[DeTomaso] 4" Elephant Ears - was; I've got to get going on my restoration

Tue Aug 3 15:43:01 EDT 2010

The comparison to wind blowing in an open window is not a valid comparison
because the cockpit is closed ( no air coming in from the floor) The engine
compartment has various openings and has been said to act like a vacuum
cleaner running down the road. besides the complexities of calculating the
air flow dynamics between the wheel well openings, the opening of the bottom
of the engine compartment the open rear window etc. I don't think you can
make a valid comparison because air comes in an open window. In tests I have
seen air comes  out the back engine compartment window (indicating positive
pressure) so open vent windows might serve as an outlet for air and not an
inlet ( hence the elephant ears blowing out at speed) I have been
experimenting with cold air induction and the only way to really know what
direction  what pressure and what temperature air is flowing in and around
the engine compartment is with an anemometer that measures air flow in  CFM
air pressure and air temperature. Once you have determined the available air
flow and temperature you can plan your air intake for your engine.
Boyd

On Tue, Aug 3, 2010 at 1:19 PM, <wkooiman at earthlink.net> wrote:

> Dawg,
>
> Do you know how big your ears are?  Are they 4"?
>
> Remember, your ears work so poorly that one flew off at BBORR.  I guess
> that was the pressure pushing it out and not the laminar flow pulling it.
>  Right?
>
>
> -----Original Message-----
> >From: Mad Dog Antenucci <teampantera at yahoo.com>
> >Sent: Aug 3, 2010 10:53 AM
> >To: Mike Thomas <mbefthomas at comcast.net>, 'Rob Dumoulin' <
> rob at dumoulins.net>, michael at michaelshortt.com, John Taphorn <
> jtaphorn at kingwoodcable.com>
> >Cc: 'pantera list' <detomaso at realbig.com>
> >Subject: [DeTomaso] 4" Elephant Ears - was;    I've got to get going on my
> restoration
> >
> >Yes to cooler denser air....
> >I started used an airbox in '96 before I got the ir-efi thinking it
> wouldn't hurt and it might even help while I was running open track and open
> road races..I don't know if it works or not. Scott Black hooked me up with a
> couple aero and design people like Pete Brock years ago who to me they were
> convinced the 4" ears probably stop working effectively at speeds much
> greater then a 100 mph.
> >
> >After Mike Trusty and Dick Drenske added the fuel injection I just left
> the intake ears on thinking if nothing else they loooked great. And I would
> have someone design and fabricate  a air box (thanks Goran for the
> offer) fabricated for the fuel injection but then realized I didn't own a
> race car and I really didn't want to hide the polished intake or throttle
> bodies so I still don't know if a airbox does or does not work on a Pantera
> using side intake induction.
> >
> >About a year ago at SilverState one of the Corvette guys asked me if I was
> going to add a airbox now that I had the fuel injection... and I said that I
> was......and he nodded his head and said, "yea good idea - you'll pick up
> more power".......
> >
> >And as he is saying this I realize there is no way  I am going to hide
> that intake and throttle bodies with a air box'. ;-)>
> >
> >
> >Mad Dawg Antenucci
> >Team Pantera Racing
> >The 1st & still the only vintage race team in open road racing
> >www.teampanteraracing.com
> >
> >--- On Tue, 8/3/10, John Taphorn <jtaphorn at kingwoodcable.com> wrote:
> >
> >
> >From: John Taphorn <jtaphorn at kingwoodcable.com>
> >Subject: Re: [DeTomaso] I've got to get going on my restoration
> >To: "Mike Thomas" <mbefthomas at comcast.net>, "'Rob Dumoulin'" <
> rob at dumoulins.net>, michael at michaelshortt.com
> >Cc: "'pantera list'" <detomaso at realbig.com>
> >Date: Tuesday, August 3, 2010, 5:20 AM
> >
> >
> >I intend to eventually install a system on my GT5 to draw air in through
> the
> >side windows/vents.  My aim is to have a source of cooler denser air for
> the
> >engine.  The current flow pattern has us extracting air from the engine
> bay
> >that is heated as it passes by the headers first.
> >
> >I have listened to the debate for years about the 4" ear requirement on
> the
> >side of the car.  The advocates say it is necessary for the ram air
> effect.
> >That may be so, however, I am not seeking to ram air into the carburetor.
> >We certainly are not benefiting from ram air in the stock configuration,
> so
> >I don't see why it is postulated as a requirement when ever someone
> inquires
> >about ingesting air from the side.
> >
> >I am confident that if the intakes tract is extended to an opening in the
> >side gill/window even without an ear, the engine will suck in all the
> cooler
> >denser air that it needs despite the theoretical boundary layer.  Lord
> >knows, it certainly rushes into my car when I roll down the driver's
> window
> >without the benefit of anything, like an intake stroke, creating a lower
> >vacuum.
> >
> >JT
> >
> >
> >----- Original Message -----
> >From: "Mike Thomas" <mbefthomas at comcast.net>
> >To: "'Rob Dumoulin'" <rob at dumoulins.net>; <michael at michaelshortt.com>
> >Cc: "'pantera list'" <detomaso at realbig.com>
> >Sent: Monday, August 02, 2010 11:21 PM
> >Subject: Re: [DeTomaso] I've got to get going on my restoration
> >
> >
> >> Remember that there has been quite a number of strings regarding the
> >> merits
> >> of side scoops and whether they really do any good unless they stick out
> >> far
> >> enough to extend beyond the boundary layer created by the car.  If I
> >> recall
> >> the figure was 6" to 8" out from the side of the car to actually "scoop"
> >> some air.  'Like Michael said, it's your car, but I sure wouldn't want
> >> mine
> >> looking like Dumbo on wheels . . .
> >>
> >> Something else I would think about too: if your car is an early '71, I
> >> assume it has all the bright work on it (bumpers, mirrors, window trim,
> >> etc.).  I recently saw an ad on EBay for an early '71 with steel group
> IV
> >> flares, center exhaust from 180's, etc, and somehow all that just didn't
> >> look right on a chrome bumpered car, having seen most Grp IV clones with
> >> bumpers off or all trim blacked out.
> >>
> >> K, that's my .02.
> >>
> >> Mike Thomas
> >>
> >> -----Original Message-----
> >> From: detomaso-bounces at realbig.com [mailto:detomaso-bounces at realbig.com
> ]
> >> On
> >> Behalf Of Rob Dumoulin
> >> Sent: Monday, August 02, 2010 6:56 PM
> >> To: michael at michaelshortt.com
> >> Cc: pantera list
> >> Subject: Re: [DeTomaso] I've got to get going on my restoration
> >>
> >> Thanks, Mike.  Why do I get the feeling you are preparing for a career
> in
> >> politics with those two answers?  Seriously though, I like the hood vent
> >> look, want to cut down on under car air pressure while gaining ducts for
> >> brake air, and want a closed box cold air system.  I also considered
> >> cutting
> >> a hole in my engine cover and placing the K&N in colder air above it.  I
> >> am
> >> about function on just about everything on the car except the hood
> vents.
> >>
> >>
> >>>
> >>> On Aug 2, 2010 8:59 PM, "Rob Dumoulin" <rob at dumoulins.net> wrote:
> >>>
> >>
> >>> Guys, working out of state is killing my restoration plans and spare
> >>> time.
> >>>  I hoped to be farthe...
> >>
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