[6pack] Wanted - dizzy/oil pump drive and a warning about new oil pumps

[Foster, Stan]

This was a standard TR6 oil pump. The inner lobed part was stuck solid due to
a fragment of aluminum. I'm not 100% sure if the fragment was between the
lobes and the cylinder or between the cylinder and the case but the net result
was a totally wedged shaft. The stress on the dizzy drive gear sheared the pin
and fractured the gear. With the fragment removed (and the top of the shaft
reground after the hammering) the pump turns normally.

Stan

-----Original Message-----
From: Ruffner, James A *HS [mailto:JAR7U at hscmail.mcc.virginia.edu]
Sent: Saturday, June 21, 2008 11:19 PM
To: Foster, Stan; 6 Pack
Subject: RE: [6pack] Wanted - dizzy/oil pump drive and a warning about new oil
pumps

What kind of oil pump are you using?  All the pumps I've seen on the TRs are
outer cylinder with the inner "lobed" rotor piece that is driven by the
distributer/shaft/cam.  It is not going to be "jammed."  Anything big enough
to jam it will break the "tongue" on the shaft, or crack the whole body.  Not
likely.  I've seen them with a washer having been sucked into the intake (the
screen had dropped off the intake) and all it did was wear a groove on the end
of the rotor and outer cylinder.

Also, you mention aluminum, and a "vane" construction.  Are you using some
kind of after-market design?