Nylon Fans:

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Nylon Fans:

Postby h-bot » Thu Mar 07, 2002 10:24 pm

From: astreformula_REMOVE_834771_THIS_@yahoo.com


Hey Erik, I've got both hood vents and engine
compartment exhaust fans on my 76 Vega. The engine
compartment exhaust fans are for use on computers. They come
in various diameters. I've got two in my engine bay
area. The hot air exits out through the inner front
fender wheel house panel. Pix can be seen at
clubs.yahoo.com/clubs/northwesthbodyclub under Al's H-bodies


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Nylon Fans:

Postby h-bot » Fri Mar 08, 2002 1:04 am

From: denisst78_REMOVE_172547_THIS_@yahoo.com


i saw only one 400 serie nylon fan break, and it
was shortly after one guy used the fan to turn the
engine ..... it doesn't take lots of brains to know what
will happen after you use a plastic fan this
way...
BTW i'selling and using those fans for almost 10
years they rob HP yes, but they do cool a lot
it'S a
matter of choices,lots of HP and overheating or less HP
and a reliable car
( i'm not bitching Erik
here)
In my csae i did try electric fans and it was with
poor sucess...
Robert's idea of camaro or T/A
fender trap is good, i did see a guy around here with
old Polaris snowmobile air trap installed on to the
hood and it looked great
Denis


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Nylon Fans:

Postby h-bot » Fri Mar 08, 2002 5:54 am

From: erik_norway_REMOVE_614033_THIS_@yahoo.com


Robert,

That`s a real good idea only
problem is were do I cut the whole in the engine
compartment without weekening the chassi?

And do you
have a picture of them? I don`t seem to remember what
they look like!

Thanks for a good sugestion
Robert.

Erik
Oslo in Norway


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Postby h-bot » Fri Mar 08, 2002 6:02 am

From: erik_norway_REMOVE_401759_THIS_@yahoo.com


Thats what I have thaught of doing.

I have
an extra sett of those vents that is on my wagons
back fender.
I was thinking of molding them in on
each side of the cowl induction hood.

Just
hafto find out were the vacum is...
That can be done
by taping pices of light woll thred around the area
were I want it and take it for a spin. And the just
see what way the point.
Hopfully they rice a bit
from the hoot pointing backwords :)

I will not
risk the of weekening the frame of my car as I use it
at the track.

Thanks for great thaughts
John.

Erik
Oslo in Norway


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Postby h-bot » Fri Mar 08, 2002 6:13 am

From: erik_norway_REMOVE_706801_THIS_@yahoo.com


Actualy Flex-A-Lite takes less power at high rpm
it moved more air at idle then at highway
speed.

This is because of the flexing more rpm less pitch on
the blades and robs less hp.

And thats great
because idle is were you need masive air
movement.

I am not using any fan on my car only electric ones
front mounted.

A fan robs from 5-15hp 15 is the
big full size air cond fans.
On my Alfa they have
benched it to 7hp on a dyno at full rpm.
And yes it
will also recive an electric one :)

I thing a
big problem in cooling a V8 H body is getting the hot
air out of the engine compartment beacuse of the
tight fit.

Erik
Oslo in Norway


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Postby h-bot » Fri Mar 08, 2002 6:15 am

From: erik_norway_REMOVE_578731_THIS_@yahoo.com


Will not work at constand highway speed as there is preasure down in to the engine compartment at this speed.

Erik
Oslo in Norway


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Postby h-bot » Fri Mar 08, 2002 8:44 am

From: erik_norway_REMOVE_592870_THIS_@yahoo.com


Hey thats two of the same ideas I have in one car
how does it work?

Yes I know those fans as I
am working with big computers and have been studying
electronics.

I saw the pics so you only blow the hot air out in
to the wheel well and then it exits out of there
with the vacum that builds in the wheel
well?

On of those solutions should be eanough or?
I am
just woundering because by brackes are so hot when
racing at the track that the wheel well must be hotter
then the engine compartment =O

Yes I use
spesial Performance Friction Carbon Metalick brakce pads
the stock one melts... :O

Thanks for the very
good info.

Erik
Oslo in Norway


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Postby h-bot » Fri Mar 08, 2002 8:57 am

From: erik_norway_REMOVE_918177_THIS_@yahoo.com


As I sayed to.

This is not to say they all
are bad cause I have seen what they can do to cooling
a car and they work greate.

And yes I know
people do a lot of strange thins so what he did to it I
do not know.

But I am saying that afther
seing my friends arm I lost intrest in it.

Oh
sorry my mistake.
All mecanicla fans like that takes
hp to drive but the Flex-A-Lite compared to the
amount of cooling they take littel hp to
drive.

So hey no problem experience and opinions is what
this plase is all about :)

I will get back to
you of how my ned design works. It will be twin
electric fants controled bu a temp switch in two
stepps.

And the front section will be completly sealed
leading all the air through the radiator.
SO now teh
big question is will my air dam under the radiator
work or do I halfto build hood
ventialtors???

Anyone has a picture of this T/A fender trap?
Would
be nice.

Thanks aigain for more good tips and
tricks.

Erik
Oslo in Norway


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Postby h-bot » Fri Mar 08, 2002 10:52 am

From: mahoy78spyder_REMOVE_682037_THIS_@yahoo.com


<<quote>>Check out the hood vents i
installed in the hood of my 75 2+2 Monza.
<<end>>

Interesting vents Perry - I like that unique look. What car
did those vents originally come from? Also, did you
paint that car an original 1975 burnt orange color? If
so, how hard was it to find or have custom
mixed?

