The shaft is pressed, possibly pinned, depending on manufacturer.
Your second point, I haven't done it so can't speak from experience, but it sounds like an option. If swapping end covers though, I would make sure that the ports are in the exact same location.
Glen
--Previous Message--
: I received my TR6 oil pump rebuild parts
: that I am planning on using for the
: 1500 oil pump conversion. I have
: several questions for you guys,
: primarily for Steve W. and Glen. I
: will post pictures later to clarify
: what I am asking about but I am too
: impatient to not start asking.
:
: Steve posted the pictures linked below
: in an earlier thread.
:
: http://public.fotki.com/jr2dad6888/oil-pump/11092014-001.html
: and
:
: http://public.fotki.com/jr2dad6888/oil-pump/11092014-002.html
: This is a converted cast iron
: 4-cylinder pump.
: Compare those pictures linked above to
: the TR6 pump picture linked below
: (thanks to Richard Good for his
: picture).
:
: http://www.goodparts.com/shop/published/publicdata/GPSHOP/attachments/SC/products_pictures/Oil%20Pump,%20TR6_enl0w.jpg
:
: Question #1 involves the drive on the
: end of the 1500 and TR6 pump shafts.
: The 1500 pump has a slot on the end of
: the shaft to engage the distributor
: drive gear. The TR6 pump shaft is
: shorter and has a male tang instead of
: a slot. Did you guys press the 1500
: pump shaft out of its rotor and press
: it into the TR6 rotor? I did not see
: any welding on Steve's photographs that
: suggested an extension was made for the
: TR6 rotor shaft.
:
: Question #2 is more general... sort of
: a "why this approach?"
: question. I only have one old cast
: iron 6-cylinder pump but I know that
: the major features concerning mounting
: and port locations cannot have changed
: when the aluminum bodied pump was
: introduced. The 6-cylinder pump is
: longer than the 4-cylinder pump BUT the
: two pumps have the same diameter boss
: to center them in their mounting hole
: in the block. They also have their
: pickup tube and discharge holes in the
: same locations. What is different is
: the spacing of their three mounting
: bolts. My question is... why make a
: rotor housing spacer to accommodate the
: longer 6-cylinder rotor? Why not take
: a complete TR6 oil pump and mill its
: mounting holes into slots? You could
: then bolt the complete 6-cylinder pump
: onto the 4-cylinder engine with only
: needing to change the length of the
: pickup tube... or using the pickup tube
: and end plate from a 4-cylinder pump.
: Making the spacer seems like a whole
: lot more work than modifying the pump
: body mounting holes.
:
: Again, I'll post pictures later but
: please let me know what you did
: concerning the rotor driveshaft and the
: tang vs slot.
:
: Thanks,
: Doug L.
:
:
:
:
:
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