<VV> The great puzzle

[BobHelt at aol.com]

Please tell me whether I have your story right.
 
You rebuilt the engine using new pistons and rings and had the heads done  
by a machine shop. prior to that you had no oil burning problems. Right?
 
Then it burned no oil at all, except at an idle speed where the drivers  
side was the culprit. Drive it on the highway for 50 miles and it uses no oil  
and does not smoke. Right?
Let it idle and you got smoke. Rev it and drive it and you got no smoke.  
Right. The engine has normal blowby that is now expelled into the atmosphere. 
 Right?
 
Drive it and no smoke. Shut the engine off and then pull the heads and no  
oil in the cylinders. Pull the carb and no oil under it.  But let it idle  
for a while, shut it off and pull the head and you do find oil in the 
cylinders.  Pull the carb and you find oil under it too. Right?
 
Then you disassembled the engine, checked the parts for proper fit and  
reassembled it. Same problem. Right?
 
Is the blowby picking up oil and it being returned to the head?  
 
 How is oil getting under the carb? To me that is the key. It would  seem 
that any oil from the rings or guides would never get back up the carb  but 
would be retained in the cylinder.
 
Please verify or refute.
Bob Helt
 
 
In a message dated 12/1/2014 10:16:08 A.M. US Mountain Standard Time,  
virtualvairs at corvair.org writes:

Please  put your thinking caps on for this one. I have just had a 110 
engine rebuilt (  twice). It burns oil on one side. I know because I set up a 
dual  muffler   It burns oil at high vacume. ( not at full speed). Only at  
idle. So much so that after you park and let the engine sit for a few minutes  
there is a pool of oil in the driver side cylinders. Ps. There is a pool of  
oil under the carb on the driver side.   The Pistons are new from  Clarks.  
The cylinders are new.  And match on size. We checked  that.  The heads 
have been re done ( twice). What are we missing?   Ps again The crossover tube 
was disconnected along time ago.  Let's see  we specked the Pistons for 
micro cracks. And ran the engine with a 1/2 cut  valve cover to make sure there 
wasn't flooding I. The driver side.    What have I missed. Any good ideas 
would be great.  Thanks