Ken


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Postby h-bot » Fri Mar 08, 2002 11:12 am

From: vegadad_REMOVE_657718_THIS_@yahoo.com


Bryan,
I'd recommend using a 3 core if you can
find one. I'm running one in my 72 Hatch and it works
really well. Also, have you had any problems breaking
motor mounts? If so I'd also recommend using a 17"
electric fan. The torque of the engine will put an engine
driven fanblade into any shroud you have and can ruin
your radiator. I learned the hard way.
john b (in
Virginia)


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Postby h-bot » Fri Mar 08, 2002 1:24 pm

From: monzapla_REMOVE_752110_THIS_@yahoo.com


I had my car repainted last summer and yes it is
suposed to be the original color with (fine metal flake
added) mixed from the 1975 color code on the car.
Believe it or not it is a "top of the line" Macco paint
job. I did ALL of the prep work, but it still took
them 3 tries to get it right. I wasn't very happy for
a while when it was being done. The 3rd time around
I told them I planned on attending some car shows
with it and THERE CRAPPY paint job would "speak" for
itself. To make a long story short, I did finally end up
with a nice paint job. I really don't know if I would
recommend them though. The hood vents are from a
280Z.
Perry


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Nylon Fans:

Postby h-bot » Fri Mar 08, 2002 3:42 pm

From: fyrftr50_REMOVE_763726_THIS_@yahoo.com


Hi John
I think I know what your refering to,
the present fan (stock I believe) has the ends of
each blade torn up, as if they have been driven into
something solid (I'll have to take a closer look to see
just what they were driven up against - it wasn't the
rad). The 2-core rad was a necessity as I couldn't find
a 3-core so I went with the 2-core and it performed
admirably even at idle with torn up fan blades in 100+
degree heat.
I haven't had the car long enough to
know about broken motor mounts (and it hasn't really
been driven since I got it back from California -
awaiting an engine rebuild).
I'd heard that the V6 has
a lot of torque but I just figured I had plenty of
space between a 2-core and the motor to not have to
worry about the fan into the rad (???Robert's
misgivings are because he has a V8 in the tight fitting
H-body engine bay, right???).
Thanks for your
insight John, I guess the Flex-A-Lite might not be a
great idea for my V6 then?Bryan


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Postby h-bot » Fri Mar 08, 2002 7:25 pm

From: twelve_second_vega_REMOVE_892071_THIS_@yahoo.com


(???Robert's misgivings are because he has a V8
in the tight fitting H-body engine bay,
right???)

Yes. The 120 tube core (30 rows, 4 deep) is over
2.5" thick and this greatly reduces the clearance
between the fan and radiator.

Of interesting note
is fluid capacity. I have a stock Monza V6 3 row
that measures 16" X 21" X 2" overall. It holds about
1.5 gallons of coolant in and of itself. My 4 row
measures 13" X 21" X 2.6" and holds a full 2.0 gallons. Go
figure.

The engine holds about 1.5 gallons per bank. This
equates to a total fluid capacity of about 20 quarts,
including the heater circuit.

The tanks on the
custom 4 row barely clear the frame rails by 1/4" and
require the use of a V8 Monza Front Crossmember for
clearance.

Compare that to a 1969 Corvette 350 with
A/C at 15 quarts, 1974 Buick with A/C and a 455 at
only 16.6 quarts & 1974 Cadillac 472 at 21.3 quarts. I
would say my fluid capacity is fairly generous.


The Flex-A-Lite fan is excellent and reliable.
However, it must have a minimum of 1" static clearance
(between blades & core) for
possible
deflection.

Just food for thought...Robert


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Postby h-bot » Fri Mar 08, 2002 7:54 pm

From: twelve_second_vega_REMOVE_345747_THIS_@yahoo.com


My 1969 Dodge Charger 500 (NASCAR Model) had two
rear facing scoops on each front fender. This helped
to exhaust pressurized air from under the
fenders.

It also had stainless steel covers on the drip
rail moldings (on each side of the windsheild) which
reportedly reduced high speed drag.

I would think
that the air dam and action of the fan would produce
high pressure in the engine compartment at highway
speeds. Any type of scooped hood would add to this
condition.

I have considered many things with respect to
this situation. I even thought about leaving the
plastic shock opening plugs out of the inner wheelwells
and let some high pressure vent there into the
wheelhouse. But, the small diameter opening probably wouldn't
flow much air.

The answer, in my mind, is a
flat vent in each rear corner of the hood. Something
along the lines of the Camaro Fender Vent or possibly
some louvers.

Our 2002 Crown Victorias have a
big louvered platsic panel fitted to the hood with
1/4 turn Dzus fastners. This drops the temperature
way way down on these cars.

Probably the best
idea is to install a 4" tube into the cowl vent cavity
in the wheel well and run it through and out to a
vent in the fender. But, you could be weakening the
structure in this area too. Who knows?

I may set up
a smoker and watch the path of smoke drawn into the
engine compartment while the engine is running. That
would tell us where the airflow is going.

There
might be some merit in all this. My 1972 Ford Torino
would overheat without a fan, even at 70 mph. However,
my 1967 Dodge Coronet didn't seem to notice at all
if you were on the freeway.

Another
modification...Robert


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Postby h-bot » Fri Mar 08, 2002 10:26 pm

From: CJBIAGI_REMOVE_107445_THIS_@yahoo.com


I noticed a new fan in the latest Summit catalog
that I haven't seen before. It is a 7 blade flex fan
made by Flex-a-lite. It comes in 17" and 18" versions.
It claims to be ideal for 4 and 5 row radiators. It
is a stainless steel type, not nylon. I figure since
the stock V-8 Monza fan utilized 7 blades, this one
might be a option. Clyde


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