Cold Air Intake - Is it worth the effort ?

K

Khalid_1

New member
Greetings all,

I saw couple of postings about a Cone shaped cold air intake where the new air filter sits in the place of the overflow tank and the later is relocated to where the original air filter box is. Now it looks like the engine or in this case the turbo will get more air because of the size of the air filter and the open space but I wonder in reality if this is the case.

Note that the existing air filter gets air coming from the grill through special duct, while the cold air intake is sitting on one side of the engine with hardly any air flow coming to it.....or is it so ?

I would appreciate view points of all who took the plunge and installed the above mentioned cold air intake (in place of the Overflow tank) and let me know if there is more heat that is going to engine leading to hotter air which may lead to overboost or just more heat build up.

I would appreciate your feedback as I am considering the cold air intake solution....but reluctant to do that for my thoughts above.

Thanks in advance,
Khalid
91 - Sy
 
atkonkler

atkonkler

Is this your bush?
Re: Cold Air Intake - Is it worth the effort ?

gaRpm makes a custom cold air kit that wraps back around to where the coolant reservoir is but you'd have to fashion a custom plate to encase it to avoid sucking hot air in from the turbo. I have one on my truck it's ok you can reAlly hear the turbo when you get on it. I'm gonna makeshift a plate and put it in or even possibly add a little flap or grill into the fender to promote air being pulled from the outside I think I'm gonna design something, when I get some time. I'll keep you posted.

Oh and by the way in FIFA 1994 video game Quatar was the worst team in futbol. I smoked them 29-2
 
It's just a six

It's just a six

Super Member
Re: Cold Air Intake - Is it worth the effort ?

I made a somewhat copy of a ATR airbox, but larger.

I used a 6" velosity stack & a K&N 6" inlet filter.

It gets cold air from the inner fender where I also made a ram/cold air scoop.

IMG_5560.jpg


IMG_5562.jpg


IMG_5564.jpg


IMG_5598.jpg


IMG_5599.jpg


IMG_4968.jpg
 
Flyin Ryan

Flyin Ryan

hated cuz he drives fords
Re: Cold Air Intake - Is it worth the effort ?

Just run the stock air box and cross over if the crossovers in good shape ie no cracking etc because on a stock truck it's prob n ot worth the hassle of changing up everything for minimal t best gains if any at all.

Keep stock setup just remove the restrictor thats in between the air box/mount to core support and stick a quality panel filter in.



That ramair scoop looks the same as the very common March Performance kit that can be had used in the mustang world for peanuts. I had one back in the 90's lol but it worked good

http://redesign3.mu.snapshotdesign.com/itemdy00.asp?T1=M1410+01
 
roswald21

roswald21

New member
Re: Cold Air Intake - Is it worth the effort ?

I like the idea of using that scoop hopefully egay has em.
 
alwayscode390

alwayscode390

pppssssshhhhhtttttttttttt
Re: Cold Air Intake - Is it worth the effort ?

Flyin Ryan said:
Keep stock setup just remove the restrictor thats in between the air box/mount to core support
Click to expand...

I also agree with the stock air box setup for a mildly modded truck.

Keeps the filter far away from the heat of the turbo.

Thanks for a heads up on the restrictor , I didnt realize that was even there :) ---
 
It's just a six

It's just a six

Super Member
Re: Cold Air Intake - Is it worth the effort ?

I made the scoop out of fiberglass & it feeds cool air directly to the fender, no need for ducting.
If you look @ the fender, it was made to feed air up through the fender.
 
K

Khalid_1

New member
Re: Cold Air Intake - Is it worth the effort ?

Flyin Ryan said:
Just run the stock air box and cross over if the crossovers in good shape ie no cracking etc because on a stock truck it's prob n ot worth the hassle of changing up everything for minimal t best gains if any at all.

Keep stock setup just remove the restrictor thats in between the air box/mount to core support and stick a quality panel filter in.



That ramair scoop looks the same as the very common March Performance kit that can be had used in the mustang world for peanuts. I had one back in the 90's lol but it worked good

http://redesign3.mu.snapshotdesign.com/itemdy00.asp?T1=M1410+01
Click to expand...


Restrictor? did not know there is one. Do you have a sketch or photo showing it ? What kind of panel filter would you propose? what size? would too much filters restrict the air flow ???
Update to the above: I know what you meant now. Thanks man. You meant the snorkle piece. See my comments to Johnboy. The physics about that piece would make you wonder.

By the way, the stock setup is cracking towards the clips where it attaches to the turbo inlet. I have patched it with glue and duct tape and when it peels, I replace the duct tape pieces, but looking for a more permenant solution still...if anyone have any idea how to fix the breaking edge of the plastic piece.

Thanks for your input
Khalid
91-Sy
 
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K

Khalid_1

New member
Re: Cold Air Intake - Is it worth the effort ?

DaveP said:
A: Is there such a thing as "cold air" in Qatar?
B: I would be much more concerned with proper, effective air filtration than marginal / non-existent 'performance' gains from modifying the filter system. The stock system is very effective at filtration.

This is your engine. Looks like it lives in a very dusty environment. Proper filtration is imperative.
IMG_7515.jpg
Click to expand...

Hi Dave,
A- Yes there is "cold air" in Qatar from end of October till March...especially at night time. You must had visited Qatar before to know that it is a hot country but not as hot as Kuwait or some parts of Saudia Arabia during summer times.

B- The car was stored under sun shed for about 9 months or more...and I did not wash the engine bay as of yet, and I agree with you proper filteration is the most important.

