F1 360 Creep in 1st gear - Please advise. | FerrariChat

F1 360 Creep in 1st gear - Please advise.

Discussion in 'Technical Q&A' started by robertpel9, Nov 22, 2016.

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  1. robertpel9

    robertpel9 Formula Junior
    Silver Subscribed

    Feb 28, 2004
    492
    Orange County CA
    Full Name:
    Robert
    About 1500 miles ago I had a new clutch installed in my 360 along with the latest TCU used in the 2004 models (I have a 99)so that my mechanic could adjust the PIS, etc

    Anyway car functions fantastically. Leaving from a stop never goes above 1600 rpm's and is smooth as silk. All shifts are seamless and its night and day vs the 99 TCU and old clutch.

    I have noticed under certain circumstances if i leave it in 1st while stopped I feel a little vibration and if i take my foot off the brake the vibration leaves but the car will creep forward just a tad. Nothing extreme but a very slow creep. This is only under certain exterior terms as well as if the car is heated up fully or not. Otherwise it will not creep.

    I always have since buying the car shifted to Neutral under any stopping condition. I realize the creep means the clutch is dragging a tad which is not good but i fi am always in neutral at stop does it matter and is the creep offset by the other benefits of the car performance. I have driven a lot of 360 F1's and none have been even near as smooth at launch and seamlessly shifting as this one.

    My question is given how minimal it is and that it is not even existent under many circumstances, coupled with the fact that I ALWAYS shift to neutral when stopped, should I still have the PIS bumped up a little bit and completely eliminate the drag, or am i better off being happy with how silky smooth everything is and the perfect takeoffs = little wear, etc. It's free and simple to bump the PIS, just want to make sure I ma not doing more harm than good.

    Very interested in this - any info anyone has on this, please let me know.

    Robert
     
  2. robertpel9

    robertpel9 Formula Junior
    Silver Subscribed

    Feb 28, 2004
    492
    Orange County CA
    Full Name:
    Robert
    Thanks for the feedback. I stopped by RMT today here in SoCal who performs all of the service on my cars. Heres the scoop for what its worth

    -I have a 99 with the TCU used in 2004
    -Clutch and TCU were replaced ~2600 miles ago
    -PIS was set to 4.3 and the car took off silky smooth, etc. There would be some creep when Stopped in 1st gear under certain conditions
    -Hooked up car today. Clutch wear is only 2% after 2600 miles. Clutch Thickness still at 15.1 and everything looked good under diagnostics.
    -Bumped up PIS a notch to 4.4 and there is Zero creep hot or cold now and takeoff is still seamless and smooth occuring when warm around 1500 RPMs and when cold around 1900

    Looks like things are all set. Honestly with the clutch wear at only 2% i was tempted to leave it alone but Randy said it could be placing stress on the synchros, etc and wanted to bum it up just a touch. Now everything is still very smooth and no creep

    Thanks for the help. For those of you with early 360's upgrading the TCU is a no brainer. It easily extends clutch life just as a result of being able to manipulate variables such as stated about and it will pay for itself very quickly

    Let me know if anyone has any questions or feedback - Looking forward to some lunchtime canyon carving
     

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