95 Berlinetta weight reduction and modifications. | Page 15 | FerrariChat

95 Berlinetta weight reduction and modifications.

Discussion in '348/355' started by INTMD8, Mar 25, 2017.

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  1. INTMD8

    INTMD8 F1 Veteran Owner Silver Subscribed

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    Thanks! It feels awesome.

    This is the first time it broke traction on the dyno (in 5th gear). So first dyno run was a burnout and hooked up second run with heat in the tires.

    From a roll dropping it into second it breaks traction and throttle response is insane.

    I’ll get an in car driving video.
     
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  2. mclaudio

    mclaudio Formula 3

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    When the time comes for an engine refresh, I hope to consult you.
     
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  3. INTMD8

    INTMD8 F1 Veteran Owner Silver Subscribed

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    I try to post enough details so anyone interested could copy it but if there's anything I can do to help let me know :)

    At first I thought it would end up being a bit of a compromise but where it's at now is pretty much no low end loss and a lot of high rpm gain.

    Trying to decide if I should bring it to the dragstrip as it is or put a taller rear tire on it. As it is I might have to shift into 5th in the 1/4 which isn't ideal.
     
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  4. INTMD8

    INTMD8 F1 Veteran Owner Silver Subscribed

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    Never fun to post results of things that don't work out great but here it is.

    Last time at the dragstrip my car ran 12.45 at 116.83 at 3,150lbs with me in it and 340rwhp 250rwtq. 92.34mph at the 1/8th mile.

    To achieve this I launched it and slipped the clutch off the line at 7000+rpm.

    Now it's 2,980 with me in it and 390rwhp/268rwtq.

    First run tonight I heat the tires and think, I'll take it easy and slip the clutch out at 3500rpm. (it's a custom sprung hub disc with organic on one side and miba pucks on the other)

    Light drops, I slip it out and I'm trying to figure out if it's tire spin because I'm going nowhere. Grab second and it feels like I'm in neutral pedalling the throttle. Yep, just incinerated the clutch. I put in in 4th and for no good reason floor it and finish the pass. (it didn't slip the clutch in 4th starting at low rpm).

    So here's that time slip, embarrassing as hell and made me want to kill myself. Car 812 of course.

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  5. INTMD8

    INTMD8 F1 Veteran Owner Silver Subscribed

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    So I drive right back to staging to make another run with the thought I'll try even less rpm.

    Even launching at 2000rpm it initially slipped the clutch, I lifted throttle and rolled back into it in 1st and it felt good but shifting fast into 4th, blowing through the clutch again.

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  6. INTMD8

    INTMD8 F1 Veteran Owner Silver Subscribed

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    Had one more run after this that sucked so bad I threw out the timeslip. (I was next to a super loud drag car, lost concentration and missed a gear).

    At this point it's basically a total fail and I was about to head home but I thought, I'll try one more launching it literally right off idle.

    So here is a sad clutch drop at 1200 rpm and trying to be easy on the shifts so it doesn't continue to liquefy the clutch.

    1/8mph is down from previous run because of no rpm at launch and no idea if it could have done better mph wise as it was on the rev limiter I would guess for a second before the pass was completed.

    Overall sucks balls but I learned that I need to find a better solution for the clutch and it would benefit from better engine management if only for the reason of raising the rev limiter to 9000 or so.

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