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T25 and 14b turbo setup questions

Discussion in 'Forced Induction' started by allmotord16rex, Sep 20, 2004.

  1. allmotord16rex

    allmotord16rex Senior Member

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    OK, I have a DOHC ZC and Im thinkin about doing the budget boost setup. I wanna use a t25 or 14b, preferably the 14b. Does anyone know what the wastegate is set at stock on the 14b? How do you lower this setting? My Honda Tuning says to bend the actuator towards the turbo .25 inches, but I dont exactly understand what this means. Finally, these turbos are water and oil cooled, so do you necessarily have to implement the water cooling? Thanks for the help.
     
  2. phunky.buddha

    phunky.buddha Admin with a big stick Admin VIP

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    Stock boost on the TD05H-14B from 1G DSMs is 8 psi I believe.

    Cooling- almost all factory turbochargers are water cooled and oil cooled. You run the oil through the bearing in the center, and the water is the same that cools your engine. With the water cooling, you eliminate the need for a turbo timer, and you reduce the chances of coking the oil from running hard and then shutting down the car without an extended cool down period. I would definitely hook up the water lines if you can- otherwise buy a turbo timer.

    Bending the actuator allows you to change the boost level that the wastegate opens at- I don't know if bending it a quarter inch reduces max boost or increases it though, and I definitely don't know by how much.
     
  3. allmotord16rex

    allmotord16rex Senior Member

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    Thanks Cal. 8 psi is what I want to run anyway so that will be good. The 14b is a much more efficient turbo so I think that I will probably go with it. Are there any key differences between using the 14b and t25, especially pertaining to difficulty? Thanks again guys.
     
  4. phunky.buddha

    phunky.buddha Admin with a big stick Admin VIP

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    I really don't know about difference in "difficulty", but they do use two different types of flanges. You'll want to make sure you have the proper exhaust manifold setup to connect to whichever turbo you want to use.

    The 14B is larger than the T25, so you'll get a more efficient charge (cooler temp) on your DOHC ZC at higher boost levels. It's also dirt cheap- you should be able to snag one for about $100 or less in decent condition.
     
  5. pissedoffsol

    pissedoffsol RETIRED

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    yeah, the manifoldis the hardest part, since therees few made for it.

    if it were me, i'd cut up an HF manifold (with the cat up high) and weld the 14b flange on to it. nice and cheap
     
  6. allmotord16rex

    allmotord16rex Senior Member

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    Yeah, I plan on using an HF manifold and an adapter plate with the 14b. When you say I need the proper exhaust manifold setup, is this what you are talking about Calesta?
     
  7. phunky.buddha

    phunky.buddha Admin with a big stick Admin VIP

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    Yeah, that's what I'm talking about. Just make sure you have the right flange so your manifold will bolt up to your turbo.
     
  8. Seany-izzle

    Seany-izzle New Member

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    would a t25 adaptor plate work??
     
  9. allmotord16rex

    allmotord16rex Senior Member

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    The plates that I see are usually for both the t25 and 14b. I think that if you use a 14b with that plate, you can only use 3 of the 4 holes to bolt them together. I've seen some people simply weld that part of the plate to the turbo. Any one else ever seen anything about this?
     
  10. StealthMode

    StealthMode Kung Foolin'

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    i don't mean to threadjack, but is the adapter plate for a t28 the same? i just got mine, and i'm looking for an adapter plate. aalso, anyone know where to find them?
     
  11. allmotord16rex

    allmotord16rex Senior Member

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    Calesta, maybe you can help me out on this. Do you know what the wastegate is set at on the Garret T3 turbos from the Volvo and from the Saabs. Thanks.
     
  12. pissedoffsol

    pissedoffsol RETIRED

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    im sure they are all different and will vary by car, but most factory cars run 6-10 psi.
     
  13. phunky.buddha

    phunky.buddha Admin with a big stick Admin VIP

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    Yup, I don't know what the wastegates are set at on other factory turbos. I just know the DSM turbo specs because I've been looking through DSM turbo maps and DSM turbo info. Don't ask why.

    :p :) :) :)
     
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