Air intake system
Le Mans Master
Joined: Sep 2004
Posts: 7,027
Likes: 6
From: Shiloh Ohio
Originally Posted by Korreck
Thanks Gary and good morning. I had to remove the big mouth. It was fine at the track but in every day driving it was causing surging issues. Now I have to go slam you in the next post. 
Le Mans Master
Joined: Sep 2004
Posts: 7,027
Likes: 6
From: Shiloh Ohio
I am feeling post prolific today. Well I might as well expose myself early to the dreaded corvette forum ram air flame crew. I am convinced after owning two vararam equipped C5s, and after reading many posts on the subject that there are three reasons the vararam out performs other CAI designs. To me the question of whether or not it does in fact out perform the competition has been sufficiently proven. I will list these in the order of most importance in a drag strip situation, 1/4 or 1/8 mile run.
1. It needs no forward movement of the vehicle to receive ambient or cold air. The vehicle starts the race receiving ambient air.
2. Vararam filter is very high flow design.
3. The sealed design and location of the intakes on the front of the vehicle in the airstream creates high pressure on the outside of the air filter. I believe this creates a situation in which there is less parasitic HP loss in the engine. Is this ram air effect, well not really but it has become the popular term for this sort of set up.
1. It needs no forward movement of the vehicle to receive ambient or cold air. The vehicle starts the race receiving ambient air.
2. Vararam filter is very high flow design.
3. The sealed design and location of the intakes on the front of the vehicle in the airstream creates high pressure on the outside of the air filter. I believe this creates a situation in which there is less parasitic HP loss in the engine. Is this ram air effect, well not really but it has become the popular term for this sort of set up.
Le Mans Master
Joined: Sep 2004
Posts: 7,027
Likes: 6
From: Shiloh Ohio
Originally Posted by shurite44
Bob called me dumb. 
Safety Car
Joined: Jun 2003
Posts: 4,640
Likes: 0
From: Sunshine State
Originally Posted by 2000BSME
So I suppose your engines' compression ratio of 10:1, or whatever it is, only applies when you are flying your corvette at supersonic speeds?
disconnect your ignition system and turnover the engine with a pressure gage attached to a spark plug hole. You will find compression. You love to make comments to everyone on this board about how "that's the dumbest thing I've heard anyone in tarnation say on this blasted....blah blah blah"
Stop attacking people and stop making absolute statements like "air is this... air is that... this can't happen."
You sound like the typical "know it all".
disconnect your ignition system and turnover the engine with a pressure gage attached to a spark plug hole. You will find compression. You love to make comments to everyone on this board about how "that's the dumbest thing I've heard anyone in tarnation say on this blasted....blah blah blah"
Stop attacking people and stop making absolute statements like "air is this... air is that... this can't happen."
You sound like the typical "know it all".
Safety Car
Joined: Jun 2003
Posts: 4,640
Likes: 0
From: Sunshine State
Originally Posted by shurite44
I am feeling post prolific today. Well I might as well expose myself early to the dreaded corvette forum ram air flame crew. I am convinced after owning two vararam equipped C5s, and after reading many posts on the subject that there are three reasons the vararam out performs other CAI designs. To me the question of whether or not it does in fact out perform the competition has been sufficiently proven. I will list these in the order of most importance in a drag strip situation, 1/4 or 1/8 mile run.
1. It needs no forward movement of the vehicle to receive ambient or cold air. The vehicle starts the race receiving ambient air.
2. Vararam filter is very high flow design.
3. The sealed design and location of the intakes on the front of the vehicle in the airstream creates high pressure on the outside of the air filter. I believe this creates a situation in which there is less parasitic HP loss in the engine. Is this ram air effect, well not really but it has become the popular term for this sort of set up.
1. It needs no forward movement of the vehicle to receive ambient or cold air. The vehicle starts the race receiving ambient air.
2. Vararam filter is very high flow design.
3. The sealed design and location of the intakes on the front of the vehicle in the airstream creates high pressure on the outside of the air filter. I believe this creates a situation in which there is less parasitic HP loss in the engine. Is this ram air effect, well not really but it has become the popular term for this sort of set up.
No, I wasn't referring to the thermostat deal. I had forgotten all about that. Thanks for the reminder. I have given you Vararam guys tons of info that you choose to ignore. You want it, run it. Don't forget my challenge. Run instead with panty hose and you'll see the same gain.
Hood looked good.
The surging is caused by the cutout in the shroud. I have enclosed the Blackwing and it's OK now. It was drawing ambient air and also engine air whuich caused the PCM to constantly adjust fuel trim. Problem solved.
Reason I removed big mouth is that it was tested by Team ZR-1 and shows no gain at the PCM. I am going to test for consistancy and ET's without it.
Race Director
Joined: Mar 2005
Posts: 10,041
Likes: 17
Originally Posted by Korreck
Why don't you try reading before running your mouth? We are discussing air going into the engine, not after. Hello, anybody home?
Just like I was saying. Disrespectful, AND a know it all.
Pro
Joined: Jul 2002
Posts: 525
Likes: 0
Originally Posted by Korreck
Makes sense to me. Just can't firgure why the big name engine builders and tuners use a Blackwing. They must be awfully dumb. 
