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does vararam create pressure?

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Old Jun 15, 2009 | 08:13 PM
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Default does vararam create pressure?

does vararam actually increase pressure in the intake manifold above atmospheric pressure?? if so, i would like to know how much. thanks!
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Old Jun 15, 2009 | 08:54 PM
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Originally Posted by SaberD
does vararam actually increase pressure in the intake manifold above atmospheric pressure?? if so, i would like to know how much. thanks!
Whip out your scantool and let us know. Anything over 100KPa at wide open throttle is a good indicator you may be getting extra pressure.
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Old Jun 16, 2009 | 01:09 AM
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When you are going slow, NO. BUT the faster you go the more air you force into the filter and so on.
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Old Jun 16, 2009 | 01:36 AM
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You would think so.......but Mike Mercury once pointed out that I needed to do a Google search on Ram Air. So I suggest you do the same. I can't remember the number but it isn't much. Basically Ram Air is a myth.
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Old Jun 16, 2009 | 02:34 AM
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It mostly benefits from pulling cooler air into the engine. Very slight "ram" air effect above 100mph. However I have buried the speedo so I would imagine it helps.
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Old Jun 16, 2009 | 10:56 AM
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Originally Posted by SaberD
does vararam actually increase pressure in the intake manifold above atmospheric pressure?? if so, i would like to know how much. thanks!
NO!
See www.vetteguru.com/ramair/
It's really a cool air device that does give a small percent of performance improvement.
If you want FI then you need to get a blower/turbo setup.
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Old Jun 16, 2009 | 11:57 AM
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Originally Posted by corvettebob1
NO!
See www.vetteguru.com/ramair/
It's really a cool air device that does give a small percent of performance improvement.
If you want FI then you need to get a blower/turbo setup.
link not working. goes to a sales page.
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Old Jun 16, 2009 | 12:16 PM
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It sure does increase hp (or at least trap times)
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Old Jun 16, 2009 | 09:03 PM
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IF you could keep it air tight in there you perhaps could create some pressure. Based on you atmospheric pressure 100 kpa may or may not be an indicator of pressure.


Dave
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Old Jun 16, 2009 | 09:30 PM
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Scientific debate isn't even necessary.

Vararam makes a product that does get some cold air from outside of the car to the intake.

That being said, that's about the only good thing the $285 dollar plastic garbage does.

I have a very well documented thread about what they sent me and it's pathetic. Each duct is made from using a 2 piece design (per duct) with the upper and lower portions that are "super glued" together. If you held the unit on its side, you will be able to see cracks and areas where there is no glue. There areas are where any pressure that could possibly be allowed to build, would simply come pouring out of the seams--never making it to the tb.

I did my best to glue mine together better than they did, but my efforts were useless. The head (where the filter) connects to the ducts isn't EVER going to provide an air tight seal. Currently I am able to stick my finger between those two parts while the unit is 'locked up tight' with their cheapo pull strap design. Their lame excuse for foam is coming out too. It's a real shame because their design is so creative and well thought out...

...just horribly executed.









Last edited by DevilMan02; Jun 16, 2009 at 09:40 PM.
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Old Jun 16, 2009 | 09:45 PM
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If you aren't **** retentive and just care about performance, this intake is awesome! W/ just this, drag radials and 4.10 gears I lost.9 seconds in et!!

Dave
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Old Jun 16, 2009 | 09:48 PM
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Yeah guess I'm **** retentive for thinking 300 bucks would buy me more than some plastic slapped together with glue in some sweatshop in malaysia...


If performance is your only concern, do this:



no intake filtering what so ever!

Last edited by DevilMan02; Jun 16, 2009 at 09:51 PM.
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Old Jun 16, 2009 | 09:54 PM
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If that'll set me back 300 you have a deal! Also, there is no ram air effect there.

Dave
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Old Jun 16, 2009 | 09:57 PM
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Default Logic?

If I drive down the road at 70 mph and stick my arm out the window,
there is some amount of force ( air pressure ) on my hand. This same force or air pressure is present at the Vararam air intake at the front of the car. It is reasonable to think there is some amount of force or air pressure continueing through the air filter and to the throttlebody.

