SIMPLE question: what is your intake air temp?
09-12-2012, 05:29 PM
#6
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.
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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09-12-2012, 06:40 PM
#11
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09-12-2012, 07:20 PM
#13
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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.
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.
09-12-2012, 08:10 PM
#14
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.
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.
09-12-2012, 10:05 PM
#15
TECH Apprentice
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
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
09-12-2012, 11:11 PM
#18
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
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
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.
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
09-13-2012, 06:59 AM
#20
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.
My IAT during that blast went from 88 to 94 degrees, so I'd say it's pretty accurate. Not exact, but pretty accurate.