[Chrysler300] how tough are 300C 392 conrod bearings?

["christopher beilby" <thelastbestgenius@xxxxxxxxxxx>]

As part of getting ready for my earlier mentioned 'aussie new 300C versus 57 
300C' meeting Wednesday, this afternoon I have just put new set of standard 
conrod bearings into the 392 motor.

The bearings I took out were dated 1969, Clevite, and although not showing 
any wear through to copper, were pretty sad - widespread pock marks, mini 
cratering, and on one shell, a whole centre piecs about 2/3rds size of small 
pea on one side area of centre of shell was gone, down to steel 
shell/backing. Only about 4-5 shells looked like normal worn/used shells you 
would pull from other V8 motors.

Any one got any clues re what is reason/cause, or do 392 hemis really load 
their shells more than other motors.  Main bearings looked great, and I do 
not normally rev motor over 5000 rpm, but do not know what former owner/use 
was.  I know with poured white metal vintage bearings, they can age, this 
what these seem like as a first look, maybe cause, but in this case would 
aging be caused by fatigue, rather than time?

Weather forecast for Wednesday is for clearing - normally dry South 
Australia is close to issuing localised flood warnings after rain that 
started yesterday - hope they are right, my ex Los Angeles rust free 300 got 
wet this morning going to garage with a better big hoist to make it easier I 
pull the sump.  The bearings just put in came from Egge, are I think King 
(Israel) , so I hope OK.

yours from oz, Christopher




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