design flaw : F20A 's air intake gets useless heat from radiator*coolant

I don't have the magazine anymore. I DO wish I'd kept it.

for CAIs(not short rams),20 HP for a RSX.
IIRC,that was measured at the wheel by Honda Tuning's dyno.

 

Radiated heat (from the engine) gets absorbed by other things under the
hood,including the underhood air.Thus,it's retained.

these are all SHORT RAMs,-not- COLD air intakes(CAI) ;BIG difference.
CAIs are longer,and run down through the wheel well to draw cooler air from
outside the engine compartment.(thru the original intake's passage.)
that is why HT's tests showed only 5-7 HP for short rams and 20 HP for the
CAIs,and torque increases for the CAIs but not the short rams.
Air temp was the big difference.

No need to;there's an opening available stock;the Honda/Acura intake is
quite complex,and convoluted.the resonator tank and associated plumbing is
unseen,hidden in the wheelwell in front of the wheel,you have to remove the
wheelwell liner just to see it.(personal experience!)

I have seen where some folks made their own ducting and air box to supply
the short ram with cold air.

I don't have the magazine anymore.
I haven't found it on HT's site anymore,either.

 

Radiated heat (from the engine) gets absorbed by other things under the
hood,including the underhood air.Thus,it's retained.

these are all SHORT RAMs,-not- COLD air intakes(CAI) ;BIG difference.
CAIs are longer,and run down through the wheel well to draw cooler air from
outside the engine compartment.(thru the original intake's passage.)
that is why HT's tests showed only 5-7 HP for short rams and 20 HP for the
CAIs,and torque increases for the CAIs but not the short rams.
Air temp was the big difference.

No need to;there's an opening available stock;the Honda/Acura intake is
quite complex,and convoluted.the resonator tank and associated plumbing is
unseen,hidden in the wheelwell in front of the wheel,you have to remove the
wheelwell liner just to see it.(personal experience!)

I have seen where some folks made their own ducting and air box to supply
the short ram with cold air.

I don't have the magazine anymore.
I haven't found it on HT's site anymore,either.

 

The following treats the rams but says the CAI modifications
weren't yet available. Maybe you can improve on the search
and turn up your article.

http://www.hondatuningmagazine.com/tech/0201ht_acura_rsx_type_s_aem_intake/

Of course as I'm sure you know, Jim Yanik, colder air means
more dense air, which means for the same volume of air flow
into an engine cylinder, more fuel may be admitted. So of
course engine power can increase and substantially. (OTOH,
as has been discussed here in the past, this does not
necessarily translate to more overall fuel efficiency for
the car. For one thing, if the air is cooler because of
lower ambient temperature, then the car sees more wind
resistance.) Certain industrial size diesel engines, for
one, have an air cooler built into them to increase power.

Whether these seemingly popular (according to the makers who
have plastered the net with their claims?) aftermarket CAI
devices do anything meaningful is still not clear without
more information. I see the ads claiming up to 15% more
power.

I'm sure this subject is beaten to death on Usenet...

I do not see how leaving the screws loose on the air intake
cover affects air intake temperature in any meaningful way,
though. Maybe Beam has backed off this assertion.

 

The following treats the rams but says the CAI modifications
weren't yet available. Maybe you can improve on the search
and turn up your article.

http://www.hondatuningmagazine.com/tech/0201ht_acura_rsx_type_s_aem_intake/

Of course as I'm sure you know, Jim Yanik, colder air means
more dense air, which means for the same volume of air flow
into an engine cylinder, more fuel may be admitted. So of
course engine power can increase and substantially. (OTOH,
as has been discussed here in the past, this does not
necessarily translate to more overall fuel efficiency for
the car. For one thing, if the air is cooler because of
lower ambient temperature, then the car sees more wind
resistance.) Certain industrial size diesel engines, for
one, have an air cooler built into them to increase power.

Whether these seemingly popular (according to the makers who
have plastered the net with their claims?) aftermarket CAI
devices do anything meaningful is still not clear without
more information. I see the ads claiming up to 15% more
power.

I'm sure this subject is beaten to death on Usenet...

I do not see how leaving the screws loose on the air intake
cover affects air intake temperature in any meaningful way,
though. Maybe Beam has backed off this assertion.

 

That one was hard to top, at least without a tinfoil hat.

Mike

 

That one was hard to top, at least without a tinfoil hat.

Mike

 

dude, the engine's at 78C. that's warm to the touch, but it's nothing
from a radiant heat standpoint. what you're feeling is convective heat,
primarily wafting around from the [very hot] exhaust and the radiator.

they're all /sold/ as cai's:

http://www.car-stuff.com/performance/quote.php?make=1&year=2000&model=1&brand=1623&part_name=15&category=

like every single item on that page.

respectfully, i disagree. the effect being observed is dynamic
supercharging. otherwise the length of the tube would make no
difference, it would be purely air temp. seriously jim, the effect of
airflow dynamics are huge. you're right, a lower air temp helps,
sometimes by a noticeable amount, but it's chicken feed compared to a
mismatch between a given intake tube's resonance and rpm's. that's why
you'll find variable-geometry intake manifold systems on a fair number
of modern un-turboed cars, but air cooling only on turbos where air
temps can increase significantly. and even then, intercoolers are more
to help reduce detonation effects of inducing hot air than they are to
increase air density.

http://en.wikipedia.org/wiki/Variable_Length_Intake_Manifold

i know about the resonator. my first civic had had it's resonator
removed for some reason i never figured out. performance sucked until i
replaced it.

sure. and integras take air in from under the front bumper. but that's
still better than the products sold as "cai" because they have nothing
to do with cold air!

well, i looked online and finding any article that mentions actual air
temp readings, let alone one from a moving vehicle, takes /way/ more
patience than i've got.