I agree with your thoughts about Cold Air Intake and the Engine Bay conical filter placed close to the turbo... which you mentioned in another thread which I read today....my thoughts preciously !

Regards,
Khalid
91-Sy
 
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K

Khalid_1

New member
Re: Cold Air Intake - Is it worth the effort ?

It's just a six said:
I made a somewhat copy of a ATR airbox, but larger.

I used a 6" velosity stack & a K&N 6" inlet filter.

It gets cold air from the inner fender where I also made a ram/cold air scoop.
IMG_5599.jpg


IMG_4968.jpg
Click to expand...

Your setup is sweet in my view. Even without the cold air box, just having that ram air going to the fender should cool the engine bay (indirectly) to a small extent. I might take that on as a project just to introduce ram air scoop to the fender area if I can get more details.

Khalid
91-Sy
 
johnboy89

johnboy89

Member
Last edited:
alwayscode390

alwayscode390

pppssssshhhhhtttttttttttt
Re: Cold Air Intake - Is it worth the effort ?

johnboy89 said:
Same here keep the stock set-up, but remove the snorkel/restrictor. Accordig to tests done it's worth 48 CFM of air???

http://www.syty.net/forums/showthread.php?t=86631&highlight=intake+flow+tests
Click to expand...

Thanks for the link to that.

My question ... is it worth the extra airflow of putting a cone filter on the end of the crossover tube vs. the cooler air coming from the stock box?

My stock box has a crack ... but the crossover tube is fine ---
 
It's just a six

It's just a six

Super Member
Re: Cold Air Intake - Is it worth the effort ?

alwayscode390 said:
Thanks for the link to that.

My question ... is it worth the extra airflow of putting a cone filter on the end of the crossover tube vs. the cooler air coming from the stock box?

My stock box has a crack ... but the crossover tube is fine ---
Click to expand...

According to Kenne Bell, the stock crosover tube is a restriction.
 
It's just a six

It's just a six

Super Member
Re: Cold Air Intake - Is it worth the effort ?

Khalid_1 said:
Your setup is sweet in my view. Even without the cold air box, just having that ram air going to the fender should cool the engine bay (indirectly) to a small extent. I might take that on as a project just to introduce ram air scoop to the fender area if I can get more details.

Khalid
91-Sy
Click to expand...

Thanks,
it's just something I made very quickly & it's not the best looking piece, but it works.

You also need to make block-off plates where there are holes in the fender in the engine compartment area. This is done so most of the ram air goes directly to the airbox.
 
K

Khalid_1

New member
Re: Cold Air Intake - Is it worth the effort ?

johnboy89 said:
Same here keep the stock set-up, but remove the snorkel/restrictor. According to tests done it's worth 48 CFM of air???

http://www.syty.net/forums/showthread.php?t=86631&highlight=intake+flow+tests
Click to expand...

Johnboy,
Thanks for the photo of the restrictor. I saw it but I thought its function is to direct the amount of air to the opening of the air filter box and in particular to the opening in the box that is exposed to incoming air.

Accordingly to air flow theory, the amount of air the will go throught that snorkle would be the same in the end of the day because when you pench your garden hose ...the water amount will come out of it faster ...but in the end the water volume would be the same if you did not pench that hose...i.e. more quantity with less volecity..... does that make sence ???


Regards,
Khalid
91-Sy
 
alwayscode390

alwayscode390

pppssssshhhhhtttttttttttt
Re: Cold Air Intake - Is it worth the effort ?

So, youre saying the amount of air will be the same if you keep the restrictor in place ... BUT it will actually be coming in faster since the restrictor sorta directs the airflow?

Are you suggesting that people should keep the restrictor in place? ---
 
K

Khalid_1

New member
Re: Cold Air Intake - Is it worth the effort ?

alwayscode390 said:
So, youre saying the amount of air will be the same if you keep the restrictor in place ... BUT it will actually be coming in faster since the restrictor sorta directs the airflow?

Are you suggesting that people should keep the restrictor in place? ---
Click to expand...

Spot On !
This is physics in simple form.
Using the water hose analogy....you can test that by filling a container and measuring the time. Record the time of how long it took to fill the container. Now, empty the container, and filling it again, but this time, pench the hose a bit to make the flow faster. This will reduce the water volume and will give you more water pressure but record the time now and you will see that it is the same timing.

I think the idea of the snorkle (i.e. restrictor) is to direct air to the small opening of the air filter but as you deduce correctly.... FASTER !

In spite of what was experimented and the article provided by one of the guys earlier, it is good results but I cannot role on of the variables was not considered accurately, or the values would have some changes if the truck is moving (ie forced air flowing to the snorkle) versus if the truck is stationary (No forced air flowing)

Hope it is helpfull. The more we understand our trucks and how it was built, the better that we can handle or modify it.

Regards,
91-Sy
 
DaveP

DaveP

Active member
Re: Cold Air Intake - Is it worth the effort ?

Why does the pressure drop in front of the turbo inlet matter? Perhaps for spool-up, but not for ultimate power. 15 psi is 15psi regardless of what the restrictions are before the turbo. The air temp is more important than any pressure drop reduction.

What am I missing?

Somebody do 5 passes, logged, on a strip with a stock set up on a stock truck. Then do 5 more with a RPM set up. Throw out the high and low passes from each set, average the remaining 3, and I bet there's no discernible difference.

The biggest difference with induction system changes is with the NOISE they make. It sounds faster, so it must be faster. But it isn't.
 
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