Check out this CAI
Mach 1 Member
Joined: April 8, 2005
Posts: 681
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Originally posted by GOFISCH@August 19, 2005, 2:24 PM
Does Brenspeed or Bamachips do anything for the Auto shift points?
Does Brenspeed or Bamachips do anything for the Auto shift points?
Mach 1 Member
Joined: April 8, 2005
Posts: 681
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Originally posted by outdoorstom@August 19, 2005, 5:14 PM
Ordered
They hope to ship by the end of next week.
Ordered
They hope to ship by the end of next week.
Shelby GT350 Member
Joined: December 1, 2004
Posts: 2,098
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From: Waddington, NY (waaaay up north)
Originally posted by The Lyin' King@August 19, 2005, 10:19 PM
No offense, but I hope Brenspeed and Bama get theirs first :rock:
No offense, but I hope Brenspeed and Bama get theirs first :rock:
Me too!
Mach 1 Member
Joined: April 8, 2005
Posts: 681
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See http://forums.bradbarnett.net/index.php?showtopic=32252 to get in on a group buy for an Xcalibrator 2.
OFFER GOOD THROUGH August 31, 2005
OFFER GOOD THROUGH August 31, 2005
Cobra Member
Joined: November 27, 2004
Posts: 1,303
Likes: 2
From: Albuquerque, New Mexico
Someone check my numbers please:
Ok. I was thinking about the ram air effect folks were talking about. So, I ran these numbers through the ol' calculator (well, Excel, actually!!!):
Air slot to intake: 82 in^2 area
Assumed vehicle speed: 100 mph
Assumed engine speed: 6000 rpm (and no, I do NOT care if it actually CAN run at 6000 rpm at 100mph in any gears with manual or auto. Doesn't matter one bit for this exercise!)
Assumed engine Volumetric Efficency (VE): 1.0 (higher than it will be, I know)
1st job is to see how much air can flow through a perfect 82 in^2 slot at 100mph (see, I'm giving the intake the benifit of the doubt here to compensate for the VE benifit!). My math goes like this:
in^2 (slot) * 100 mile/hour * 5280 ft/mile * 12 in/ft * 1/60 hour/minute * 1/60 minute/second = in^3 / second. Right? So:
82*100*5280*12*1/60*1/60 = 144320 in^3 / second POTENTIAL flow through the intake slot. Not bad.
2nd step: Find out how much air our engine can "suck" (no such thing brother! The air is PUSHED into the engine by the air on the outside). Again, my math:
in^3/rev (engine displacement) * VE * rev/minute(engine speed) * 1/2(it's a 4 stroke, NOT a 2 stroke!) * 1/60 minute/second = in^3/second. Right? So:
280.6 * 1 * 6000 * 1/2 * 1/60 = 14030 in^3 / second that the engine can "consume" at 6000 rpm given a VE of 1.0
Or, it looks like this intake and supply more than 10 TIMES the amount of air to the engine than it can consume with the above assumptions. That should indicate that we will have very low vacuums (meaning very little pressure drop relative to ambinat pressure) AT THE AIR FILTER at any vehicle speed above about 15 mph or so. Granted, the real intake will have flow restrictions that my model doesn't take into account, but it should still be able to do a VERY good job of getting fresh air to the air filter.
Ok. I was thinking about the ram air effect folks were talking about. So, I ran these numbers through the ol' calculator (well, Excel, actually!!!):
Air slot to intake: 82 in^2 area
Assumed vehicle speed: 100 mph
Assumed engine speed: 6000 rpm (and no, I do NOT care if it actually CAN run at 6000 rpm at 100mph in any gears with manual or auto. Doesn't matter one bit for this exercise!)
Assumed engine Volumetric Efficency (VE): 1.0 (higher than it will be, I know)
1st job is to see how much air can flow through a perfect 82 in^2 slot at 100mph (see, I'm giving the intake the benifit of the doubt here to compensate for the VE benifit!). My math goes like this:
in^2 (slot) * 100 mile/hour * 5280 ft/mile * 12 in/ft * 1/60 hour/minute * 1/60 minute/second = in^3 / second. Right? So:
82*100*5280*12*1/60*1/60 = 144320 in^3 / second POTENTIAL flow through the intake slot. Not bad.
2nd step: Find out how much air our engine can "suck" (no such thing brother! The air is PUSHED into the engine by the air on the outside). Again, my math:
in^3/rev (engine displacement) * VE * rev/minute(engine speed) * 1/2(it's a 4 stroke, NOT a 2 stroke!) * 1/60 minute/second = in^3/second. Right? So:
280.6 * 1 * 6000 * 1/2 * 1/60 = 14030 in^3 / second that the engine can "consume" at 6000 rpm given a VE of 1.0
Or, it looks like this intake and supply more than 10 TIMES the amount of air to the engine than it can consume with the above assumptions. That should indicate that we will have very low vacuums (meaning very little pressure drop relative to ambinat pressure) AT THE AIR FILTER at any vehicle speed above about 15 mph or so. Granted, the real intake will have flow restrictions that my model doesn't take into account, but it should still be able to do a VERY good job of getting fresh air to the air filter.