Roger T
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Old Jun 16, 2009 | 09:59 PM
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Originally Posted by DevilMan02
Scientific debate isn't even necessary.

Vararam makes a product that does get some cold air from outside of the car to the intake.

That being said, that's about the only good thing the $285 dollar plastic garbage does.

I have a very well documented thread about what they sent me and it's pathetic. Each duct is made from using a 2 piece design (per duct) with the upper and lower portions that are "super glued" together. If you held the unit on its side, you will be able to see cracks and areas where there is no glue. There areas are where any pressure that could possibly be allowed to build, would simply come pouring out of the seams--never making it to the tb.

I did my best to glue mine together better than they did, but my efforts were useless. The head (where the filter) connects to the ducts isn't EVER going to provide an air tight seal. Currently I am able to stick my finger between those two parts while the unit is 'locked up tight' with their cheapo pull strap design. Their lame excuse for foam is coming out too. It's a real shame because their design is so creative and well thought out...

...just horribly executed.

Thats amazing bro. I got one of the early ones back in 2004 and my piece was a lot like you described except for the box fitment. The latches were so tight I could barely stretch them enough to connect, but when I did it sealed. There were some leaks like you mentioned but I used Silicone to seal that up. The seal the included worked nice, but I had to cut it in a couple spots to make it adhere better. Once everything was installed my neighbor lit a cigarette and put it about 6 inches from each of the ducts and when I tapped the throttle the smoke was sucked up into the ducts showing it was pulling air from outside. I then sprayed water with a squirt bottle on all the seams to see if I got any bubbles or bubbling and I was very happy to find none.

Now with that being said, the vararam is a semi functional piece of crap out of the box with all the potential to be a great mod. It all depends on whether you want to put the extra work in to make it better. My finishing touch yielded a very nicely sealed functional CAI.

Another point, why can't VaraRam make it that good before its shipped. As much as it costs you'd think it would be a lot better. At any rate I am happy with my final product. Only took an extra hour or so to fix all the problems. (At least on my VaraRam)
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Old Jun 16, 2009 | 10:03 PM
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Originally Posted by DevilMan02
Yeah guess I'm **** retentive for thinking 300 bucks would buy me more than some plastic slapped together with glue in some sweatshop in malaysia...


If performance is your only concern, do this:



no intake filtering what so ever!


Whats the deal on this motor ?? I've never seen anything quite like it?? Can you give some details in a PM to me?
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Old Jun 16, 2009 | 10:06 PM
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Visit the following thread: http://forums.corvetteforum.com/c5-t...post1570050315
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To does vararam create pressure?

Old Jun 16, 2009 | 10:10 PM
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Originally Posted by DevilMan02
Yeah guess I'm **** retentive for thinking 300 bucks would buy me more than some plastic slapped together with glue in some sweatshop in malaysia...


If performance is your only concern, do this:



no intake filtering what so ever!
Oh man Engine ****
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Old Jun 16, 2009 | 10:37 PM
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Originally Posted by Roger T
If I drive down the road at 70 mph and stick my arm out the window,
there is some amount of force ( air pressure ) on my hand. This same force or air pressure is present at the Vararam air intake at the front of the car. It is reasonable to think there is some amount of force or air pressure continueing through the air filter and to the throttlebody.

Roger T
Not necessarily positive pressure, but perhaps less negative as the engine is drawing in large volumes of air just running. From what I've read over time, they seem to work. Me, I 'm running a Blackwing and cut large holes in my foglight shrouds. I ordered a Vararam, opened it, inspected it and put it up for sale on the Forum. I lost a few bucks but didn't want to install something of that quality on my car.
Ed
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Old Jun 16, 2009 | 10:53 PM
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Originally Posted by C5XTASY
Not necessarily positive pressure, but perhaps less negative as the engine is drawing in large volumes of air just running. From what I've read over time, they seem to work. Me, I 'm running a Blackwing and cut large holes in my foglight shrouds. I ordered a Vararam, opened it, inspected it and put it up for sale on the Forum. I lost a few bucks but didn't want to install something of that quality on my car.
Ed

I can't believe how you didn't even try to silicone the gaps and and/or sand the rough edges. A little bit of finishing work and my VaraRam rocked !!!
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