Anyone still autocross their SVT? - Page 5
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  1. #61
    [FJ] Specialist G-forces's Avatar
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    Default Re: Anyone still autocross their SVT?

    You've gotten odd and wrong advice for rear tire pressure. The way you currently run is best for helping over-steer (pressure biased to 4-6psi higher in fronts), while maintaining good handling characteristics.

    You would have to pump the rears up until they were hard and ineffective to help over-steer by increasing pressure, and then the car would handle poorly and even dangerously in high leverage evasive maneuvers and/or high speed cornering. Who told you that, your competition? I think the people who told you to pump the rears higher than the fronts want to see you do worse than you currently do.

    Running a tiny bit more toe-out up front will help with tire wear on the outside (and help rotation, so test accordingly). Of course, lowering the car with stiffer springs, until the FLCAs are just short of ground-level will increase front negative camber as much as possible for cornering.

    Keep doing what you're doing, it sounds like you are on the right track (pun intended).
    Getaway in Stockholm 2: Escort Cosworth vs Supra... adults-only driving on YouTube.
    2002 Gold SE (Ghia) Focus, heavily modified... killed by a terrible driver
    2004 Silver SVTF w/EAP, #800... sold, to become a track star

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  3. #62
    TEAM Member SVT5D's Avatar
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    Default Re: Anyone still autocross their SVT?

    I think they were being honest, just talking about totally different fwd cars. I've heard it again and again from different national level drivers who have no motivation to mislead me. The highest so far was 62psi, yes sixty-two, in a Celica. I've also heard that the Focus/Fiesta/Mazda3/C30 just don't have that issue because of their rear suspension design.

    As a beginner and non-engineer, I don't really get the logic. It seems like drastically reducing your grip to help induce rotation would be slower, and tire pressures would best be used as a quick fine tuning tool between runs.

    G-forces, I did go with your alignment recommendation. It does seem sharper on the track, but made the steering much heavier on the street. Is that to be expected?

  4. #63
    [FJ] Specialist G-forces's Avatar
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    Default Re: Anyone still autocross their SVT?

    How much toe-out did you add to the front, and how much toe-in do you have in the rear? What are your specs?
    Getaway in Stockholm 2: Escort Cosworth vs Supra... adults-only driving on YouTube.
    2002 Gold SE (Ghia) Focus, heavily modified... killed by a terrible driver
    2004 Silver SVTF w/EAP, #800... sold, to become a track star

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  6. #64
    TEAM Member svtcanuck's Avatar
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    Default Re: Anyone still autocross their SVT?

    Anyone still autocross their SVT?

    Hell yes. I've done it in all 3 of mv SVTs. First one I did at least 30 events. 2nd one only got to 3 events. 3rd one is about to do its 3rd event.

    Best result was when I paxed in the top 10 once. I'm hoping to do that again.

  7. #65
    TEAM Member SVT5D's Avatar
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    Default Re: Anyone still autocross their SVT?

    Quote Originally Posted by G-forces View Post
    How much toe-out did you add to the front, and how much toe-in do you have in the rear? What are your specs?
    I had them set 1/16 out in the front, which i think worked out to like .15 degrees. The rear was set at zero. It feels more planted in corners, but on the street its kind of dead on center now and the steering effort ramps up really quickly.

  8. #66
    TEAM Member SVT5D's Avatar
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    Default Re: Anyone still autocross their SVT?

    Quote Originally Posted by svtcanuck View Post
    Anyone still autocross their SVT?

    Hell yes. I've done it in all 3 of mv SVTs. First one I did at least 30 events. 2nd one only got to 3 events. 3rd one is about to do its 3rd event.

    Best result was when I paxed in the top 10 once. I'm hoping to do that again.
    Whats your class and current set up?

  9. #67
    [FJ] Specialist G-forces's Avatar
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    Default Re: Anyone still autocross their SVT?

    Quote Originally Posted by SVT5D View Post
    I had them set 1/16 out in the front, which i think worked out to like .15 degrees. The rear was set at zero. It feels more planted in corners, but on the street its kind of dead on center now and the steering effort ramps up really quickly.
    Glad you like it! Your at the limit up front for street drivability, anything more and you'd constantly have to correct, while the car "hunts" across the lane... not to mention the extra steering effort under any kind of braking. I'm a bit surprised that the car doesn't twitch a bit right now with no rear toe-in to accompany the front toe-out. To answer, yes that's normal... toe-out increases under braking (front dive), and toe-in increases under acceleration (front lift).

    Stiffer springs and camber adjustment option would allow you to play with toe-out a bit more... maybe you could use less and get similar results. But if you are winning as-is, there is no reason to spend money on experiments.
    Getaway in Stockholm 2: Escort Cosworth vs Supra... adults-only driving on YouTube.
    2002 Gold SE (Ghia) Focus, heavily modified... killed by a terrible driver
    2004 Silver SVTF w/EAP, #800... sold, to become a track star

  10. #68
    TEAM Member svtcanuck's Avatar
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    Default Re: Anyone still autocross their SVT?

    Quote Originally Posted by SVT5D View Post
    Whats your class and current set up?
    This car is FSP due to its larger throttle body. All other mods (F&R strut tower bars, H&R sport springs, H&R rear sway bar, cat back exhaust, tune) are STF legal. I run conti dw in the wet and I just did my first event with re71r in the dry.


 
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