Ed:
put a 45/1 (stepup) geartrain on your pump shaft, hook up the suction and
pressure lines (as Grib suggested), put in a load of your racing oil, and
crank your speedwrench to 200rmp. (This should approximate the demand of
Glenn's engine.)
Please let me know if you still don't think that it takes much power, and
I'll readjust my guestimates.
Russ, #1226B
-----Original Message-----
From: Ed Van Scoy [mailto:ed@vetteracing.com]
Sent: Sunday, January 26, 2003 11:48 AM
To: rgribble
Cc: 'Ed Van Scoy'; 'DrMayf'; 'Glenn Ridlen'; 'Russel Mack'; 'Dave
Dahlgren'; land-speed@autox.team.net
Subject: RE: Dry sump
Grib;
Perhaps I was too inexact by the term "easy" - it is a bit
relative. What I meant tho was the pump can be used to prime
the motor (when on a stand) by using a "speeder" with a 1/2
socket to turn the pump with little effort (there we go again
- effort - another relative term) I think the vacuum gauge is
a damn good idea.
Keith I know I have confused you with all these "reletive"
terms.... Just remember the Law of Reletivity - That silly
rule in Alabama that you can't marry your sister........
Ed (80 & sunny in the desert on Super Bowl Sunday)
>Ed & List,
>If this is academic to you sorry, I post if for whoever wants
to know.
>
>As you know the important function of the dry sump pump is to
keep the
>engine in oil pressure. You set that pressure at the pump and
it only
>needs to be minimal to get the job done. (minimal pressure
equates to
>less HP to drive the pump) However, to increase the HP of the
motor you
>need to pull a vacuum on the crankcase. More vacuum means
more HP, till
>you get to an amount that you start pulling oil past the
valves. Close
>tolerance on the Dry Sump Pump gears gets high vacuum ratings.
>If your pump spins freely when open to atmosphere, that's OK,
but not
>when it's hooked up to the lines. If you cap the suction
ports of the
>pump and turn the pulley, it should have resistance and turn
back. If
>not it needs to be rebuilt. I intend to run a vacuum gauge on the
>suction side of the V6, just so I know where I'm running.
>
>"Do what others Won't and you'll do what others Can't for the
rest of
>your life"
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