Hi chris.Cleavite is a alloy of aluminum, They alloy it to make it softer as it is too hard for a bearing.The damage you are describing sounds like a Acid problem.Some one did not change oil ? At least its better than Babbit. Jim McMullan 300 F > [Original Message] > From: christopher beilby <thelastbestgenius@xxxxxxxxxxx> > To: <Chrysler300@xxxxxxxxxxxxxxx> > Date: 11/7/2005 2:14:26 AM > Subject: [Chrysler300] how tough are 300C 392 conrod bearings? > > 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 > > > > > > To send a message to this group, send an email to: > Chrysler300@xxxxxxxxxxxxxxx > > For list server instructions, go to http://www.chrysler300club.com/yahoolist/inst.htm > Yahoo! Groups Links > > > > > > > ------------------------ Yahoo! Groups Sponsor --------------------~--> Get fast access to your favorite Yahoo! Groups. Make Yahoo! your home page http://us.click.yahoo.com/dpRU5A/wUILAA/yQLSAA/8LmulB/TM --------------------------------------------------------------------~-> To send a message to this group, send an email to: Chrysler300@xxxxxxxxxxxxxxx For list server instructions, go to http://www.chrysler300club.com/yahoolist/inst.htm Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/Chrysler300/ <*> To unsubscribe from this group, send an email to: Chrysler300-unsubscribe@xxxxxxxxxxxxxxx <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/