The Ford Barn - View Single Post

john charlton · 09-13-2017, 05:11 AM

Looks to me if the damage has been done by the crank journal pounding in the babbit, balance problem ??? The oil groove is mostly worn away which would allow the crank to drop which means for sure the other two main bearings are shot as well ,certainly the centre one . It looks like that loose bit of babbit is from a thrust face ,in practise a partially blocked return tube will not affect lubrication but will contribute to a leaking rear main seal .In this case by the state of that rear cap it must of had a spectacular leak anyway . Pull the motor and send it off for a bottom end rebuild sad to say .After 17000 miles it should not be in this condition does it have any form of guarantee ???

John in very windy Suffolk County England .

09-13-2017, 05:11 AM	#2
john charlton Senior Member Join Date: May 2010 Posts: 1,304	Re: Cracked Rear Main Looks to me if the damage has been done by the crank journal pounding in the babbit, balance problem ??? The oil groove is mostly worn away which would allow the crank to drop which means for sure the other two main bearings are shot as well ,certainly the centre one . It looks like that loose bit of babbit is from a thrust face ,in practise a partially blocked return tube will not affect lubrication but will contribute to a leaking rear main seal .In this case by the state of that rear cap it must of had a spectacular leak anyway . Pull the motor and send it off for a bottom end rebuild sad to say .After 17000 miles it should not be in this condition does it have any form of guarantee ??? John in very windy Suffolk County England .