Team Mustang Source
Joined: October 11, 2004
Posts: 711
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From: Surrey, BC
So, looking at the results of your math a little differently, for ram air to work and to prevent the intake from "sucking" air faster than it's hitting the front of the vehicle, at 100 mph/6K rpm you only need 8.2 in^2 of intake area, 50 mph/6K rpm would be 41 in^2, and at 10 mph/6K rpm you need the full 82 in^2, correct?
Mach 1 Member
Joined: April 8, 2005
Posts: 681
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Now I know why I avoid calculators . . .
Great job with the formulas there . . . RRRoamer!!! . . . . got any asprin???
Mach 1 Member
Joined: July 8, 2005
Posts: 525
Likes: 0
From: Northern BC, Canada
Originally posted by RRRoamer@August 23, 2005, 8:18 PM
Someone check my numbers please:
Ok. I was thinking about the ram air effect folks were talking about. So, I ran these numbers through the ol' calculator (well, Excel, actually!!!):
Air slot to intake: 82 in^2 area
Someone check my numbers please:
Ok. I was thinking about the ram air effect folks were talking about. So, I ran these numbers through the ol' calculator (well, Excel, actually!!!):
Air slot to intake: 82 in^2 area
Legacy TMS Member
Joined: November 25, 2004
Posts: 989
Likes: 0
From: Lehigh Valley, PA
Calvin (nonsensez9).
It's from an e/m I received from Shannon/WMS. It can be found page 6 of this thread post #113. Here's the copy/paste with regard to the 82 sq. inches:
For those who wonder where the air comes from the main area is between
the hood and grill - there is about a 1/2" gap under there and it is
38" long. The ram air box has 3 holes in the front of it as well, one
in the center and one on each side, air comes up through these holes
from the grill. In total there is 82 square inches of area for air to
enter the box. In contrast, the stock air box has less than 15 square
inches of area for air to enter it.
Shannon
Western Motorsports Inc
www.wmsracing.com
Hope that helps!
RRRoamer. thanks for the math but my head's spinning 
It's from an e/m I received from Shannon/WMS. It can be found page 6 of this thread post #113. Here's the copy/paste with regard to the 82 sq. inches:
For those who wonder where the air comes from the main area is between
the hood and grill - there is about a 1/2" gap under there and it is
38" long. The ram air box has 3 holes in the front of it as well, one
in the center and one on each side, air comes up through these holes
from the grill. In total there is 82 square inches of area for air to
enter the box. In contrast, the stock air box has less than 15 square
inches of area for air to enter it.
Shannon
Western Motorsports Inc
www.wmsracing.com
Hope that helps!
RRRoamer. thanks for the math but my head's spinning
Originally posted by Redfire 05Gt@August 24, 2005, 9:22 AM
So, looking at the results of your math a little differently, for ram air to work and to prevent the intake from "sucking" air faster than it's hitting the front of the vehicle, at 100 mph/6K rpm you only need 8.2 in^2 of intake area, 50 mph/6K rpm would be 41 in^2, and at 10 mph/6K rpm you need the full 82 in^2, correct?
So, looking at the results of your math a little differently, for ram air to work and to prevent the intake from "sucking" air faster than it's hitting the front of the vehicle, at 100 mph/6K rpm you only need 8.2 in^2 of intake area, 50 mph/6K rpm would be 41 in^2, and at 10 mph/6K rpm you need the full 82 in^2, correct?
Cobra Member
Joined: November 27, 2004
Posts: 1,303
Likes: 2
From: Albuquerque, New Mexico
Redfire,
Pretty much! But keep in mind that there are a LOT of flow restrictions that are NOT taken into account in my math.
Don_w,
The stock 3.55:1 gears have had me at 10mph and 6000rpm on SEVERAL occasions. Of course, the tires were smoking at the time....
Pretty much! But keep in mind that there are a LOT of flow restrictions that are NOT taken into account in my math.
Don_w,
The stock 3.55:1 gears have had me at 10mph and 6000rpm on SEVERAL occasions. Of course, the tires were smoking at the time....
Originally posted by RRRoamer@August 24, 2005, 8:32 PM
The stock 3.55:1 gears have had me at 10mph and 6000rpm on SEVERAL occasions. Of course, the tires were smoking at the time....
The stock 3.55:1 gears have had me at 10mph and 6000rpm on SEVERAL occasions. Of course, the tires were smoking at the time....
http://home.comcast.net/~kresstek/dw1.wmv
Legacy TMS Member
Joined: December 8, 2004
Posts: 1,817
Likes: 4
Originally posted by don_w@August 24, 2005, 10:50 PM
Well... in that case, 6000rpm at less than 1 mph is realistic, too. http://home.comcast.net/~kresstek/dw1.wmv
Well... in that case, 6000rpm at less than 1 mph is realistic, too.
http://home.comcast.net/~kresstek/dw1.wmv
Bullitt Member
Joined: May 25, 2005
Posts: 300
Likes: 0
Originally posted by don_w@August 24, 2005, 4:15 PM
What rear gear ratio gets you to 10mph at 6000 rpm?... 26:1???
What rear gear ratio gets you to 10mph at 6000 rpm?... 26:1???
I sortof wish I had one now. There is a dyno day Sept 9 locally and Chris Johnson will be doing custom tunes. I guess he's the SCT guru.