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Thread: Boost & temp ???

  1. #1
    Junior SCH Member
    Join Date
    Feb 2004
    Posts
    13

    Boost & temp ???

    I have been doing alot of data logging & have noticed something that doesnt make much sence to me.

    When I logged my car when it was cool out 40-45 deg F I was getting 11.5 to 12 lbs at 6200.
    Now that it is in the 90s I have seen as much as 14.6 lbs at 6200.
    No changes to the car at all.

    I'm using the Zeitronix WB & there boost sensor.

    Could it be that I was getting some belt slipage when its cold & when its hot the belt is gripping better ??
    I know its an odd idea but I dont know what else it could be.

    I would think hotter less dense air would produce lower boost ??

  2. #2
    SCH Moderator BLOWNBY's Avatar
    Join Date
    Mar 2004
    Posts
    1,380
    Actually as temp goes up in a given volume pressure will go up. 2.5 pounds seems a bit much so some belt slip may have been to blame for a pound or so.
    351 "stockshort block": -Vortech T-trim (21 psi), Trick Flow Heads, Lunati Cam, Weldon fuel system, Lentech AOD., 3.55 gears, 27" Hoosier QTP's, 3500# with me

    -545 rwhp
    -10.02 @ 135mph---Is 9.99 to much to ask?:freaks:
    -1.42-- 60'
    Quote Originally Posted by regattacoupe
    Since when do they let Homo's with 700rwhp that run 11's be a SCH mod? :shocked: :obscene: :D

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