Engine and Transmission Tech

tips, technology, tools and techniques related to vehicle driveline components

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britcars
Phil Ossinger
New Brunswick, Canada
(346 posts)

Registered:
02/02/2009 07:58PM

Main British Car:
1977 MGB Roadster, Rover 3.5 ADVENTURE BEFORE DEMENTIA!

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Rear Crank Seal Leak
Posted by: britcars
Date: September 21, 2014 03:12PM

I have a serious leak at the rear main seal (old rope type) in my 3.5 Rover that I have to look at very soon. Any tricks for removal and replacement? There is a tool available to remove the old seal. Can a new neoprene seal be installed without removing he crank?
Thanks!!


minorv8
Jukka Harkola

(269 posts)

Registered:
04/08/2009 06:50AM

Main British Car:
Morris Minor Rover V8

Re: Rear Crank Seal Leak
Posted by: minorv8
Date: September 22, 2014 04:08AM

I doubt that you can get the rope type seal out with the crank in situ. Depends on whow tight it sits in the groove of the block. Two piece neoprene seal can in theory be fitted with crank in block but how easily it is damaged during installation ? One piece neoprene seal will not fit without machining. All these based on ancient memories of 1974 vintage block.


roverman
Art Gertz
Winchester, CA.
(3188 posts)

Registered:
04/24/2009 11:02AM

Main British Car:
74' Jensen Healy, 79 Huff. GT 1, 74 MGB Lotus 907,2L

Re: Rear Crank Seal Leak
Posted by: roverman
Date: September 23, 2014 11:31AM

Back in the day, I would rough counterbore the rear main cap,(two at a time, on a lathe). I would then install the roughed cap, and finish machining the block/cap, to receive a TR8+ seal. Never look back. Good luck, roverman.
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