 

dude, the engine's at 78C. that's warm to the touch, but it's nothing
from a radiant heat standpoint. what you're feeling is convective heat,
primarily wafting around from the [very hot] exhaust and the radiator.

they're all /sold/ as cai's:

http://www.car-stuff.com/performance/quote.php?make=1&year=2000&model=1&brand=1623&part_name=15&category=

like every single item on that page.

respectfully, i disagree. the effect being observed is dynamic
supercharging. otherwise the length of the tube would make no
difference, it would be purely air temp. seriously jim, the effect of
airflow dynamics are huge. you're right, a lower air temp helps,
sometimes by a noticeable amount, but it's chicken feed compared to a
mismatch between a given intake tube's resonance and rpm's. that's why
you'll find variable-geometry intake manifold systems on a fair number
of modern un-turboed cars, but air cooling only on turbos where air
temps can increase significantly. and even then, intercoolers are more
to help reduce detonation effects of inducing hot air than they are to
increase air density.

http://en.wikipedia.org/wiki/Variable_Length_Intake_Manifold

i know about the resonator. my first civic had had it's resonator
removed for some reason i never figured out. performance sucked until i
replaced it.

sure. and integras take air in from under the front bumper. but that's
still better than the products sold as "cai" because they have nothing
to do with cold air!

well, i looked online and finding any article that mentions actual air
temp readings, let alone one from a moving vehicle, takes /way/ more
patience than i've got.

 

LOf*ingL! I'm going to save this one!

Anyone give me odds he also drains the windshield washer to reduce
weight? Doesn't mount the front plate (if his state issues 2)?

 

LOf*ingL! I'm going to save this one!

Anyone give me odds he also drains the windshield washer to reduce
weight? Doesn't mount the front plate (if his state issues 2)?

 

Does anyone know Chea's country of origin ("petrol", "felt", etc.)?

And does he have a pet?

 

Does anyone know Chea's country of origin ("petrol", "felt", etc.)?

And does he have a pet?

 

I am Tee Hee Chia Pet and I now give you five more defects I find with
my Honda.

1. Exhaust system is made of metal instead of carbon fibre. Not only
is it heavier and more prone to rust but we need more carbon fibre in
our diet.

2. Spring loaded lid on coin box is always pushing backward against
car which slow it down and cause the battery to go dead. I turned
mine around and now it pushes the car forward and it is a lot faster.
Maserati coin box covers are all designed this way.

3. My battery dies all the time because I leave the lights on and the
car just chimes instead saying "Hey you fucking moron, you left the
lights on again." This technology was standard in the 1980 LeBaron.

4. I busted the headlights with a hammer and now the battery doesn't
run down but the annoying chime still sounds. Honda should make cars
with no headlights just like Mercedes started doing a hundred years
ago.

5. The cabin has a poor layout. Too much Ying, not enough Yang. I
paid a Feng Shui master to adjust the Chi and now the gas milage is
much better. Also car is more at peace with the road.

 

I am Tee Hee Chia Pet and I now give you five more defects I find with
my Honda.

1. Exhaust system is made of metal instead of carbon fibre. Not only
is it heavier and more prone to rust but we need more carbon fibre in
our diet.

2. Spring loaded lid on coin box is always pushing backward against
car which slow it down and cause the battery to go dead. I turned
mine around and now it pushes the car forward and it is a lot faster.
Maserati coin box covers are all designed this way.

3. My battery dies all the time because I leave the lights on and the
car just chimes instead saying "Hey you fucking moron, you left the
lights on again." This technology was standard in the 1980 LeBaron.

4. I busted the headlights with a hammer and now the battery doesn't
run down but the annoying chime still sounds. Honda should make cars
with no headlights just like Mercedes started doing a hundred years
ago.

5. The cabin has a poor layout. Too much Ying, not enough Yang. I
paid a Feng Shui master to adjust the Chi and now the gas milage is
much better. Also car is more at peace with the road.

 

Pretty good, T.

 

Pretty good, T.

 

Cha-cha-cha-CHIA!!

LOL!

#2 is a real sleeper. I bet only a select few race teams have
discovered the secret. THANKS!!

#3 Hell, I almost wish the *$%^ car would curse me, rather than jangle
my nerves with the constant, maddening, DING-DING-DING!!! The facility
therapist says I should avoid stressful noises, and stop playing with
knives....

#5 Try adding several cats. The Yowl will neutralize any Ying/Yang
imbalance. Also, people will think you have some exotic, high
performance parts installed.

-Greg (Looking around for occasional Honda test dummy Howard Lester.
He's always good for a one liner or two or three.)

 

Cha-cha-cha-CHIA!!

LOL!

#2 is a real sleeper. I bet only a select few race teams have
discovered the secret. THANKS!!

#3 Hell, I almost wish the *$%^ car would curse me, rather than jangle
my nerves with the constant, maddening, DING-DING-DING!!! The facility
therapist says I should avoid stressful noises, and stop playing with
knives....

#5 Try adding several cats. The Yowl will neutralize any Ying/Yang
imbalance. Also, people will think you have some exotic, high
performance parts installed.

-Greg (Looking around for occasional Honda test dummy Howard Lester.
He's always good for a one liner or two or three.)