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Thread: OS Giken GT1CD clutch wear

  1. #1
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    OS Giken GT1CD clutch wear

    Hey gents

    Myself and two friends have been running OS Giken GT1CD in low powered Nissans. There seems to be zero reviews on these or feedback on durability.

    The clutch kit is rated to 315kw at the engine.

    My car (200-220kw), have street driven for 20,000km. Grocery getter type km's, less than 20 clutch kicks. If drifting, clutch will slip after the 4th or 5th kick, but will handle highway pulls the next day fine. Assuming its just getting hot? Thrash sessions were on 3 year old china 205/55/16, so would have expected it to turn tyres before slipping clutch.

    car 2: just got tuned on 240kw after running stock tune for a short period of time. Clutch slipping on first track day after any clutch kicks, so hasn't had a proper hard time.

    car 3: stock powered SR20, has done street and track days, no clutch problems, has killed motor though..

    Pics attached are from car #2: 240kw RB20 (has a GTX3071 on low boost, so makes no torque and very brief power band. Shit suspension/wheel setup so has no mechanical grip)

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    Obviously it has gotten hot (pressure plate). Assuming that it and/or the flywheel are warped for it to wear only the inside of the clutch disc?

    I haven't pulled my car apart to check the condition of mine yet, as I dont have the money to replace it with anything. Just wondering if anyone has had experience with these clutches? Bad or unsuitable clutch? or just user error? Just seems alarming to have 2/3 cars with clutch failure, despite much less than the rated power. Clutch has been otherwise fantastic to drive with.

  2. #2
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    I think the clutch has been abused personally. Brass probably would be what you want for that sort of treatment.
    Quote Originally Posted by Lord_fahrquhar View Post
    The au put the fucking tunnel in with the bullbar. Even Chuck Norris respects the ability of the au coon.

  3. #3
    Non Compos Mentos Gammaboy's Avatar
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    Looks like it's been slipped a lot just being driven around. Looks much like what happened to the brass button unit I had in my XY for a while.
    "Where can we get hold of a Vincent Black Shadow?" "Whats that?" "A fantastic bike," I said. "The new model is something like two thousand cubic inches, developing two hundred brake-horsepower at four thousand revolutions per minute on a magnesium frame with two styrofoam seats and a total curb weight of exactly two hundred pounds."

  4. #4
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    The wear marks from the throw out bearing are uneven, which suggests something isn't sitting square. Are you sure it was installed correctly?

  5. #5
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    Thanks for the replies guys.

    I've seen/had trashed clutches before, just haven't seem them wear only half of the friction material. Or is that how clutches work? As you press clutch pedal, the pressure plate releases the clamping force from the outside in?

    As for the mates car, he installs everything with rattle guns, so unsure how accurately/evenly things are tightened or installed.

    It's an R32 skyline, RB20, with RB25 gearbox. The clutch kit was to suit RB25 (identical except shorter throwout bearing carrier to suit the gearbox, I'm pretty sure). He did have a clutch feeling issue with a mystery clutch master, until he changed to an R33 clutch master.

    He's looking at just putting in a cheap brass button to last a few months until he does a gay engine swap of some sort.

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