Do they cut the shroud.............
See sig for results with VARARAM.
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!
Joe Kucinski
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter
Joe Kucinski
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)
Joe Kucinski
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!
Verdad Gallardo
Top 10 Corvettes Coming to Mecum Indy 2026!
Brett Foote
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!
Michael S. Palmer
10 Revolutionary 'Corvette Firsts' Most People Don't Know
Joe Kucinski
5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2
Michael S. Palmer
Safety Car
Joined: Jun 2003
Posts: 4,640
Likes: 0
From: Sunshine State
Originally Posted by 2000BSME
Hello, anybody home?
Just like I was saying. Disrespectful, AND a know it all.
Just like I was saying. Disrespectful, AND a know it all.
You started this crap a long time ago. Anytime you want to bury the hatchet I'm all for that. All it shows is how childish we can be.
Race Director
Joined: Dec 2003
Posts: 12,599
Likes: 1
From: Texas
Originally Posted by shurite44
I am feeling post prolific today. Well I might as well expose myself early to the dreaded corvette forum ram air flame crew. I am convinced after owning two vararam equipped C5s, and after reading many posts on the subject that there are three reasons the vararam out performs other CAI designs. To me the question of whether or not it does in fact out perform the competition has been sufficiently proven. I will list these in the order of most importance in a drag strip situation, 1/4 or 1/8 mile run.
1. It needs no forward movement of the vehicle to receive ambient or cold air. The vehicle starts the race receiving ambient air.
2. Vararam filter is very high flow design.
3. The sealed design and location of the intakes on the front of the vehicle in the airstream creates high pressure on the outside of the air filter. I believe this creates a situation in which there is less parasitic HP loss in the engine. Is this ram air effect, well not really but it has become the popular term for this sort of set up.
1. It needs no forward movement of the vehicle to receive ambient or cold air. The vehicle starts the race receiving ambient air.
2. Vararam filter is very high flow design.
3. The sealed design and location of the intakes on the front of the vehicle in the airstream creates high pressure on the outside of the air filter. I believe this creates a situation in which there is less parasitic HP loss in the engine. Is this ram air effect, well not really but it has become the popular term for this sort of set up.
What about the fact.... well lemme remove that word and say the possibility.. What about the possibility that the vararam also takes a FRONTAL part of the car and makes it an intake opening, thereby reducing the frontal area and having less drag? Ever cup your hand and stick it out the window at 60 MPH? The difference in wind resistance between your hand horizontal and vertical is astounding. Those "cups" in the front of our cars are rather large.....
Again, I'm not saying that vararam equipped Vettes defy physics or even drop .001 cd, just saying that the POSSIBILITY of less resistance + "ram air" + "cold air" + high flowing albeit crappy filter could equal a more efficient air intake.
But I'd take being a better driver anyday..........
Safety Car
Joined: Jun 2003
Posts: 4,640
Likes: 0
From: Sunshine State
Originally Posted by vetterlatethannever
Sounds good to me! I know Korreck will rip me a new one for this but I was also thinking......
What about the fact.... well lemme remove that word and say the possibility.. What about the possibility that the vararam also takes a FRONTAL part of the car and makes it an intake opening, thereby reducing the frontal area and having less drag? Ever cup your hand and stick it out the window at 60 MPH? The difference in wind resistance between your hand horizontal and vertical is astounding. Those "cups" in the front of our cars are rather large.....
Again, I'm not saying that vararam equipped Vettes defy physics or even drop .001 cd, just saying that the POSSIBILITY of less resistance + "ram air" + "cold air" + high flowing albeit crappy filter could equal a more efficient air intake.
But I'd take being a better driver anyday..........
What about the fact.... well lemme remove that word and say the possibility.. What about the possibility that the vararam also takes a FRONTAL part of the car and makes it an intake opening, thereby reducing the frontal area and having less drag? Ever cup your hand and stick it out the window at 60 MPH? The difference in wind resistance between your hand horizontal and vertical is astounding. Those "cups" in the front of our cars are rather large.....
Again, I'm not saying that vararam equipped Vettes defy physics or even drop .001 cd, just saying that the POSSIBILITY of less resistance + "ram air" + "cold air" + high flowing albeit crappy filter could equal a more efficient air intake.
But I'd take being a better driver anyday..........
Even if you were able to reduce the frontal area, the front end is designed to better give a C/D, to help get better gas mileage and lessen front end lift so the air is not smashing into the front end but above and around it. Look at a hood you see dust on it that just sits on top which shows the airflow is being driven above it
I hope you don't feel ripped. I don't know how else to explain it.
Last edited by Korreck; Jun 16, 2005 at 02:27 PM.
Race Director
Joined: Mar 2005
Posts: 10,041
Likes: 17
Originally Posted by Korreck
Look at a hood you see dust on it that just sits on top which shows the airflow is being driven above it
I hope you don't feel ripped. I don't know how else to explain it.
I hope you don't feel ripped. I don't know how else to explain it.
