<VV> Cam bearing, lifter galley wear

[corvairs]

Yes, we have rebuilt MANY Corvair engines over the years. The lifter 
bore problem raised it's ugly head as early as the 1970's - although  we 
only ran into it about 1 out of 20 engines. The problem is, the 
situation has certainly NOT gotten better as the blockas have gotten 
older AND it's a VERY bad problem to discover after you've just spent a 
fortune in time and money (same thing) doing a complete rebuild. Lon

Chuck Kubin wrote:

>Hey gang,
>  Assuming any one engine hasn't been run without oil, how much wear would you anticipate there would be to the lifter galleys and cam bearings?  These parts are always at least partially submerged, are they not? I know lubricated parts wear, but to what extent?
>  Someone who is always inside engines might see a lot of wear, but HOW often? The lifters especially would seem to have a significantly-large bearing surface considering how little they move. Is this a common problem, or are we killing a fly with a cannon?
>  I agree with the philosophy that a couple of thou out of round is easier to live with than the cost and brain damage of trying to correct it. Also, how significant would the wear have to be for the experts among us to consider addressing the issue or trashing the block?
>  The solution of shaving a couple thou off the block to get the lands back into tolerance seems like a good solution to me. Like Tony, I don't believe any of the bolt-ons are machined close enough to make a difference. Also, how much closer CAN you move the piston to the head without getting into trouble? 
>   
>  Chuck Kubin
>
>
>
>			
>---------------------------------
> Yahoo! Mail - Helps protect you from nasty viruses.
> _______________________________________________
>This message was sent by the VirtualVairs mailing list, all copyrights are the property
>of the writer, please attribute properly. For help, mailto:vv-help at corvair.org
>This list sponsored by the Corvair Society of America, http://www.corvair.org/
>Post messages to: VirtualVairs at corvair.org
>Change your options: http://www.vv.corvair.org/mailman/options/virtualvairs 
> _______________________________________________
>
>  
>