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Drill and tap comp housing

Discussion in 'Turbo Tech Questions' started by stangman9897, Sep 2, 2009.

  1. stangman9897

    Joined:
    Mar 23, 2009
    I have two Garrett 60/48s can you drill and tap the comp housing for a fitting for waste gate signal instead of useing intake for waste gate signal. I see some turbos have one on them from the factory but the Garretts don't.?
     
    stangman9897, Sep 2, 2009
    #1

  2. TTAWD

    Joined:
    Feb 24, 2007
    Yes, get just above where the hose clamps on.
    This way you can clean any burrs off the inside of the hole.
     
    TTAWD, Sep 2, 2009
    #2

  3. stangman9897

    Joined:
    Mar 23, 2009
    Thank you sir :2thumbs:
     
    stangman9897, Sep 3, 2009
    #3

  4. zrg91gt

    Joined:
    Oct 18, 2008
    x2. That's what I did with my T-70. I also used teflon tape to seal it. No problems!
     
    zrg91gt, Sep 7, 2009
    #4

  5. mnm99

    Joined:
    Aug 27, 2008
    Can you guys explain what the difference would be between below the carb and at the housing?

    My thinking would be it would only be different when using a intercooler. The intercooler would make the pressure drop by the time it reached the carb. Say the gate opens at 5 PSI and connected to the compressor using a intercooler the carb sees like 3 PSI. The gate would look like it opens at 3 PSI if the gauge is hooked up at the carb. I'm by no means an expert here since I'm doing my first build, but I would think connecting to the manifold or below the carb it would be more accurate. Just my guess.....
     
    mnm99, Sep 8, 2009
    #5

  6. 10secgoal

    Joined:
    Jan 29, 2005
    The carb is still a restriction, the maniflod pressure will always be lower that the charge tube.
     
    10secgoal, Sep 8, 2009
    #6

  7. mnm99

    Joined:
    Aug 27, 2008
    ??? So where is the best place for the WG ?
     
    mnm99, Sep 8, 2009
    #7

  8. BlownShovel

    Joined:
    Apr 29, 2003
    Wastegate opens due to Pressure
    BOV opens via Vacuum
     
    BlownShovel, Sep 8, 2009
    #8
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