No, I doubt anyone feels ripped off, but they may feel like you are talking to a point that is purely your own fantasy of the events, as you would wish them to occur-given the fact that you own an inferior air intake product/system and refuse to upgrade to the best one made to date for our cars.
Race Director
Joined: Dec 2003
Posts: 12,599
Likes: 1
From: Texas
Originally Posted by 2000BSME
Dust shows nothing other than the fact that we live in a dusty world.
There's even dust in the air coupler, past the filter too. Surely there's some air velocity in there.
Safety Car
Joined: Jun 2003
Posts: 4,640
Likes: 0
From: Sunshine State
Originally Posted by 2000BSME
Dust shows nothing other than the fact that we live in a dusty world. Dust is on every single square inch of my car, inside, outside, in the engine bay, and everywhere else. I rarely clean this dust off, so that I am constantly reminded, that we do indeed, live in a dusty world.
No, I doubt anyone feels ripped off, but they may feel like you are talking to a point that is purely your own fantasy of the events, as you would wish them to occur-given the fact that you own an inferior air intake product/system and refuse to upgrade to the best one made to date for our cars.
No, I doubt anyone feels ripped off, but they may feel like you are talking to a point that is purely your own fantasy of the events, as you would wish them to occur-given the fact that you own an inferior air intake product/system and refuse to upgrade to the best one made to date for our cars.
You have also ignored my offer to bury the hatchet. I offered.
Perhaps you can explain your statement a few weeks ago that adding a cutout for the Vararam reduces frontal area.
I also requested any of you running a Vararam to remove it from the MAF and make a timed run with panty hose covering same. I have stated you'll have the same ET gains. To date no one has done this.
You folks running the Vararam can offer no facts as to how it works. I have posted fact after fact on why it won't. Show me !!!!!!!!
Safety Car
Joined: Jun 2003
Posts: 4,640
Likes: 0
From: Sunshine State
Originally Posted by vetterlatethannever
There's even dust in the air coupler, past the filter too. Surely there's some air velocity in there.I would like to see some data.
Last edited by Korreck; Jun 16, 2005 at 07:02 PM.
Pro
Joined: Jul 2002
Posts: 525
Likes: 0
Originally Posted by Korreck
You folks running the Vararam can offer no facts as to how it works. I have posted fact after fact on why it won't. Show me !!!!!!!!
I have given you plenty of facts why it works..... as usual, you ignore what you can't disprove.
Pro
Joined: Jul 2002
Posts: 525
Likes: 0
Originally Posted by Korreck
But you're not reducing the frontal area. Think about this: It's great to think that the forward velocity of a car is being converted into a free supercharger. The actual air pressure gain is extremely small at automotive speeds. For example, at 150 mph, the pressure gain when air is efficiently brought to rest is 2.75 percent. Because this is a dynamic effect, it is proportional to the square of the air velocity. At a more realizable automotive speed of 75 mph, the effect (again with 100 percent efficient conversion of velocity into pressure) will be only one-quarter as great — that is, just under seven-tenths of one percent. In fact, velocity energy is not converted into pressure at 100 percent efficiency. A figure of 75 percent efficiency is usual, which reduces our notional ram-air gain at 75 mph to one-half of one percent.
Even if you were able to reduce the frontal area, the front end is designed to better give a C/D, to help get better gas mileage and lessen front end lift so the air is not smashing into the front end but above and around it. Look at a hood you see dust on it that just sits on top which shows the airflow is being driven above it
I hope you don't feel ripped. I don't know how else to explain it.
Even if you were able to reduce the frontal area, the front end is designed to better give a C/D, to help get better gas mileage and lessen front end lift so the air is not smashing into the front end but above and around it. Look at a hood you see dust on it that just sits on top which shows the airflow is being driven above it
I hope you don't feel ripped. I don't know how else to explain it.
So bob, why did you cut the shroud?????
Korreck= the joke of the board.
Safety Car
Joined: Jun 2003
Posts: 4,640
Likes: 0
From: Sunshine State
Be advised that for what ever reason Mr. New Vetter doesn’t like me. A few months ago I sent Mr. New Vetter a PM and asked if we couldn’t get along. Mr. New Vetter declined so I now ignore him and his comments. It appears to bother him greatly as he is always taking jabs at every opportunity. Poor baby.
Team Owner
Joined: Aug 2003
Posts: 38,314
Likes: 35
Originally Posted by Dave68
Jessem,
My setup is in my sig.
EB,
When you say "on the track", are you talking drag strip or track?
My setup is in my sig.
EB,
When you say "on the track", are you talking drag strip or track?
This is definitely not true if you have a Z06 or hole-drilled cover. Much more cold air enters the engine bay and is deflected upward, whereas the openings at the bottom of the engine bay don't help much in getting rid of the hot air that rises to the hood.
After installing my cold air mod, components in the engine bay are definitely cooler to the touch after a long run. Try touching stuff in a VR-equipped C5 after a long run - but have a burn kit handy!
After installing my cold air mod, components in the engine bay are definitely cooler to the touch after a long run. Try touching stuff in a VR-equipped C5 after a long run - but have a burn kit handy!