[Vwdiesel] Piston selection--- (when reboring or re-ringing)

LBaird119 at aol.com LBaird119 at aol.com
Tue Apr 12 12:05:30 EDT 2005

With a 5 thou blade in cylinder and piston slides right through --on its own 
weight ?   NO
good for a diesel VW.  You need a bigger piston------  well you DIY's gets 
the drift ?---if NOT ?.
Leave it ALL to a good shop.  ----BUT make sure you tell them to fit on the 
THIGHT side of specks.

  I thought you were refering to a quick and easy way to check while the 
head was off.  :-)  This method would require pulling the engine nearly 
clear down.  Once you suspect it that much the the wise thing is to pull 
the engine and do those intermediate bearings too.  With an assembled 
engine, the easiest way to check is to use a bore gauge and measure 
the bore.  The pistons wear very little so you can use basically the new 
specs for the piston, subtract that from the measured bore and get your 
clearance.  You can also check for taper, out of round and all which is 
harder to do with a feeler gauge and also doesn't require a tear down 
just to measure.  :-)
  That's why I bought a pair of bore gauges.  Just haven't had need to use 
them since!  :-P

More information about the Vwdiesel mailing list