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Thread: Turbo Upgrade?????

  1. #16
    Member Since
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    Quote Originally Posted by WormGod
    I hate to say it, but our 3.5 V6 with it's body weight utilizing a turbo isnt worth the money. The boost lag involved with the turbo spooling up is going to be extended before you actually feel any power unless you decide to do some MAJOR modding. To get it to work right with the VX, you are looking at trully customising the vehicle. Lighter panels and whatever else you can throw out, complete header/turboback exhaust system (catless), complete street tune (our computer is not very friendly with custom tunes since it thinks on its own rather well), complete cooling and induction system, and fuel system upgrade. Thus, why the wealthier than God JDM owner was able to complete such a task and he eventually put it up for sale. Doesnt say much about his creation, heh.

    The S/C is a much better choice for the instant power at your command at a reasonable price.

    The only reason you see turbos on large trucks is because they are pushing diesel and/or a V8 or larger, and then they are still only powerful, not necessarily quick. Ah, the scary sound of a V10 turbo diesel though.
    uh.....3000gt come stock turbo and weights around 3600-3800lbs. the supra weights in at around 3600lbs and its one of the most well known jdm turbo cars around.

    turbo lag has nothing to do with weight. its displacement and how fast u can spin ur turbos. if a honda b18 can push a t3/t4 with almost no lag. a 3.5L will be able to do the same, if not better.

    whatever modifications it takes for a supercharger to run will also be required for the turbo. both systems r basically the same. theyre both pushing air into the engine. so if u need injectors and fuel system for a turbo ull need tat for sc. same thing for cooling. but u will need custom manifolds and custom exhaust, at the least. u might also need a IC.

  2. #17
    Read this book:


    It'll answer all your questions!
    VX : CLOSEST THING TO A CONCEPT CAR!

  3. #18
    Member Since
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    2001, Proton Yellow, VX, 1379 (sold)
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    Quote Originally Posted by CostieCosta
    i have always wondered. is it possible you can put a turbo and supercharge in the same vehical? Cuz i have never seen any vehical with both on, just wondering if it's possible.
    Yes, it has been done, mostly for show, but VW had other ideas...
    Gregg
    2001 Proton Yellow #1379

  4. #19
    Quote Originally Posted by Cobrajet
    Yes, it has been done, mostly for show, but VW had other ideas...
    I guess you forgot about the lancia delta s4 deriving 470 hp from a 1759 cc 4 cilinder engine using super and turbo charger!
    Deffinitely no show but all go!
    After the death of toivonen these group B rallycars were banned!

  5. #20
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    i want 1, . I wish.

    Whats the Point of Living, if You don't go BIG.....
    Turning My VX Into Rally VX

  6. #21
    Member Since
    Jun 2002
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    2001 Ebony S/C #1304
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    I wrote a lengthy response last night but then the site went down and wouldnt let me post it, heh.... lemme see if I can sum it up....

    MZ, a couple of corrections. Turbo lag was a MT. I meant the boost. Perhaps because my Rex is suffering from it pretty bad lately it is the first word that comes to mind, heh. And as for body weight, I mean high stance. Higher sitting vehicles that produce more uneven down-force during body roll (will get to these later).

    Ok, let me try to explain the gist of what I was saying before. In a nutshell, the cost of the modifications and the amount of work negate the positive earnings from a VX with a turbocharged system. It can be done, but if it is, it needs to be done RIGHT and with a fat wallet. Simply slapping a VF22 into a VX with a custom FMIC is not going to do the trick.

    The high sitting body weight raises the question simply because of a SWRT tech demo I own that shows many of the trial and errors of Petter Solberg's garage. They had issues with wearing too hard on the tranny and computers sensors localised the most wear coming at the point of body roll, WHILE the turbo was spooling. Stiffening the suspension and lowering the car 1/2" yielded less wear, but over time it was still an issue. They ended up having to redesign their transmission package and getting it approved by the WRC. In the case of the VX, we sit MUCH higher than a WRC vehicle and we will produce much more body roll, let alone a stock, non-race conformed tranny. Physics takes on a more dramatic role in our case. Because cars like the STi (and the ones mentioned in the post above) are essentially designed for use with a turbo, there is less of a chance of collateral damage to other components than with the VX. To be honest, our tranny scares me a bit and I never have had much faith in it. Call me paranoid.

    In the end, it comes down to, the VX never shipped factory with a S/C or a T/C. Theres the question of, was one ever tested in design with either unit. Probably not, but who knows really. Adding one of either now creates a list of chances we take using them, but in my opinion, I think the turbo is the worse of the 2 given the additional modifications and money that needs to be invested.

    I would like to see a USDM done up with a T/C, but it wont be mine, heh. Someone hand me a VX and $20k and I would be glad to build it.
    Gary Noonan
    '01 S/C VX / '18 Forester XT

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