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Throttle body bypass - is there a downside?

This is a discussion on Throttle body bypass - is there a downside? within the General Help forums, part of the LSx Technical Help Section category; the damn tb won't freeze... the coolant that is inside it will already have antifreeze in it....

  1. #21
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    the damn tb won't freeze... the coolant that is inside it will already have antifreeze in it.

  2. #22
    Moderator Firebirdjones's Avatar
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    It won't freeze up the throttle body if you remove the coolant bypass line. I have it removed on my wifes daily driver,,,here in Ohio it gets below zero degrees with windchills even colder. Have had mine bypassed for years and it's never left my wife stranded once, driven daily.

    There is nothing there to freeze or ice up,,,not sure where this theory came from,,,,if it were true then all the carburated cars would have been stranded in the winter a long time ago, they never had any coolant lines running through the carbs ,,,lol.

  3. #23
    Senior Member camarojunky74's Avatar
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    white, white and pewter
    Rip99SSA4,74Z28M4,02SSM6

    agreed

  4. #24
    Senior Member JonB's Avatar
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    Its not the coolant that will freeze it is the shaft. I think the theory is the condesation of a hot to cold motor will freeze causing the tb shaft to be frozen closed. Again this is only theory I have never meet anybody that has had this problem or even heard of anyone actually haveing this problem.

  5. #25
    Member Empatho's Avatar
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    02 Z28

    do not do it unless you whant some easy HP, this is one of the simplest and easiest free mods, just do it and dont look back
    2002 Z28 Auto (3.23 gears)
    Mods
    Lid, UD pulley, Shift Kit, 160 Thermo, Y-pipe, Panhard, TB bypass, Bellow, K&N, Strut Brace, Flowmaster, weight reduction.

  6. #26
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    94 z28

    Quote Originally Posted by camarojunky74 View Post
    you can also buy a kit from ebay
    Oh that's good, because I hate looking for those parts, lol.

    Anyways, here is one of them:

    http://cgi.ebay.com/ebaymotors/93-97...spagenameZWDVW

    Any way you can have "cheap" parts that won't work well with the bypass? By "cheap" I mean...say machine bent vs mandrel bent for exhaust systems.

  7. #27
    Member AiDRocks's Avatar
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    Quote Originally Posted by xinthenight View Post
    Oh that's good, because I hate looking for those parts, lol.

    Anyways, here is one of them:

    http://cgi.ebay.com/ebaymotors/93-97...spagenameZWDVW

    Any way you can have "cheap" parts that won't work well with the bypass? By "cheap" I mean...say machine bent vs mandrel bent for exhaust systems.
    Your local hardware store would have all the parts for alot cheaper.

  8. #28
    Moderator Firebirdjones's Avatar
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    Quote Originally Posted by JonB View Post
    Its not the coolant that will freeze it is the shaft. I think the theory is the condesation of a hot to cold motor will freeze causing the tb shaft to be frozen closed. Again this is only theory I have never meet anybody that has had this problem or even heard of anyone actually haveing this problem.
    That will never happen. The only reason for the coolant running through the throttle body was to heat up the incoming air for emissions reasons. It's the same reason GM installs hot platinum spark plugs, same reason for cat converters, same reason for the 195 thermostat,,,,the hotter they can make these engines, the incoming air, and the out going air,,,, the more hydrocarbons it will burn off. Problem is all this stuff robs horsepower.

  9. #29
    Senior Member camarojunky74's Avatar
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    white, white and pewter
    Rip99SSA4,74Z28M4,02SSM6

    agreed once again lol, less hydro carbons less carbon monixide, better enviroment

  10. #30
    Member 99'CajunFirehawk157's Avatar
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    99 Firehawk #157 Roadster

    Keep in mind both hose sizes are NOT 3/8, one side is 5/16" (mybe 1/4"?) so you either have to force a 3/8" fitting into a 5/16" hose or buy a 3/8" x 5/16" brass fitting if your local parts store has one? Also, anyone ever figure out which direction the coolant flows AND if its possible to cap the fitting off at the raditor and cap the engine? IE: no hose?
    PLMK
    Last edited by 99'CajunFirehawk157; 01-05-2008 at 12:59 PM.

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