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Single Vs. Twin Turbo

Discussion in 'Forced Induction' started by YangpaNemsay, May 25, 2003.

  1. YangpaNemsay

    YangpaNemsay Senior Member

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    What extra parts do you need to make a single turbo go custom twin turbo?
     
  2. K2e2vin

    K2e2vin Senior Member

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    custom exaust manifold and piping.
     
  3. lsvtec hatch93

    lsvtec hatch93 Senior Member

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    if you are thinking about doing that to a 4cyl. honda your an idiot.
     
  4. pissedoffsol

    pissedoffsol RETIRED

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    twin turbo is NOT better than single. look at all the supra guys who UPGRADE to a single turbo.
     
  5. K2e2vin

    K2e2vin Senior Member

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    it depends on your app. from dyno charts; single=better top end boost, tt=better low rpm response.

    but for a honda TT is not worth it. there are some dragcars that run TT on H22s but those engines dont last long.
     
  6. Capt. Orygun

    Capt. Orygun Win the Day

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    honda TTTTTTTTTTTTTTTTTTTTTTTTTTTT y0!
     
  7. dcsports413

    dcsports413 Senior Member

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    This depends on the car. For a supra (inline 6), yes single T-78 or T-88 is better than than TT.

    However, i've heard for V-shaped motors twin turbos work better.

    My buddy has 96 supra w/Greddy T-78! :D :D
     
  8. boostdGS

    boostdGS Member

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    If i were a supra owner, i wouldn't want a turbo as big as a t88, way too big, way too laggy. You won't make any power until after 5500 rpms, and even then it's just in short bursts.
    When TT setups on supras are done correctly with bigger sequential turbos they make the power they want, and they make it alot quicker than a big laggy t-88.
    Know only because a friend of mine just made 900 whp on the bottle off of a t-78 and he's moving onto a TT setup now.
     
  9. liquid00meth

    liquid00meth Senior Member

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    "2 turbos is double da bling blang y0!"
     
  10. TommyTheCat

    TommyTheCat Gonzo Scientist

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  11. TommyTheCat

    TommyTheCat Gonzo Scientist

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    And I didn't mean bust=brake, I meant as in "vegas or bust" like the phrase....nevermind...i meant TT or nothing.
     
  12. BigJ

    BigJ I'm just about that action Boss. VIP

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    My buddy had a stock turbo transam and it was a single turbo, but he built it even more and yeah it was fucking a huge turbo, like the size of a semi's I belive. But yeah, extreme turbo lag=torque steer and yeah he hit a phone pole. RIP transam.
     
  13. YangpaNemsay

    YangpaNemsay Senior Member

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    Ouch! right into a phone poll...
     
  14. IDMaxGuy

    IDMaxGuy Senior Member

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    Twin turbo on V-motors is good cause two seperate manifolds, 1 manifold+2 turbos= too much turbo lag
    2manifolds+2 turbos=same turbo lag you get from 1 turbo on one manifold. make sense. 4 cylinders shouldnt be TT unless they are some small ass turbos, like the T03's from the old school DSM's, :lol: thats my $.02
     
  15. K2e2vin

    K2e2vin Senior Member

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    thats the reason for TT, less lag using smaller turbos. but you sacrifice a "hard" hit up top.
     
  16. dcsports413

    dcsports413 Senior Member

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    Correct me if im wrong, but the supra TT had sequential turbos.(small one to spool really fast, then bigger one for the main power). Yes, less lag, but wouldn't the bigger one "hit" pretty hard on top?
     
  17. K2e2vin

    K2e2vin Senior Member

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    yes supras have that but other TT cars, like skyline, have acutal "twin" turbos.

    i dont really know how it compares but I am guessing the sequential setup would cause the smaller turbo to spin slower or something b/c of the compressed air coming from larger turbo.
     
  18. E_SolSi

    E_SolSi Member of the 20 nut club Moderator VIP

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    :huh: ??????
    they arent connected at all

    there is a "door" that switches what turbo is getting the exhaust gas and providing the boost for whatever RPM/load/speed/whatever
    so the small turbo spools up very fast and provides boost at low RPMs then when more boost is needed for more power than the smaller turbo can provide the door switches and the larger turbo now takes over
    and there is usually something that pre loads the larger turbo before the switch so there is no secondary lag

    this twin turbo setup is very good
    but it takes up a lot of space.... so if you want a larger turbo chances are you cant get 2 of them in the space available so people swap to one
    and its heavy.... twice the turbos means more piping and all that shit so it is lighter to go with one larger turbo
     
  19. machine

    machine Banned

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    guy at school tried to do it on his Honda and it was way too much trouble for the crappy response he got.
     
  20. PROFILES2000

    PROFILES2000 Member

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    DRT in NYC did it and went 9's
     
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