1995 E36 328i throttle body coolant pipes

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  1. 1995 E36 328i throttle body coolant pipes 
    #1
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    speerzie's Car Details
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    hi all, has any one taken the coolant pipes off the tb and bypassed the tb? i did this on my old saab turbo and had good results, just seems a bit odd to warm the air up just as it enters the manifold. or do they tend to ice up?
     
     

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    You won't see any gains at all.

    The coolant pipes enable the body to warm up at the same rate as the engine. This allows the body to function perfectly after allowing for the thermal expansion of the butterfly and bore.
     
     

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    speerzie (09-12-2010)

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    Quote Originally Posted by alpina527 View Post
    This allows the body to function perfectly after allowing for the thermal expansion of the butterfly and bore.
    Where did you get this information from?

    I've removed the coolant lines from the throttle body so I could attach a coolant temp sensor in the block

    I've had it like this for what must be about 5 months and the only change is that the throttle body is no longer hot to the touch.

    I agree with you though there is no performance gain
     
     

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    it is also there to stop the body icing up in very cold weather

    some of import cars and motor bikes had this problem,but was worse on the old carbs type cars
     
     

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    Quote Originally Posted by x5nut View Post
    it is also there to stop the body icing up in very cold weather

    some of import cars and motor bikes had this problem,but was worse on the old carbs type cars
    I second this i tried and tested this on my old fiat coupe ended up with a iced up throttle oopsie but live and learn and there was no power gain at all


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    I have had carb freeze on a r5gtt before but only because it had a massive front mount intercooler. Thermal expansion? The throttle plate is made out of brass which does not conduct heat so stays the same size where as the same cannot be said for aluminium.
     
     

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    i've copy and pasted this from another site. . .

    I installed a simple 1/4 inch ball valve on the coolant line to my Mazda6 throttle body. I flip it closed if the weather is hot, and leave it open the rest of the year. There is no need to connect the two hoses together - you just want to interrupt the flow of hot coolant.
    the grease on my fingers isn't a stain! its my birth mark!
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