I'll let Steve offer any more details re his experience but if there was no noticeable gain, I would suggest that the tolerances were all within limit and there were no excessive bleeds, which is a good thing.
Glen
--Previous Message--
: Thanks. I didn't want to start pressing
: on the shaft only to find out that I
: was making a big mistake.
:
: The second question was rhetorical (for
: the most part)... especially since I
: don't want to buy a new TR6 pump just
: to cut on it. However, being a bit
: anal, I laid the two pump body bolt
: patterns out in CAD so I could
: superimpose them. The mounting
: patterns are close but different. It
: would be possible to modify the TR6
: pump body to fit the 4-cylinder if the
: perimeter of the 6-cylinder aluminum
: housing is not "too big" to
: fit properly against the 1500's block.
:
: Now that I know the idea is to press
: the shafts in/out of the inner rotor I
: can start the conversion process using
: the parts I have. As with most my
: projects, starting one project requires
: another task be carried out first. In
: this case I have to do a bit of work on
: the drive belt pulleys on my mill
: before thinking about cutting any
: metal.
:
: Steve said he did not notice any really
: change in the oil pressure when he ran
: these pump conversions. The rotor
: length difference should equate to a
: 30% increase in flow using the
: 6-cylinder pump parts. However, I
: anticipate that if the relief valve is
: working properly you aren't going to
: see that increased flow as pressure.
: You would have to have excessive wear
: and/or large clearances like our 1500
: to see any change in oil pressure with
: these larger/longer pump rotors.
:
: Doug L.
:
:
: --Previous Message--
: Yeah Steves picture brought back some
: memories, not all that good...!
: 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
:
:
:
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