<VV> Cam Bearing Wear

[JVHRoberts at aol.com]

Well, later VW Type 1-3 engines, and all Type 4 motors had cam bearing  
inserts, like main bearings, but smaller. Perhaps if someone made a set of  
bearings that could be fitted to a bored crankcase? Although boring the  crankcase 
and using a built up cam using spray metal, brazing, etc., might be  more 
straightforward. 
 
In a message dated 2/5/2006 2:20:19 P.M. Eastern Standard Time,  
tampatexan at tampabay.rr.com writes:

Aircraft  crankcases wear out too...  they are repaired by welding up the  
cam/crank journals and then lineboring back to specifications.  No  
reason (other than cost) why this couldn't be done to a Corvair  case...

Jim Houston
Brandon, FL

Smitty Smith  wrote:

>Smitty says:  This is directed to any who rebuild  engines frequently.  I 
don't need to know right now but the handwriting  is on the wall in the future 
for all of us.  What are you doing about  worn blocks that won't even come 
close to meeting specs on cam  clearances.  Are you lieing to yourselves and your 
customers that  everything is alright?  Are you simply not taking the 
measurements and  figureing a new cam will fix it all?  Has anyone tried metal spray 
or  chrome buildup to close the gap?  How about other solutions?  The  one 
thing I don't want to hear is that you build a lot of engines, and worn  out 
blocks are not a problem.