[SEL] Reaming valve stem tower

[Richard Strobel]

Howdy all;
  I'd like to ream my exhaust valve stem tower a little larger in dia. to 
clean it up.  Question I've had for a long time...if I use a fixed dia. 
reamer, and use a tap handle on it, do I need a pilot guide?..IOW, can I do 
it by hand?

  I know on some dad had, there was a pilot when it first starts out.

  I'll leave it at that before I confuse myself :-)


  Max Morgan in Boise, Id., will build me new valves for 35 rockets 
each...not too bad IMO.

  TIA
RickinMt.