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Tech Threads Listing for Tech Week 5/27/09

Discussion in 'The Hokey Ass Message Board' started by zman, May 27, 2009.

  1. zman
    Joined: Apr 2, 2001
    Posts: 16,730

    zman
    Member
    from Garner, NC

  2. zman
    Joined: Apr 2, 2001
    Posts: 16,730

    zman
    Member
    from Garner, NC

  3. henryj429
    Joined: Jan 18, 2007
    Posts: 1,070

    henryj429
    Member

  4. buckeye_01
    Joined: Jun 20, 2005
    Posts: 1,441

    buckeye_01
    Member

    I can't wait for them to start rolling in.
     

  5. I like that alot. Simple and effective. Thanks.
     
  6. blown49
    Joined: Jul 25, 2004
    Posts: 2,212

    blown49
    Member Emeritus

  7. Little Wing
    Joined: Nov 25, 2005
    Posts: 7,504

    Little Wing
    Member
    from Northeast

  8. ago
    Joined: Oct 12, 2005
    Posts: 2,199

    ago
    Member
    from pgh. pa.

    e: Tech week! <hr style="color: rgb(229, 229, 229); background-color: rgb(229, 229, 229);" size="1"> <!-- / icon and title --> <!-- message --> [​IMG] boost reference edelbrock AFB carbs
    <hr style="color: rgb(229, 229, 229); background-color: rgb(229, 229, 229);" size="1"> <!-- / icon and title --> <!-- message --> This is how I modified my 2 500 Edelbrock AFB carbs on my blown 354 Hemi.

    The modification allows the carbs to get the true vacuum signal under boost. Without boost ref carbs the motor can be making boost and pulling a vacuum on the base of carb (blower sucking) and the metering rods are pulled down and lean out the mixture, when you need the opposite. This happens most when your throttle plates are not completely wide open and your blower is just starting to make boost,

    Machined up a 5/8" aluminum base plate, cross drill the plate with long 5/32 drill. Drill and tap base for 1/8" NPT thread. JB weld the notch in secondaries so vacuum signal will only pull from blower manifold. get a 4 hole carb gasket and punch new holes to reach power valve ports, ( in middle of throttle holes) Plum with 1/4" tubing. It works very well tested it with 2 vacuum gauges.
    <!-- / message --> <!-- attachments --> <fieldset class="fieldset"> <legend>Attached Thumbnails</legend> [​IMG]
    </fieldset>
     

    Attached Files:

  9. ago
    Joined: Oct 12, 2005
    Posts: 2,199

    ago
    Member
    from pgh. pa.

    I put 50 miles on the car since I modified it.
    It was too hard to read both vacuum gauges under boost and also drive, because when it comes on the boost (7PSI) its hang on. I need to test with a co-pilot. I have a LM-1 A/F meter I will connect back up and report back. The Edelbrock metering pistons are not like Holley they don't blow out. I have 5" metering spring on it. It does seem to run smoother off idle, I don't have a reason why, because under no boost it should act the same. I still have tuning to do, thats why LM-1 going back on. I thought about this a lot and I could see at not full throttle opening and under boost before modification it could be possible for the metering rods to see vacuum from the blower sucking and run lean .

    32 Ford 354 Hemi, 6-71, 2 afb 500cfm carbs, 114deg. blower cam, 5sp. Tremec, QC. front carb pri.jets .082, metering rods .053-.066, sec jets .098, rear carb pri jets .086, rods .058-.071, sec jets .095


    Ago
     
  10. bgbdlinc
    Joined: Jan 11, 2002
    Posts: 522

    bgbdlinc
    Member

  11. zman
    Joined: Apr 2, 2001
    Posts: 16,730

    zman
    Member
    from Garner, NC

  12. ago
    Joined: Oct 12, 2005
    Posts: 2,199

    ago
    Member
    from pgh. pa.

    People telling me to post my own thread, I'm not sure what they mean?


    Ago
     
  13. zman
    Joined: Apr 2, 2001
    Posts: 16,730

    zman
    Member
    from Garner, NC

    You had already posted that tech like a month ago. So I don't know if it would qualify. I merely list the "new" tech threads that show up during a tech week.
     
  14. bgbdlinc
    Joined: Jan 11, 2002
    Posts: 522

    bgbdlinc
    Member

    ...sorry, I misunderstood, your call....
     
  15. BZNEIL
    Joined: May 28, 2005
    Posts: 660

    BZNEIL
    Member

  16. ago
    Joined: Oct 12, 2005
    Posts: 2,199

    ago
    Member
    from pgh. pa.

    Z-man, I don't care if it qualifies,maybe someone who didn't see might use it,



    Ago
     
  17. Squablow
    Joined: Apr 26, 2005
    Posts: 17,446

    Squablow
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  18. metalman
    Joined: Dec 30, 2006
    Posts: 3,297

    metalman
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  19. Scott
    Joined: Dec 23, 2004
    Posts: 2,767

    Scott
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  20. All I've got is this......

    [​IMG]
     
  21. NTAPHSE
    Joined: Feb 5, 2006
    Posts: 1,028

    NTAPHSE
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  22. AntiBling
    Joined: Jul 25, 2004
    Posts: 612

    AntiBling
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  23. rob lee
    Joined: Jul 30, 2006
    Posts: 1,331

    rob lee
    Member
    from omaha,ne

  24. choppintops
    Joined: Dec 9, 2008
    Posts: 1,460

    choppintops
    BANNED

    When does the week end? I have one I'm putting together.
     
  25. Kilroy
    Joined: Aug 2, 2001
    Posts: 3,227

    Kilroy
    Member
    from Orange, Ca

  26. 34FordConv
    Joined: Oct 31, 2007
    Posts: 185

    34FordConv
    Member

  27. Rob Kozak
    Joined: Aug 18, 2005
    Posts: 442

    Rob Kozak
    Member

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