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  1. #76
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    So the PT 7675 has a bigger compressor wheel but smaller exhaust turbine, and the BW 75/83 has a slightly smaller compressor wheel but the bigger exhaust turbine? Are they both dual ball bearing? Which one is newer?

    I would assume that BW 75/83 is setup for more top end power while trying to keep spool time at a minimum by using the same size compressor wheel as the smaller exhaust housings.

  2. #77
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    Click here to enlarge Originally Posted by SlicktopTTZ Click here to enlarge
    So the PT 7675 has a bigger compressor wheel but smaller exhaust turbine, and the BW 75/83 has a slightly smaller compressor wheel but the bigger exhaust turbine? Are they both dual ball bearing? Which one is newer?

    I would assume that BW 75/83 is setup for more top end power while trying to keep spool time at a minimum by using the same size compressor wheel as the smaller exhaust housings.
    im starting a new thread, we can continue the talk there Click here to enlarge will be up in a sec

  3. #78
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    Click here to enlarge Originally Posted by SlicktopTTZ Click here to enlarge
    So the PT 7675 has a bigger compressor wheel but smaller exhaust turbine, and the BW 75/83 has a slightly smaller compressor wheel but the bigger exhaust turbine? Are they both dual ball bearing? Which one is newer?

    I would assume that BW 75/83 is setup for more top end power while trying to keep spool time at a minimum by using the same size compressor wheel as the smaller exhaust housings.
    Please make your same post with questions in here: http://www.bimmerboost.com/showthrea...he-8sec-is-ON-!!

    Stage 2 or 2.5 E9X M3 S65 V8 supercharger kit for sale
    : http://www.boostaddict.com/showthrea...r-kit-for-sale

  4. #79
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    Click here to enlarge Originally Posted by karel Click here to enlarge
    Hey..true my first week was horrible.. and at end of the week i was getting better, then a friends car caught on fire on a race an i tried yo put it out and cracked it again so no im on first week 2 second time.
    WTF dude...I wish you a good "without bad luck" long period.You deserve it I think!

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