[DeTomaso] Dogbone airfilter questions

Thu Nov 3 10:10:13 EDT 2011

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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