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robert1839
Tristan Cook
5579 Timber Ridge Dr, Mt Vernon, Skagit, Washingto
(118 posts)

Registered:
05/06/2013 11:11PM

Main British Car:
MGB GT 1972 Buick 215

rear end
Posted by: robert1839
Date: October 07, 2013 01:15AM

so over the last few months of my project people have been asking what i am going to do about the rear end from the increase in power. i have always told them that i believe that's how they came from the factory with a standard MGB diff but they make a good point. that diff probably cant handle the increased power for long and how i would be driving wont help at all so my plan is to use the standard diff and try to be gentle with it till i can afford to get a stronger diff. so how have you all done it? what car did you get your diff out of i am looking more of a limited slip diff if i am going to have to change it all. has anyone just left the standard diff how has that worked out did it break or did it cope well? regardless if the stock diff works fine or not i plan on replacing it


Moderator
Curtis Jacobson
Portland Oregon
(4577 posts)

Registered:
10/12/2007 02:16AM

Main British Car:
71 MGBGT, Buick 215

authors avatar
Re: rear end
Posted by: Moderator
Date: October 07, 2013 05:44AM

I used the original axle for several years before installing a narrowed Ford axle. The MGB axle/diff is plenty strong for most any 215 engine. The more important issue is gear ratio. You may actually like the ratio, as these things are largely a matter of taste, but IMHO 3.909:1 is low enough to make starting from 2nd easy and reasonable. On the highway your engine will be rev fast and therefore be louder/busier, and you won't get great fuel economy. I think you'll do well to save this part of your project for later although it means two trips to a driveshaft shop.


MGBV8
Carl Floyd
Kingsport, TN
(4516 posts)

Registered:
10/23/2007 11:32PM

Main British Car:
1979 MGB Buick 215

authors avatar
Re: rear end
Posted by: MGBV8
Date: October 07, 2013 04:29PM

Been running the stock rear with my 215 for 12+ years. Curtis is right, it's plenty stout.


robert1839
Tristan Cook
5579 Timber Ridge Dr, Mt Vernon, Skagit, Washingto
(118 posts)

Registered:
05/06/2013 11:11PM

Main British Car:
MGB GT 1972 Buick 215

Re: rear end
Posted by: robert1839
Date: October 07, 2013 07:18PM

thank you for the info i will be sure to keep this in mind for the later date


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