2nd Generation Specific 1986-1992 Discussion

Some Interesting Datalog Info On A Turbofc

Old 06-24-2004, 01:47 AM
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22deg C (71 deg F) is the intake temp before we start the run

ambient was 55deg F

from 0-120mph, 10psi stock turbo



intake temps reach 65 deg C or 149deg F,

they quickly fall after we are out of boost, but all I know is thats fu()&* dangerous!



@ 10psi the duty cycle is at 86%, about the max you want to run on the fuel injectors. Stock fuel pump/fpr/base fuel pressure(j9?) Air fuel ratio was 11.5/6 at this psi,

@ 14psi afr is @ 10.4 @ 96% duty cycle...
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Old 06-24-2004, 02:20 AM
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Originally Posted by 1Revvin7' date='Jun 24 2004, 02:47 AM
intake temps reach 65 deg C or 149deg F,

they quickly fall after we are out of boost, but all I know is thats fu()&* dangerous!
What would that lead to in the huge jump in temperature? And then it suddenly drops off? Just lead to detonation, flooding? I am new to it all pretty much.
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Old 06-24-2004, 10:33 AM
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just keep your air temp map setup so that it richens you up as it gets hotter
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Old 06-24-2004, 12:04 PM
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Originally Posted by RowTarEh?' date='Jun 24 2004, 02:20 AM
What would that lead to in the huge jump in temperature? And then it suddenly drops off? Just lead to detonation, flooding? I am new to it all pretty much.
They jump so high because the turbo produces a lot of heat as it compresses the intake charge. I've noticed it falls off really fast when you let off on the freeway.
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Old 06-24-2004, 12:16 PM
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my friend told me about this great idea he said build a box at the end of your intake and drop a bunch of dry ice in it to cool off temps... i was thinking this could be done on the intake intercooler and turbo
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Old 06-24-2004, 02:35 PM
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I just remembered he has a boost leak, so those air temp #s are not accurate for 10psi. After its fixed I will post the results again.
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