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SIMPLE question: what is your intake air temp?

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Old Sep 11, 2012 | 09:15 PM
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Default SIMPLE question: what is your intake air temp?

guys without any meth/alky spray - while logging data, what is your intake air temp and at full boost what does it peak at?
no boost air temp: xx psi boost air temp:
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Old Sep 12, 2012 | 10:55 AM
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113 at idle according to HP tuners and that's in the garage will be different with temp outside. Barely breaking in motor don't have any numbers under boost.
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Old Sep 12, 2012 | 11:07 AM
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No boost air temp is always 5 degrees above ambient. Full boost by the end of the track it will be up 40 degrees past that.
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Old Sep 12, 2012 | 12:20 PM
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Mine goes up 30 degree on a 1/4 mile pass. 95 degree day it was 125 at the top. E85 and Treadstone air to air.
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Old Sep 12, 2012 | 12:21 PM
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I should add to the question - what octane fuel?
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Old Sep 12, 2012 | 05:29 PM
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wow - so far, mine looks odd.
DI-SC at 10psi mine climbs ~60 degrees in a full pull from non boosted air temp.

f- body twin intercoolers. Wish I could fit a big front mount

Of course the car likes cooler weather, but from an 85 degree day to a 75 degree day, the lower intake temp shows full pulls with boost climbing less = ~ 40 degrees.

Even with low (8.65:1) compression, guess I could use alky/meth.
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Old Sep 12, 2012 | 05:41 PM
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Cruising around mine is 25 above ambient. Under full boost im at a nice cozy 270+
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Old Sep 12, 2012 | 05:48 PM
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Originally Posted by silver_82
cruising around mine is 25 above ambient. Under full boost im at a nice cozy 270+
really? So on an 80 degree day, you cruise at ~105 degrees - then full boost it hits 270 degrees?
How much boost, and any detonation?
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Old Sep 12, 2012 | 06:10 PM
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Cruising around I stay at ambient... and in a 3rd gear blast through the gear, it goes up 3-5 degrees.
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Old Sep 12, 2012 | 06:34 PM
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very close to ambient and rises usually 40 deg at the most on shitty days

93 octane and methanol 20lbs of boost
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Old Sep 12, 2012 | 06:40 PM
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Originally Posted by chief455
really? So on an 80 degree day, you cruise at ~105 degrees - then full boost it hits 270 degrees?
How much boost, and any detonation?

Yep. No intercooler no meth. 17lbs of boost at that temp. No detonation
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Old Sep 12, 2012 | 07:14 PM
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Originally Posted by silver_82
Yep. No intercooler no meth. 17lbs of boost at that temp. No detonation
wow - wow
I'd ask about your timing, but i need to fix my own issues

mine does not like the heat.
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Old Sep 12, 2012 | 07:20 PM
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Originally Posted by chief455
wow - so far, mine looks odd.
DI-SC at 10psi mine climbs ~60 degrees in a full pull from non boosted air temp.

f- body twin intercoolers. Wish I could fit a big front mount

Of course the car likes cooler weather, but from an 85 degree day to a 75 degree day, the lower intake temp shows full pulls with boost climbing less = ~ 40 degrees.

Even with low (8.65:1) compression, guess I could use alky/meth.
I ditched the twins when i went to the f1c from the d1. I swore i would never ditch the twins cause I did not want to cut up the front end. Well I did it and glad I did. 5 degrees above ambient and about 30-40 degrees higher without the meth on. 93 octane and 10.3 to 1 compression 16-17lbs of boost.
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Old Sep 12, 2012 | 08:10 PM
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Originally Posted by josepy121380
I ditched the twins when i went to the f1c from the d1. I swore i would never ditch the twins cause I did not want to cut up the front end. Well I did it and glad I did. 5 degrees above ambient and about 30-40 degrees higher without the meth on. 93 octane and 10.3 to 1 compression 16-17lbs of boost.
Exactly.
I am not even sure where to begin fitting a frount mount in my 95, and retain my A/C!
I wonder if I ditch the twins and that mess of tubing then just run meth alone....seems like the twins don't really do much.
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Old Sep 12, 2012 | 10:05 PM
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You guys should be careful with your iat readings, if your only getting 60* temp rise from those tiny dual inefficient IC's id be worried about accurate temp readings. Some sensors have temerature saturation times and are slow to respond to changes. For example a commonly used gm iat sensor has a saturation time of 15 secs to be 63% accurate.

There are some spec sheets out there for sensors but you have to do some research to find the info. Just something to think about

There are also calulators out there that have you put in ambient temps, how many lbs of boost your running and the effieciency zone your in on your compressor map and itll spit out the temp of the pressured air
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Old Sep 12, 2012 | 10:38 PM
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Originally Posted by chief455
Exactly.
I am not even sure where to begin fitting a frount mount in my 95, and retain my A/C!
I wonder if I ditch the twins and that mess of tubing then just run meth alone....seems like the twins don't really do much.
Gotta be a way to do it. Not sure how the 95 is but i had to ditch my ac. Never used it anyways. F1C needed more room.
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Old Sep 12, 2012 | 10:43 PM
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^ thats me. I realized I never turned on the A/C so I am selling and saving the weight and cleaning up the engine bay.
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Old Sep 12, 2012 | 11:11 PM
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Originally Posted by silver_82
You guys should be careful with your iat readings, if your only getting 60* temp rise from those tiny dual inefficient IC's id be worried about accurate temp readings. Some sensors have temerature saturation times and are slow to respond to changes. For example a commonly used gm iat sensor has a saturation time of 15 secs to be 63% accurate.

There are some spec sheets out there for sensors but you have to do some research to find the info. Just something to think about

There are also calulators out there that have you put in ambient temps, how many lbs of boost your running and the effieciency zone your in on your compressor map and itll spit out the temp of the pressured air
That sounds very realistic = slow to respond with a 'true' reading.
However - in the end, getting the desired boost without detonation is the end result I'd think. So, the actal temp becomes a moot point.
I just wanted to see if my readings were way off, and seems to be pretty consistent at 40-60* rise from the GM iat sensors under boost.

How/where are you getting your sensor reading?
Thanks for the tech as well.
Originally Posted by josepy121380
Gotta be a way to do it. Not sure how the 95 is but i had to ditch my ac. Never used it anyways. F1C needed more room.
I do use my A/C at least want to!
Looking at some build pics, your FMIC is forward of the hood latch anyway, so would not hit the radiator/condensor area.
I'll search for an LT1 with front mount, see how it was done.
thanks
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Old Sep 12, 2012 | 11:42 PM
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Originally Posted by chief455
That sounds very realistic = slow to respond

I do use my A/C at least want to!
Looking at some build pics, your FMIC is forward of the hood latch anyway, so would not hit the radiator/condensor area.
I'll search for an LT1 with front mount, see how it was done.
thanks
I cant imagine them being to much different. I only removed the ac so i could slide the rad forward more. My FMIC is out as far as it could possibly go.
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Old Sep 13, 2012 | 06:59 AM
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I've gone so far as to after making a spirited run get out of the car and use a temp gun to measure the inlet and outlet of the intercooler and with ambient temps of 88 degrees, I saw 120 degrees on the inlet side of the intercooler and 91 degrees on the outlet.

My IAT during that blast went from 88 to 94 degrees, so I'd say it's pretty accurate. Not exact, but pretty accurate.
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