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turbo vs V8

Discussion in 'General' started by commod8, May 27, 2006.

  1. commod8

    commod8 swim wit da fishes

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    not really relating to commodores people...i just want to know the exact technical reasons why a 4 or 6 cylinder turbocharged car can pound a v8 on take off. i know weight and torque and other stuff have something to do with it, but i want to hear the real reason why. i've heard about torque and power distribution but i'm not exactly clear on it. i wanna know why there is more torque at this point and what causes this and that....i know i'm a pain, but i just really want to know in as much detail as possible why this is so. i would really appreciate the help people. :)
     
  2. mattman

    mattman New Member

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    blowers generally have more torque than a v8.... torque is pulling power... or low down power. The more of this the better as it's what gets you off the line.

    A v8 will usually have more top end than a turbo or s/c though (unless it's been modded off its tits) and will catch up once you get moving along.
     
  3. commod8

    commod8 swim wit da fishes

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    thanx mattman, unbelievably quick reply mate! what causes the turbo cars to have more torque though, is there an explainable reason? my mate says that turbocharged cars don't have as much power to transfer to the diff - sounds like he's implying that the less power you have, the quicker you'll go!?!? so yeah, why do they have more torque than v8's?
     
  4. burnz

    burnz dah dut dut da dah

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    it all comes down to ve(volumetric efficency
    a 2ltr turbo is physicly 2ltr but ve wise it's cc is increased 3+ltr
    depending on boost
     
  5. minux

    minux Infidel Bear

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    The turbo has the same effect on all engine's, the guy's using GenT 1000's on the LS1 are getting torque ranges in the vicinity of 1300nm. Which is damned impressive. Now that turboes are becoming an in thing on V8 setup's(moreso LS1's/LS2's) these 6 cylinder nissans arent seeming so impressive.
     
  6. rb26dett

    rb26dett New Member

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    My car is turbo, and there is no way I can pound a V8 on take off.
     
  7. angelo.vs

    angelo.vs Autobot

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    I thought it was the other way around (V8s getting a good start). Turbos Im sure are alot better during a rolling start compared to a standing start. Im talking about 4s by the way. 6s' would match V8s with acceleration because its a bigger capacity engine. Forced 8s though are a different story.....

    Also I dont think torque only applies to the lower rev range. Obviously the torque distribution relies on the engine and its set up.
     
  8. minux

    minux Infidel Bear

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    Even 4's are slow off the line with a turbo, i had no problem munching rex's that had a fair wad of cash spent on them, the funny thing was by the time they caught me, i'd already finished the 1/4
     
  9. commod8

    commod8 swim wit da fishes

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    well my cousin has a Lancer Evolution VIII (turbo 4cyl) and he's beaten mildly worked 5 litres. A 2.0L Lancer with a turbo can beat a 5.0L V8. is it simply because the Lancer weighs a lot less, and the turbo gives it so much extra oomph, the Lancer easily beats the V8's?
     
  10. vlv8vic

    vlv8vic <---Brad Quaid = internet stalker

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    V8s generally have more torque. i kow VLs better than others so my example there is that a stock 5ltr VL has more torque than a turbo version. less rwkw though.
    but hey, whats kilowatts when its torque that moves a car!
     
  11. commod8

    commod8 swim wit da fishes

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    so is there an explanation for the reason behind the 5.0L VL having more torque but less rwkw?
     
  12. vlv8vic

    vlv8vic <---Brad Quaid = internet stalker

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    i dont get what you mean, torque isnt really relative to kilowatts, so its hard to understand what you are asking.
     
  13. commod8

    commod8 swim wit da fishes

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    sorry mate. why does a 5.0L have more power at the flywheel, but less at the rear wheels? is there a reason?
     
  14. Boonz

    Boonz Donating Member

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    because the driveline is so long it loses a certain amount of power being driven to the wheels
     
  15. Garth

    Garth Your guess is as good as mine...... Staff Member

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    v8's have better puling power
    a 6 cycle (straight type turbo or a 4 cycle) wont have torque down lower
    the v8 will redline to 6000rpm for example
    the 4 cycle will redline at 8000rpm
    the 4 cycle will weight less than the v8,
    and the list can go on

    a good way to put it, is if you had a huge bar, huge metal pipe or something, and you put it on yoru wheel nut, and you let it idle normaly, put it in gear, and you grab the metal bar, the amount of force you apply on the metal bar to prevent the car from moving is called toqure, it's the force required to move something, aka energy.

    v8's generaly have bigger pistions than a 4 cycle, hence the bigger redline mark, the direct result of bigger pistions is more kw and more torque

    a v8 in theory will be beaten of the line by a turbo, but a v8 will catch a turbo given the right lenght of road, it's all about power distribution, the higher the revs on a v8 the lease amount of torque and more amount of kw. where a turbo is the other way around.
     
  16. minux

    minux Infidel Bear

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    I'd love to race your cousin in his buzzbox, goddamn pieces of **** lancer's....
     
  17. VLDavo

    VLDavo New Member

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    mmm the main reason the buzz boxes beat me off the lights is becasue i cant seem to get traction off the start.....but as soon as i do they aint got a chance to catch me in the vn
     
  18. angelo.vs

    angelo.vs Autobot

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    Ive been in an EVO 7 or 8 and my dad had a VT SS Gen 3. Ive got to say stock vs stock the EVO goes alot harder. Dads car was an auto and the EVO a manual and fresh of the showroom.
     
  19. minux

    minux Infidel Bear

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    WHo says anything about stock? :)

    Just one thing, tell your Dad to have his car tuned, it will then munch the lancer.
     
  20. GLD-086

    GLD-086 New Member

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    True, but stock for stock, the VLT is quicker then the 8.

    Wasnt the 8 quoted at 16 seconds or something?

    Hell I was told that a N/A 5 Speed would give the 5Ltr a run, for it's money.
     

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