Intake air temps
#2678669
07/18/19 12:04 PM
07/18/19 12:04 PM
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Joined: Dec 2007
Posts: 12,593 Great Neck,LI,new york
hemi-itis
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I have asked on many forums at what IAT does performance fall off without any real replies. With my combo it starts falling off at 170*.Threw more fuel & boost at it with no performace gain.140 MPH was like a wall that day at atco. Been looking at W/M for intercooling but I'm now thinking nitrous for the race mode. I wouldn't doubt that a 50 shot could give me over 100 HP due to the lower IAT. What do you think??
HEMI-ITIS has no cure. My condition is fully BLOWN!!
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Re: Intake air temps
[Re: 451Mopar]
#2678683
07/18/19 12:29 PM
07/18/19 12:29 PM
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Joined: Jan 2003
Posts: 14,545 So. Burlington, Vt.
fast68plymouth
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I Live Here
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So. Burlington, Vt.
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What’s the IAT on something like a Hellcat with a pulley and a tune?
68 Satellite, 383 with stock 906’s, 3550lbs, 11.18@123 Dealer for Comp Cams/Indy Heads
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Re: Intake air temps
[Re: A/MP]
#2678770
07/18/19 04:32 PM
07/18/19 04:32 PM
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Joined: Aug 2003
Posts: 43,913 Bend,OR USA
Cab_Burge
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I Win
Joined: Aug 2003
Posts: 43,913
Bend,OR USA
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What are running as fuel? VP 16 will help you make the power and avoid any detonation. Q16 will make it even better as long as you fatten it up enough and can stand the smell
Last edited by Cab_Burge; 07/18/19 04:33 PM.
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
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Re: Intake air temps
[Re: fast68plymouth]
#2679057
07/19/19 10:44 AM
07/19/19 10:44 AM
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Joined: Dec 2007
Posts: 12,593 Great Neck,LI,new york
hemi-itis
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OP
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What’s the IAT on something like a Hellcat with a pulley and a tune? That is a great question,they use an a/c evap to intercool. I am leaning towards the NO2........ Cab,if the meth has all the cooling properties required,why do they even use water??
HEMI-ITIS has no cure. My condition is fully BLOWN!!
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Re: Intake air temps
[Re: hemi-itis]
#2679079
07/19/19 11:35 AM
07/19/19 11:35 AM
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Joined: Aug 2003
Posts: 43,913 Bend,OR USA
Cab_Burge
I Win
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I Win
Joined: Aug 2003
Posts: 43,913
Bend,OR USA
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What’s the IAT on something like a Hellcat with a pulley and a tune? That is a great question,they use an a/c evap to intercool. I am leaning towards the NO2........ Cab,if the meth has all the cooling properties required,why do they even use water?? I have no idea, you know the deal about some guys can't drink straight whiskey without water in it, correct Maybe it is the same deal on their cars AKA aside adding water to the mix has never made sense to me I stated thinking about putting room temperature water on your skin versus putting alcohol on your skin and which one cool down the quickest Same thing in the motor, correct : up:
Last edited by Cab_Burge; 07/19/19 11:37 AM.
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
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Re: Intake air temps
[Re: hemi-itis]
#2679081
07/19/19 11:39 AM
07/19/19 11:39 AM
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Joined: Dec 2006
Posts: 1,178 Indy
FlyFish
super stock
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super stock
Joined: Dec 2006
Posts: 1,178
Indy
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What’s the IAT on something like a Hellcat with a pulley and a tune? That is a great question,they use an a/c evap to intercool. I am leaning towards the N2O........ Cab,if the meth has all the cooling properties required,why do they even use water?? Fixed it for ya...carry on.
67 Barracuda street car, 408, e85, 1.38 60', 6.44 @105.9 in the 1/8 mile, 10.19 @130.5 in the 1/4...so far....
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Re: Intake air temps
[Re: FlyFish]
#2679092
07/19/19 12:18 PM
07/19/19 12:18 PM
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Joined: Dec 2007
Posts: 12,593 Great Neck,LI,new york
hemi-itis
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OP
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What’s the IAT on something like a Hellcat with a pulley and a tune? That is a great question,they use an a/c evap to intercool. I am leaning towards the N2O........ Cab,if the meth has all the cooling properties required,why do they even use water?? Fixed it for ya...carry on. OOOPS
HEMI-ITIS has no cure. My condition is fully BLOWN!!
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Re: Intake air temps
[Re: hemi-itis]
#2679173
07/19/19 04:39 PM
07/19/19 04:39 PM
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Joined: Jan 2003
Posts: 14,545 So. Burlington, Vt.
fast68plymouth
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I Live Here
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So. Burlington, Vt.
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The Hellcat doesn’t have the extra IAT cooling provided by the A/C unit like the Demon does...... but it does untilize s a pair of intercoolers. Doing a little digging....... The goal is to reduce the temperature of the intake air to less than 140 degrees Fahrenheit so the water and antifreeze mixture is maintained at about 100 degrees F.
68 Satellite, 383 with stock 906’s, 3550lbs, 11.18@123 Dealer for Comp Cams/Indy Heads
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Re: Intake air temps
[Re: fast68plymouth]
#2679177
07/19/19 04:51 PM
07/19/19 04:51 PM
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Joined: Jan 2003
Posts: 8,104 Tulsa OK
Bad340fish
master
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master
Joined: Jan 2003
Posts: 8,104
Tulsa OK
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The Hellcat doesn’t have the extra IAT cooling provided by the A/C unit like the Demon does...... but it does untilize s a pair of intercoolers. Doing a little digging....... The goal is to reduce the temperature of the intake air to less than 140 degrees Fahrenheit so the water and antifreeze mixture is maintained at about 100 degrees F. Supposedly they can run flat out for 20 minutes before the ECU dials things back due to heat. Probably pretty close to out of gas at that point also lol
68 Barracuda Formula S 340
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Re: Intake air temps
[Re: fast68plymouth]
#2679225
07/19/19 07:47 PM
07/19/19 07:47 PM
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Superfreak
Unregistered
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Superfreak
Unregistered
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Take the roots off and go with a Whipple twin screw.
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Re: Intake air temps
[Re: ]
#2679263
07/19/19 10:11 PM
07/19/19 10:11 PM
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Joined: Dec 2007
Posts: 12,593 Great Neck,LI,new york
hemi-itis
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Take the roots off and go with a Whipple twin screw. Out of my budget but a nice upgrade
HEMI-ITIS has no cure. My condition is fully BLOWN!!
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Re: Intake air temps
[Re: A/MP]
#2679694
07/21/19 09:59 AM
07/21/19 09:59 AM
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Joined: Dec 2007
Posts: 12,593 Great Neck,LI,new york
hemi-itis
OP
I Live Here
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OP
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Joined: Dec 2007
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Great Neck,LI,new york
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What are running as fuel? VP 16 will help you make the power and avoid any detonation. That would be more octane that I need.I have not gone over an effective CR of 15: and will stay there untill I get it very happy.I'm getting very close with the carbs and sill experimenting with timing.Last 2 times out the top end charge is not there When the cooler air comes in the fall I will check plugs after every run instead of just reading the racepak. I will also try different heat ranges. I have the start and cruise lookin good,now need to work on WOT. Question........will the plugs read the same at the top of 2nd just into high gear as they will at the stripe? I go over the stripe at 64/6500 rpm
HEMI-ITIS has no cure. My condition is fully BLOWN!!
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