How much toe are you running in your F40? | FerrariChat
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How much toe are you running in your F40?

Discussion in '288GTO/F40/F50/Enzo/LaFerrari/F80' started by reflex, Nov 30, 2004.

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  1. reflex

    reflex Karting

    Nov 11, 2003
    173
    Brighton U.K
    #1 reflex, Nov 30, 2004
    I am interested to here what other F40 owners prefer.

    I have yet to check mine, but it feels like its only got about 1-1.5mm.

    For the sake of slightly slower turn in I'd perfer more toe in to stabilise the car at speed. perhaps nearer the upper limit of 2.5mm.
     
  2. ferrarifixer

    ferrarifixer F1 Veteran
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    Jul 22, 2003
    8,520
    Melbourne
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    Phil Hughes
    #2 ferrarifixer, Dec 2, 2004
    It'll feel nicer with around your estimate of 1-1.5 than it will at 2.5mm.

    At 2.5 toe in on the front, it will be very pointy, and it'll wear the outer edges of the tyres prematurely.

    Pressures and condition are CRITICAL on F40 (and most low profile tyred, stiffly sprung cars). If the tyres are more than a few years old, change them.

    Check the postion of your inner wishbone pick ups too. You have a choice (two sets of bolt holes) depending on ride height and geometry requirements.
     
  3. reflex

    reflex Karting

    Nov 11, 2003
    173
    Brighton U.K
    #3 reflex, Dec 2, 2004
    My F40 is set on its lowest setting for suspension. i.e the upper holes.

    I like the set up. Got a track day coming up, it'll be the first time i've used it on a track.

    Thanks for the info.
     
  4. ferrarifixer

    ferrarifixer F1 Veteran
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    Jul 22, 2003
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    #4 ferrarifixer, Dec 2, 2004
    Ok, to avoid wasting your track day. DOUBLE check the date code on all 4 tyres. Change them as said if old, ESPECIALLY of going on a fast track.

    Also, change your brake fluid to a race type, Castrol SRF is best. Do it. Fresh road fluid WILL let you down.

    Also, check brake pads. You'll need at least 10mm of material (+back plate), to get good results. Any less and you risk loss of performance.

    F40 has an unfair reputation of disappointing track day use. It's nearly always down to lack of proper preparation.
     
  5. reflex

    reflex Karting

    Nov 11, 2003
    173
    Brighton U.K
    #5 reflex, Dec 2, 2004
    I had the discs replaced with Alcon cross drilled and Carbotech pads and fresh SRF fluid. Bedding them in.

    Tyres are only 1 year old, but I will treat them prior to track day.

    Oil is new, Shell Helix.

    Cam belt changed this year too.

    I have only had the car for a couple of weeks.

    I'll also be running 100 octane fuel.
     
  6. 410SA

    410SA F1 Veteran

    Nov 2, 2003
    8,511
    West Coast
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    A
    #6 410SA, Dec 2, 2004
    Is there any quantifiable benefit to running racing fuel in an F40? Doesn't the engine management system deal with octane issues, especially as the cars are supplied from the factory to run on normal road fuels?
     
  7. reflex

    reflex Karting

    Nov 11, 2003
    173
    Brighton U.K
    #7 reflex, Dec 2, 2004
    There are numerous advantages using higher octane fuel.

    I use ordinary Shell Optimax - Octane 98, for road use.

    The higher the octane rating the better. I don't know if the F40 has knock sensors, if it does it can advance the ignition automatically and take advantage of the slower burning fuel. Even if the F40 does not have knock sensors there are other advantages.

    For instance higher octane fuels burn at a lower temps and there is less chance of pre-ignition.

    Most racing fuels also have added oxygen additives which will also provide more power.

    I would suggest buying a 100 litres of pure race fuel. Something Sunoco FR which has an octane of 102 and has 3.7% oxygen added. Try this on an empty tank and you'll feel an immediate benefit.

    You can blend the fuel with ordinary pump gas for the road or track which is what I do for the track.
     
  8. Frozenguy

    Frozenguy Formula Junior

    Oct 12, 2004
    339
    Bay Area, Califronia
    Full Name:
    Peter
    #8 Frozenguy, Dec 2, 2004
    you wont so much notice the differnce by just putting in the race fuel.. the octane number (correct me if i'm wrong) is the rating at which the fuel resists combustion.. so it allows you to run more boost because of the higher resistance combustion so you wont experience detonation. it also burns cooler as said which will lower egts.. i also hear it gives better gas mileage? but hell, if your racing, i'm sure your burning gas like crazy.. 100 octane is good..nothing higher really.. you dont want to go too high either..there is a good octane rating for each cars config.. dyno it on road fuel and race fuel so you can switch between the two..you will get best performance..thats what i've done with my 300zx.. sure there is a way to do it on the f40..
     

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