Re: [AMC-list] How much HP does an oil pump use

[tom jennings <tomj@xxxxxxx>]

I was going to propose something like that! Did you measure oil pressure
with the 1hp drill going?

It's not the same circumstances as a hot running motor of course but it gets
us within the ballpark I think. Hot oil is thinner, and the rotating engine
would uncover squirt holes, and I have no idea how oil passageways leading
to rotating bearings behave.

But if you could get say 10psi with a 1 hp drill, and as Mark points out,
the oil pump is driven by a fat screwdriver, it can't be more than a few hp.


On Tue, Jun 23, 2009 at 07:11, Wayne E Lamothe <superglider@xxxxxxxx> wrote:

> OK, not sure if this is apples to apples but....  When I pre lubed my 401
> the other night it took a 1hp drill to keep the pump going after prime.
> The smaller drill stopped when prime was reached and it took all the
> grunt of the 1hp elec drill to keep the oil going.  That was with 10-40
> weight oil.
>
> Does that help?
>
> Wayne
> Wayne & Lisa (Skeezix), Bolton Landing, NY
> AMO#8454, http://www.superglider.thinkhost.com/
> 69 Ambo coupe, 401, M12, 66 Ambo 990 Wagon, 327,PW,PB,PS,posi,AM/FM,AC
> 2003 Harley FLHTCI, 2000 Jeep GC Limited 4.7
> 2001 Cherokee, 2002 Caddy Seville Northstar V8
>
>
>
> On Tue, 23 Jun 2009 14:00:29 +0000 (UTC) Wrambler
> <wrambler242@xxxxxxxxxxx> writes:
> > Maybe easier to figure out what torque it takes to snap off the drive
> > mechanism?
> > Then you have an idea of how much the max horsepower loss could be?
> >
> > AMC drives the pump with a simple slotted pump.
> > What does it really take to break that or wear it out quickly?
> >
> > I bet somewhere, someone knows the true answer!
> > How hard would it be to drive a drysump pump with another motor and
> > dyno the engine with and without the pump in play?
> >
> > Not something the average shop would bother with, but I bet it was
> > done.
> > GM moved to front crankhaft mounted pump in the 80s on the fwd
> > engines.
> > I bet they knew exactly how much HP they were talking about when
> > they made the move, though maybe not...
> >
> > Mark Price
> > Morgantown, WV 26508
> > 1969 AMC Rambler, 4.0L, EFI, T-5
> > 2004 Grand Cherokee Laredo, 4.7L, Quadratrac II
> > "I realize that death is inevitable.
> > I just don't want to be around when it happens!"
> >
> > ----- Original Message -----
> > From: "Sandwich Maker" <adh@xxxxxxxxxxxxxxxxx>
> > To: amc-list@xxxxxxxxxxxx
> > Sent: Tuesday, June 23, 2009 9:42:55 AM GMT -05:00 US/Canada
> > Eastern
> > Subject: Re: [AMC-list] How much HP does an oil pump use
> >
> > " From: David Crooks <david.crooks@xxxxxxxxxxxx>
> > "
> > "
> > "
> > " But the basic question, how much power does an oil pump consume,
> > is a
> > " good one!  Probably more than you suspect, although I agree, it's
> > not
> > " the place to go looking for a little more ommph, unless you plan
> > on a
> > " rebuild after every drive (like a professional race car).
> >
> > even so, the balance between pump loss vs. friction due to poor
> > oiling...
> >
> > iirc and fwiw nascar motors carry a few gallons.
> >
> ________________________________________________________________________
> > Andrew Hay                                  the genius nature
> > internet rambler                            is to see what all have
> > seen
> > adh@xxxxxxxxxxxxxxxxx                       and think what none
> > thought
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-- 
All of your arguments are invalid.
Enjoy your unstable system.
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