13 Apr 12 16:35, Mark Hofmann wrote to Roy Witt:   
      
    RW>> For solid lifter engines, especially that 30/30 Duntov cam, required   
    RW>> valve   
    RW>> adjustments about once a week; or after a hard run on race day.   
      
    MH> Is there an adjustment that can be made to stop the "cold engine   
    MH> value tap" or whatever it is called?   
      
   No. One could make an attempt to fix that by removing said lifter, take it   
   apart and clean it, maybe replace the spring. As long as there is engine   
   valve spring pressure on that weak lifter, it will leak down and need to   
   be pumped up by engine oil pressure before the valve tap goes away.   
      
    MH> It really isn't worth taking off the re-sealed value covers at this   
    MH> point. I think I'm going to try the 0W-20 synthetic on my next oil   
    MH> change.   
      
   You might want to re-think that. By going heavier with your oil, rather   
   than lighter. The heavier the oil, the less likely the lifter will leak   
   down. Give 10w-40 oil a try.   
      
                   R\%/itt   
      
      
     ... Only those who will risk going too far can possibly   
     ... find out how far one can go ~ TS Eliot   
      
      
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