1. This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.

Iternal/External Wastegate

Discussion in 'Forced Induction' started by Del Slw, Feb 16, 2004.

  1. Del Slw

    Del Slw Member

    Messages:
    61
    Likes Received:
    0
    Joined:
    Sep 30, 2003
    Location:
    Cincinnati, OH
    which one is better? or is each one better for different applications?
    i'm lookin at runnin a t3/t4 on only 7-10lbs.
    whats the benefits and negatives of each style?

    -Robbie
     
  2. Cashizslick

    Cashizslick !i!i!i!i!i!i!i!i!i!i!i!

    Messages:
    5,751
    Likes Received:
    37
    Joined:
    Aug 15, 2003
    well, the internal one is part of the turbocharger itself. The external one is higher quality and better for higher boost apps.
     
  3. pissedoffsol

    pissedoffsol RETIRED

    Messages:
    49,693
    Likes Received:
    53
    Joined:
    Sep 28, 2002
    Location:
    Retirement Home
    you'll be hard pressed to find a t3/t4 with an internal gate...
     
  4. Loco Honkey

    Loco Honkey Banned

    Messages:
    3,646
    Likes Received:
    0
    Joined:
    Jun 5, 2003

    You're only half right. The point you make about an external gate being higher quality is not fact, but rather your OPINION. Keep your opinions out of your responses unless you label them as such.

    There is no proof that internal wastegates are of any less quality than an external gate.
     
  5. jamesA

    jamesA Well known pissed off telephone guy VIP

    Messages:
    16,127
    Likes Received:
    1,020
    Joined:
    Aug 10, 2003

    Whats the definition of an internal gate?

    This is my T3/T4, isn't this round canister a waste gate?

    [​IMG]
     
  6. IDMaxGuy

    IDMaxGuy Senior Member

    Messages:
    1,479
    Likes Received:
    2
    Joined:
    Apr 8, 2003
    Location:
    MO
    IMO internal is just as good as external, i mean, internal came with the turbo, it was made to regulate boost... so that is what it is gonna do... unless you start running HIGH boost applications where boost creep is going to be your worst enemy, then worry about it... and like B said, most t3/t4s dont even have internal...
     
  7. NotUrAverage_Si

    NotUrAverage_Si Senior Member

    Messages:
    2,255
    Likes Received:
    0
    Joined:
    Jul 9, 2003
    Location:
    :/
    yeah I don't really see how an external wastegate can be higher quality than an internal that was built in the turbo to begin with. I do however like external wastegates better though. :D
     
  8. pissedoffsol

    pissedoffsol RETIRED

    Messages:
    49,693
    Likes Received:
    53
    Joined:
    Sep 28, 2002
    Location:
    Retirement Home
    by design, internals are better.
    but, they are limited in the power handeling capabilities.

    james, thats an internal gates turbo.
     
  9. Del Slw

    Del Slw Member

    Messages:
    61
    Likes Received:
    0
    Joined:
    Sep 30, 2003
    Location:
    Cincinnati, OH
    if you have an external wastegate....i've seen that almost everyone just has dump tube. is there any disadvantages to routing it back into the exhaust piping?
     
  10. pissedoffsol

    pissedoffsol RETIRED

    Messages:
    49,693
    Likes Received:
    53
    Joined:
    Sep 28, 2002
    Location:
    Retirement Home
    it disrupts flow of the exhaust, and its expensive to get a downpipe made like that.

    if you do go back in, do it as CLOSE to in front of the cat as you can.. the further back, the better.
     
  11. Del Slw

    Del Slw Member

    Messages:
    61
    Likes Received:
    0
    Joined:
    Sep 30, 2003
    Location:
    Cincinnati, OH
    so i'd basically want my downpipe and dumptube to come together like a Y before going into my cat?
     
  12. Loco Honkey

    Loco Honkey Banned

    Messages:
    3,646
    Likes Received:
    0
    Joined:
    Jun 5, 2003
    External wastegates are better for high performance applications (300+ HP) because they control boost more accurately at high flow/ PSI levels. This is at least the 2nd time I've said this in the past two weeks. PAY ATTENTION, PEOPLE!

    Routing a dump tube... if you can get away with it, run it all the way back to the back of the car. Venting it anywhere in front of the B pillar is absofuckinglutly retarded for several reasons- 1) highly illegal, 2) highly deadly, 3) highly loud which brings us back to #1, and 4) half assed. If you're going to join it with the downpipe, make sure that the junction is at least 18" downstream of the turbine wheel.
     
Verification:
Draft saved Draft deleted

Share This Page