn40 windjammerusn40 McCord East Peoria, IL, USA Sign in to contact 1968 MG MGC GT	Topic Creator (OP) Dec 9, 2016 07:35 AM Joined 15 years ago 887 Posts

Thanks Zach. That means that you would still need a case stretcher to remove the differential gears from the rear end of a RB MGB whether a tourer or grand tourer.

Bill

Edited 1 time(s). Last edit at 2016-12-09 07:36 AM by windjammerusn40.

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Re: Rear End on early versus rubber bumper MGBs #4
GlennMGB Glenn G Fort Worth, TX, USA Sign in to contact 1965 Triumph TR4A 1967 MG MGB GT "Rose"	Dec 9, 2016 09:46 AM Top Contributor Joined 10 years ago 1,638 Posts

Quote: need a case stretcher

The case stretcher shown in the manuals is designed to help you remove the differential carrier. It is not strictly necessary, as you can remove the carrier with a suitable pry bar, being careful not to damage the gasket surface of the case. You would need to remove the carrier to change the ring and pinion, but not to change the differential gears inside the carrier.

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Re: Rear End on early versus rubber bumper MGBs #5
Chalky David White Coventry, Warwickshire, UK Sign in to contact 1979 MG MGB GT	Dec 9, 2016 10:17 AM Joined 9 years ago 1,442 Posts

You don't need to pry the diff out. 2 methods.

1 remove axle and clamp on bench nose down. Place loads on the ends of the axle and it will spread the casing.

2 what I did. Support car on axle stands. Remove half shafts undo bearing caps. Rotate input shaft and the thrust will push the diff out. To reassemble I used the bearing caps and bolts to pull the diff back into the casing.

Edited 1 time(s). Last edit at 2016-12-09 10:19 AM by Chalky.

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