[DeTomaso] New engine
MikeLDrew at aol.com
MikeLDrew at aol.com
Thu Dec 4 12:35:52 EST 2014
In a message dated 12/3/14 18 17 10, npdrs at maui.net writes:
> I guess there actually should be a good supply of cold
> air created by the turbulence of the roof back edge; any opinions?
>
>>>You're unlikely to see any benefit from any sort of airbox that is just
open to the rear. That's a low-pressure zone; air flows from under the
car, up and past the motor (where it's heated) and then exits through the mesh
grille and the opening in the decklid.
If you are committed to a fresh air induction system, your only real choice
is to duct air from below the car (which Ford actually did as stock, with
the 1973-74 cars, which used a duct and flexible hose mounted behind the
passenger seat drawing air up from the ground, and feeding it to the snorkel on
the air cleaner), or from the sides. Vendors sell 'elephant ears' which
replace the rear quarter windows. There are (basically) two styles--the ugly
kind, and the kind that don't work. The ones that look good don't stick
out far enough into the airflow to do anything. The ones that really work,
look a bit goofy, but they really DO work!
As for the air cleaner, Spectre likely has something that would work for
you:
http://www.spectreperformance.com/cat/air-boxes-14-low-profile?cat=C00000012
Note that the 14-inch diameter means that it might foul your decklid,
unless your intake was so tall that the bottom of the air cleaner was above the
top of the decklid. I do know one guy who is running one of these and he
made an air-cleaner-shaped notch in his decklid to clear it.
>
> >Other dilemma is the exhaust; currently I got a European GTS system; I
> could
> cut my flanges and welt flanges to fit Yates C3 heads. From looking trough
> Dan Jones tests it is clear that I should replace mufflers as Ansa once I
> got are too restrictive.
>
>>>Agreed. It's quite possible that the restriction isn't in the mufflers
themselves, but rather the four tips. The inside diameter of the
resonator tips is relatively tiny. FWIW current-production Pantera ANSA GTS
mufflers have tips that are slightly larger and have no resonator, and thus
(presumably) they flow much better. That would be a bolt-on solution which would
still knock some of the noise off, and you could sell your existing ones to
help fund the purchase (they are expensive!)
> >What would be the best option to replace Ansa mufflers; I would like to
> keep
> the stock look of four pipes angled up; this is the early, '71 car?
> Is there something already made available that would bolt onto my GTS
> headers or would I be best buying Magnaflow mufflers and replacing my Ansa
> mufflers?
>
>>>I have never seen a generic muffler setup that looked any good. Most
mufflers are too long, and they wind up looking really goofy on a Pantera,
especially one that doesn't have a large L-model rear bumper to help hide
them. Rich Boschert had ANSA-sized Flowmaster mufflers, but they were brutally
loud--they almost seemed like amplifiers rather than mufflers! And they
looked terrible too.
>
> >Other option, should I replace everything with 180 degree system; how
> much
> power is it really worth?
>
>>>What you get is style and a different sound. You'll never notice a
performance difference, and you will pick up weight plus enormous complexity
and hamper maintenance access.
> >Car will be combination of street and track, so it would be nice to keep
> cargo compartment in the back....
>
>>>In that case I'd forget the 180 idea.
Pat Mical has fabricated custom exhaust systems using 3-inch oval tubing,
which gets around the Pantera packaging constraints and allows for better
flow. But you're still stuck trying to find a halfway decent muffler to
use....
Mike
-------------- next part --------------
In a message dated 12/3/14 18 17 10, npdrs at maui.net writes:
I guess there actually should be a good supply of cold
air created by the turbulence of the roof back edge; any opinions?
>>>You're unlikely to see any benefit from any sort of airbox that is
just open to the rear. That's a low-pressure zone; air flows from
under the car, up and past the motor (where it's heated) and then exits
through the mesh grille and the opening in the decklid.
If you are committed to a fresh air induction system, your only real
choice is to duct air from below the car (which Ford actually did as
stock, with the 1973-74 cars, which used a duct and flexible hose
mounted behind the passenger seat drawing air up from the ground, and
feeding it to the snorkel on the air cleaner), or from the sides.
Vendors sell 'elephant ears' which replace the rear quarter windows.
There are (basically) two styles--the ugly kind, and the kind that
don't work. The ones that look good don't stick out far enough into
the airflow to do anything. The ones that really work, look a bit
goofy, but they really DO work!
As for the air cleaner, Spectre likely has something that would work
for you:
http://www.spectreperformance.com/cat/air-boxes-14-low-profile?cat=C000
00012
Note that the 14-inch diameter means that it might foul your decklid,
unless your intake was so tall that the bottom of the air cleaner was
above the top of the decklid. I do know one guy who is running one of
these and he made an air-cleaner-shaped notch in his decklid to clear
it.
>Other dilemma is the exhaust; currently I got a European GTS
system; I could
cut my flanges and welt flanges to fit Yates C3 heads. From looking
trough
Dan Jones tests it is clear that I should replace mufflers as Ansa
once I
got are too restrictive.
>>>Agreed. It's quite possible that the restriction isn't in the
mufflers themselves, but rather the four tips. The inside diameter of
the resonator tips is relatively tiny. FWIW current-production Pantera
ANSA GTS mufflers have tips that are slightly larger and have no
resonator, and thus (presumably) they flow much better. That would be
a bolt-on solution which would still knock some of the noise off, and
you could sell your existing ones to help fund the purchase (they are
expensive!)
>What would be the best option to replace Ansa mufflers; I would
like to keep
the stock look of four pipes angled up; this is the early, '71 car?
Is there something already made available that would bolt onto my
GTS
headers or would I be best buying Magnaflow mufflers and replacing
my Ansa
mufflers?
>>>I have never seen a generic muffler setup that looked any good.
Most mufflers are too long, and they wind up looking really goofy on a
Pantera, especially one that doesn't have a large L-model rear bumper
to help hide them. Rich Boschert had ANSA-sized Flowmaster mufflers,
but they were brutally loud--they almost seemed like amplifiers rather
than mufflers! And they looked terrible too.
>Other option, should I replace everything with 180 degree system;
how much
power is it really worth?
>>>What you get is style and a different sound. You'll never notice a
performance difference, and you will pick up weight plus enormous
complexity and hamper maintenance access.
>Car will be combination of street and track, so it would be nice to
keep
cargo compartment in the back....
>>>In that case I'd forget the 180 idea.
Pat Mical has fabricated custom exhaust systems using 3-inch oval
tubing, which gets around the Pantera packaging constraints and allows
for better flow. But you're still stuck trying to find a halfway
decent muffler to use....
Mike
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