[DeTomaso] Dogbone airfilter questions

Thu Nov 3 10:14:15 EDT 2011

There's a project for you, find out the ambient temps in the engine
compartment versus outside and the cycle time for "stale" air to be
replaced by "new" air.  ELEPHANT EAR EQUIPPED CARS....NEVERMIND.

Michael
On Nov 3, 2011 10:10 AM, <gow2 at rc-tech.net> wrote:

> The issue I see with the dogbone is the intake sits right above the
> headers. A run on the dyno is one thing but extended driving would be
> taking air from a very heat saturated area.
>
>
> > I think the 1 hp loss was comparing a Dogbone to NOTHING, an open carb
> > susceptible to dust, dirt, sand, gravel and other debris.
> > Anything is going cause a loss by being a little restrictive, therefore a
> > loss of 1 hp seems pretty doggone good to me.
> >
> > Michael
> > On Nov 3, 2011 9:52 AM, "Mikael" <mikael_hass at mail.tele.dk> wrote:
> >
> >> Thanks for answers. After Summit'ing a bit, I found that I can actually
> >> get
> >> an offset 14" base, needed to clear the rear lid. It's almost as if it
> >> was
> >> designed to help Pantera owners, but it's actually to clear the GM HEI.
> >>
> >> If I combine that with just a 2" tall filter element and a filtered top,
> >> I
> >> get approx. 220 square inches of area. The dogbone with 2 filters give
> >> approx. 110 sq ", and with 4 filters 220 sq ". And I get more visibility
> >> out
> >> of the rear window, plus it's adjustable (by buying 14" filters of
> >> different
> >> heights). Plus I save $200. And since some of the air comes from above
> >> instead of all of it having to turn 90 degrees to enter the carb, I'm
> >> sure
> >> it's less restrictive than the dogbone. Maybe not enough to see even one
> >> HP
> >> on a dyno, but still :-)
> >>
> >> So here's what I ended up with:
> >> http://www.summitracing.com/parts/SUM-239142/
> >> http://www.summitracing.com/parts/TRD-2231/
> >> http://www.summitracing.com/parts/TRD-2430/
> >> Total cost $115
> >>
> >> Mikael
> >>
> >> -----Oprindelig meddelelse-----
> >> Fra: Will Kooiman [mailto:wkooiman at earthlink.net]
> >> Sendt: 3. november 2011 14:24
> >> Til: 'Roland Jaeckel'; 'Mikael'; detomaso at realbig.com
> >> Emne: RE: [DeTomaso] Dogbone airfilter questions
> >>
> >> I have seen this discussed several times since I've been involved with
> >> Panteras (~10 years).  Some say it is restrictive.  Others say it isn't.
> >>
> >> We tested the dogbone during a dyno day in 2005.  The top dog made 347
> >> HP
> >> at
> >> the rear wheels.  We removed the dogbone air cleaner, and the power
> >> jumped
> >> to 348 HP.  This was on a 377 stroker, dogbone, no spacer between the
> >> air
> >> cleaner and carb, and single filters on each side.
> >>
> >> It was also in Houston in the summer (hot).
> >>
> >> I've seen too many people say that it is restrictive, though.  I'm
> >> guessing
> >> that it depends on the application.
> >>
> >> -----Original Message-----
> >> From: detomaso-bounces at realbig.com [mailto:detomaso-bounces at realbig.com
> ]
> >> On
> >> Behalf Of Roland Jaeckel
> >> Sent: Thursday, November 03, 2011 4:41 AM
> >> To: Mikael; detomaso at realbig.com
> >> Subject: Re: [DeTomaso] Dogbone airfilter questions
> >>
> >> I had it on my 427 stroker.
> >> It was restrictive even with two filterelement on both side.
> >> It sucks hot air from the engine compartment, whitch also limits the
> >> power.
> >>
> >> I had a big airfilter housing from a Mercedes G 400 CDI diesel in my
> >> right
> >> wheelhouse and an air openig to the side.
> >> That did the trick. Quite on full throttle and no power loss when warm.
> >>
> >> Roland
> >>
> >> ----- Original Message -----
> >> From: "Mikael" <mikael_hass at mail.tele.dk>
> >> To: <detomaso at realbig.com>
> >> Sent: Thursday, November 03, 2011 10:09 AM
> >> Subject: [DeTomaso] Dogbone airfilter questions
> >>
> >>
> >> >I know this has been discussed, and on the PI Forum I searched and got
> >> a
> >> >lot
> >> > of info, but no real conclusion. First, the reason I want it is not
> >> bling,
> >> > it's so I can look out my rear window. But I don't want to restrict
> >> > performance.
> >> >
> >> >
> >> >
> >> > Here are some of the questions that are still open for me:
> >> >
> >> > -Who has it, are you happy with it?
> >> >
> >> > -Is it restrictive, I need air for a 600HP 408 engine, using a single
> >> > Holley
> >> > 850?
> >> >
> >> > -If the filter area is the restriction, can I just double filter it,
> >> two
> >> > on
> >> > each side?
> >> >
> >> > -If it's the distance above the carb, how far is it from the top of
> >> the
> >> > vent
> >> > tubes?
> >> >
> >> > -The distance over the carb could be remedied by a carb to air cleaner
> >> > spacer?
> >> >
> >> >
> >> >
> >> > Of course if Holley has done the work properly, it won't restrict flow
> >> on
> >> > the biggest 5 1/8 neck carb, and won't be too close to the vent tubes.
> >> > Have
> >> > they?!
> >> >
> >> >
> >> >
> >> > Summit has Holley version for a whopping $300
> >> >
> >> > http://www.summitracing.com/parts/HLY-64280/
> >> >
> >> >
> >> >
> >> > Mikael
> >> >
> >> >
> >> >
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