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"
-----Original Message-----
From: Ed Van Scoy [mailto:ed@vetteracing.com]
Sent: Saturday, January 25, 2003 5:54 PM
To: DrMayf
Cc: Glenn Ridlen; Russel Mack; Dave Dahlgren; rgribble;
land-speed@autox.team.net
Subject: Re: Dry sump
I run a total loss system, and a dry sump (off the crank). I
can spin the pump easily with my hand, so I really doubt it is
eating up much HP. MSD claims that the quality of spark is
more important than the quantity of spark.... Not really sure
what they mean by that , but I have a gage (actually a box
with 3 L.E.D.'s) that is wired between the MSD box and the
power source (battery) The green LED lights when the power to
the MSD is optimal, yellow means marginal, and red means
battery needs charging. MSD makes it ONLY for total loss
systems. Never seen another one on another car, but I guess it
is another layer of security for me.
Ed
>> Russ, #1226B
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