BSA Owners' Club Workshop Discussions

The BSA Workshop => Singles => Topic started by: JOHN KAY on 28 Jul, 2019, 20:31

Title: MY B25 WOES AND CRANK UPGRADE PART 2
Post by: JOHN KAY on 28 Jul, 2019, 20:31
HI GUYS
JUST AN UPDATE > HAVE BORED OUT CRANKCASE OIL FEED OIL WAYS TO 3/16 AS PER WEBSITE
IN LAST POST TO INCREASE VOLUME USING DRILLBITS IN 1/64 STEPS TO  STOP DRILL WANDERING
AND PUT A TIGHT FITTING DRILL BIT IN PRESSURE RELIEF VALVE OILWAY TO STOP SWARF GETTING IN THERE > ALL SWARF FLUSHED OUT SO OILWAY TO PUMP NOW 3/16 AS IS PUMP TO SURFACE
WHERE O RING WILL SEAL . BE CAREFUL WHEN BORING OUT FROM PUMP SIDE AS IT IS ALL TOO EASY TO GO RIGHT THROUGH INTO CRANK SHAFT AREA AS I DID >  NOTE OILWAYS ARE MOSTLY
DRILLED AT AN ANGLE > I USED THE OIL PUMP GASKET AS A GUIDE TO ACCURATELY LINE UP WITH OIL PUMP OILWAYS WHICH ARE 3/16 AS STD > CRANK IS NOW FITTED WITH R+R STEEL CONROD AND CRANKCASES  NOW ASSEMBLED ALONG WITH OILPUMP ETC > NEXT STAGE WILL BE TIMING COVER ALTERATIONS I WILL KEEP YOU POSTED  BYE FOR NOW > JOHNBOY