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

Can a Turbo'd car run without a DV

Discussion in 'Tuning' started by Charlies604, Mar 15, 2006.

  1. Charlies604
    Offline

    Charlies604 Member

    Joined:
    Jul 30, 2005
    Messages:
    203
    Likes Received:
    0
    [Mar 15, 2006]
    Ok.. so im doing engineering. I feel I should know this but i may be being stooooppid.

    If u have a Turbo do you have to a a dump/diverter valve?

    As far as I am aware YES. but sum1 told me otherwise today.

    Unless you drive a big rally car with anti lag etc etc....

    Cheers for the help!
    #1
  2. Ads

    Ads

    [Sep 24, 2014]

  3. dummi
    Offline

    dummi smoking a6

    Joined:
    Mar 25, 2004
    Messages:
    1,210
    Likes Received:
    0
    [Mar 15, 2006]
    dump or diverter valve is there to send the excess air pumped by your turbos somewhere else that is vented into the air or diverted back to the inlet, prevents backed up air working against the turbo , maybe he's thinking of superchargers or those naff electric superchargers on ebay

    yes you should know that lol jk you doing mech eng?
    #2
  4. Charlies604
    Offline

    Charlies604 Member

    Joined:
    Jul 30, 2005
    Messages:
    203
    Likes Received:
    0
    [Mar 15, 2006]
    Well this is what i always always thought. You need to vent the gas otherwise you get compressor stall.

    Yeah doing mechanical and composites. Dont no how much longer ill stay tho. I seem t be learning to shuffle paper!
    Its very dull and i dont really know what i want to do in life hehe!
    #3
  5. JayB5UK
    Offline

    JayB5UK Member

    Joined:
    Jan 13, 2006
    Messages:
    470
    Likes Received:
    0
    [Mar 15, 2006]
    They don't have to and didn't until around the early 90's.

    You don't think stuff like the MG Metro turbo was that advanced - still running a dodgy SU carb set up?! LOL

    Things like Saabs started having the Bosch DV's in the 90's and this is around the time people like Power Engineering & Bailey Motorsport started putting them on RS Turbo's and Cosworths.

    Ah, the days of "real" turbo cars with $hit loads of lag! Another world compared to our 20V turbos! /ubbthreads/images/graemlins/beerchug.gif
    #4
  6. Charlies604
    Offline

    Charlies604 Member

    Joined:
    Jul 30, 2005
    Messages:
    203
    Likes Received:
    0
    [Mar 16, 2006]
    SO what did they do with waste inlet gas? Did they just let it stall and that gave it the lag?

    Surely sumthin like a 200sx would have them standard. thats where the discusion started!
    #5
  7. Ess_Three
    Offline

    Ess_Three Active Member

    Joined:
    Feb 19, 2001
    Messages:
    5,383
    Likes Received:
    6
    [Mar 16, 2006]
    [ QUOTE ]
    SO what did they do with waste inlet gas? Did they just let it stall and that gave it the lag?


    [/ QUOTE ]

    That's exactly what they did...

    Hence the lag was more as you have to get the compressor spinning up to speed again before it starts making boost.


    [ QUOTE ]

    Surely sumthin like a 200sx would have them standard. thats where the discusion started!

    [/ QUOTE ]

    Probably...not sure.
    #6
  8. Ryanc
    Offline

    Ryanc Active Member

    Joined:
    Feb 15, 2004
    Messages:
    1,321
    Likes Received:
    0
    [Mar 16, 2006]
    200sx does have a dv standard.
    #7
  9. dummi
    Offline

    dummi smoking a6

    Joined:
    Mar 25, 2004
    Messages:
    1,210
    Likes Received:
    0
    [Mar 16, 2006]
    [ QUOTE ]
    [ QUOTE ]
    SO what did they do with waste inlet gas? Did they just let it stall and that gave it the lag?


    [/ QUOTE ]

    That's exactly what they did...

    Hence the lag was more as you have to get the compressor spinning up to speed again before it starts making boost.


    [ QUOTE ]



    [/ QUOTE ]

    so did that lead to regular failures of turbo's?? i'm suprised i'd of thought they'd atleast have some sort of waste gate on the compressor -> inlet manifold
    #8
  10. JayB5UK
    Offline

    JayB5UK Member

    Joined:
    Jan 13, 2006
    Messages:
    470
    Likes Received:
    0
    [Mar 16, 2006]
    Dunno, I hasd a 200SX S13, can't remember if it had a DV standard, didn't really do a lot to it, didn't have it very long.

    Yeah the lag I was on about was what we put up with. I went through a few turbo's on my S1 RS turbo, and noe on my S2 - which had a Bailey DV noteably.

    Obviously they had wastegates but nothing to stop them from stalling.
    #9
  11. imported_bubstar
    Online

    imported_bubstar Guest

    [Mar 16, 2006]
    [ QUOTE ]
    SO what did they do with waste inlet gas? Did they just let it stall and that gave it the lag?


    [/ QUOTE ]

    Yep - As said before, that's what happened more or less.

    The Renault 5 GT Turbo never had a DV either.

    BUB
    #10
  12. JayB5UK
    Offline

    JayB5UK Member

    Joined:
    Jan 13, 2006
    Messages:
    470
    Likes Received:
    0
    [Mar 17, 2006]
    Oh god, the 5 turbo, bloody good fun, but i'd never have owned one!

    Just add a bleed valve and stand back waiting to catch those engine parts! LOL
    #11
  13. imported_bubstar
    Online

    imported_bubstar Guest

    [Mar 17, 2006]
    [ QUOTE ]
    Oh god, the 5 turbo, bloody good fun, but i'd never have owned one!

    Just add a bleed valve and stand back waiting to catch those engine parts! LOL

    [/ QUOTE ]

    Indeed!!! /ubbthreads/images/graemlins/grin.gif

    BUB /ubbthreads/images/graemlins/laugh_roll.gif /ubbthreads/images/graemlins/lol.gif /ubbthreads/images/graemlins/laugh_roll.gif
    #12

Share This Page