shouldnt need turbos to get 800hp

Discussion in '2000 Hennessey Viper Venom 800TT' started by joeblowlovescars, Jan 29, 2003.

  1. taht really sucks. its got an eight litre engine it should have that much wihtout turbos
     
  2. Re: shouldnt need turbos to get 800hp

    Do you know of any stock, warranted, street-legal production cars of around 8.0 liters making 800 hp, normally aspirated?

    Which ones? And how much do they cost?
     
  3. Re: shouldnt need turbos to get 800hp

    2000 TVR speed 12 (v12, 8 liters 800hp N/A)
    And i think the point is that, there are tons of cars that can get 90+ hp/liter (lamborhginis, ferraris, porsches with N/A engines)
    But also the TNT viper can get 91hp/liter (520ci), and this viper has a stock 488 in it (stock below the heads, and turbos at 6psi, with a 150hp increase from the N/A 650R)
     
  4. Re: shouldnt need turbos to get 800hp

    its 7.7 liters the speed 12, not 8
     
  5. Re: shouldnt need turbos to get 800hp
     
  6. Re: shouldnt need turbos to get 800hp

    yah many Naturaly Asparated motors can get up to 800 pony's i just dont know why this 1 cant
     
  7. Re: shouldnt need turbos to get 800hp

    Ah, yes. The one-off TVR Speed 12. For which the hp claims have never been proven. And are pretty unlikely, considering their Cerbera 4.5's averaged about 70 hp *less* than the factory claim. This, according to owners who dyno-tested their cars. Speed 12 OBD-II compliant? Not a chance in hell. TVR won't build you one, even if you had the money (two members of the band The Prodigy reportedly put down deposits at the car's unveiling years ago; neither have taken deliver; TVR was selling its demo car, the only one known in existence, but only to racing teams). The "sticker price" on the Speed 12 was listed at 160,000 British pounds. That's $264,00 USD at today's exchange rates. Which brings up the next point(s):
    True, Lamborghinis and Ferraris and Porsches can get 90+ hp/liter with N/A engines. But
    1) Those engines aren't anywhere near 8.0-8.3 liters (remember, the larger your engine is, the harder it is to maintain high specific outputs, all things being equal)
    2) Those cars cost quite a bit more than the Viper.
     
  8. Re: shouldnt need turbos to get 800hp

    yeah, the tvr speed 12 was the only stock car i could think of

    but what i'm saying is, the dodge viper has the highest liter engine in the world (last time i checked) so there aren't going to be any engines like it, so the size of engines doesn't matter, this thread is "Re: shouldnt need turbos to get 800hp"
    which, if it had the same hp/liter ratio like ferraris, lamborhginis and all, could get that number N/A, the closest hennessey is the 650R, and the only viper i can think of that gets a close ratio is the TNT at 91hp/liter (so, if the 800tt was tuned properly, could get 800hp N/A) <A BORDER="0" HREF="http://www.supercars.net/emoticons.html"><IMG BORDER="0" SRC="http://speed.supercars.net/cboardhtml/emoticons/smile.gif"></A>
     
  9. Re: shouldnt need turbos to get 800hp

    but the car sounds a hell of alot betta with the TT at the end of it...
    like whats a Viper Venom 800...see sounds gay with out the TT...
    but the SVS Stryker Viper still sounds cool with out it...
    but its toped the 1000hp...so it needs the TT!
     
  10. Re: shouldnt need turbos to get 800hp

    i bet the turbos arent even at max psi it could go further
     
  11. Re: shouldnt need turbos to get 800hp

    The turbos run at a mild 6psi, so yeah they could go further.
     
  12. Re: shouldnt need turbos to get 800hp

    tvr speed 12
     
  13. Re: shouldnt need turbos to get 800hp

    Read Guibo's other post under that one. The Speed 12 was never a true production car.
     
  14. Re: shouldnt need turbos to get 800hp

    Do they keep it that low for safety or something? Because thet should raise the psi on this and the 1000TT.
     
  15. Re: shouldnt need turbos to get 800hp

    Do they keep it that low for safety or something? Because thet should raise the psi on this and the 1000TT.
     
  16. Re: shouldnt need turbos to get 800hp

    The 800tt was the first Venom to see turbos, and my guess is that reliability is the reason for the low boost settings. I imagine Hennessey will keep upping the boost once he feels he can do it reliably (that is, if he can stay out of prison long enough <A BORDER="0" HREF="http://www.supercars.net/emoticons.html"><IMG BORDER="0" SRC="http://speed.supercars.net/cboardhtml/emoticons/sad.gif"></A> )
     
  17. Re: shouldnt need turbos to get 800hp

    how hard can it b...to stay out of prison that is...?
     
  18. Re: shouldnt need turbos to get 800hp

    Actually, venom vipers come with 3yr/36k warranties, so reliability isn't the issue. the venom 650R was modded heavily to 515ci and breathed heavily with ported heads, so hennessey went to turbos because he couldn't mod an N/A engine anymore than the 650, and it only took 6psi to achieve 833hp. <A BORDER="0" HREF="http://www.supercars.net/emoticons.html"><IMG BORDER="0" SRC="http://speed.supercars.net/cboardhtml/emoticons/smile.gif"></A>
     
  19. Re: shouldnt need turbos to get 800hp

    That's not what I meant. I simply meant Hennessey probably didn't want to just turn the boost up right away. Increasing the boost slowly is always a surer method for reliabilty.
     
  20. Re: shouldnt need turbos to get 800hp

    "And over here we have George W. Bush: Compassionate Conservative. I'm not quite sure what that is, but it sounds like a Volvo with a gun rack"

    i could do with 1 of them!
     
  21. Re:

    this car would easily make over 800 hp if they got rid of the pushrods and made it a double overhead cam engine and made the timing VVT but it would jack the price up much lihe TVR's and lambos and ferraris and it would also loose the awsome low end torque the viper has (like with all pushrod motors)
     
  22. Re: shouldnt need turbos to get 800hp

    Normally aspirated cars get MOST of their power from COMPRESSION. For example, my uncle's Chevelle dragster with a 427 Chevy BB had somewhere around 400 horsepower before he changed the compression ratio. He changed it to 13:1, which is up from somewhere around 9, maybe 10.5. Now he has about 650 horsepower, as opposed to 400, and, by the way, it is MUCH louder, too. I got a ride in it. Even though we never got over 20 mph, the sound of the engine and the burning out tires was enough to feel like we were going much faster. He did two powerslides and then burnt out onto his trailer. And that, by the way, was right after he received a 2nd place trophy in the Valley of Flowers (in St.Louis) car show.
     
  23. Re: Re:

    i think this Newbie knows what he's talkin' about!
     
  24. Re: Re:

    well, OHC engines make most of thier power at high RPM's, pushrods at low rpm's, thus with the enigine this car has (ohv) it can get better acceleration then an ohc engine (come on 2.4sec to 60)
     
  25. Re: Re:

    that 2.4 sec run was launghed at 5500 rpm which yes is still low end it is high end for the viper because it does not rev high but compared to 9000RPM and 1400RPM ferraris and imports it is still low end and yes low end give u better off like accleration


    and for the guy that said somin about compression forget it with requlations these days the only way to get comp up is by increasing air pressure so u have to get a supercharger or turbo
     

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