Si's have defective clutch?

  1. grantsjc

    grantsjc Senior Member

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    Curious how many are seeing clutch slipping in your Si's . My car has just started to have slipping clutch when its warming up - 5 to 10 minutes. Usually slips in higher gears when under full power.

    I drove a different 2017 Si on my test drive and noticed clutch slipping on that car. I test drove my car and didn't get it to slip so thought I was OK. However just started to see clutch slip now. Im very easy on clutches so to me appears 2017 Si's have a defective clutch. Im wondering if this is a clutch plate issue or clutch slave?

    I have had cars that have clutch slave issues that mimic a slipping clutch plate.
     
  2. jakabony

    jakabony Senior Member

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    You sure you aren’t talking about bucking, or the wheels breaking loose? I’ve driven manual for 20 years, and currently have a new Si and a 21 year old Accord manual. They are completely different in terms of clutch feel, like most cars. If you don’t have a smooth engagement when shifting, you will get a bucking motion, but that is not clutch slippage. I highly doubt you are experiencing slippage on two new Honda’s.
     
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  3. OP
    grantsjc

    grantsjc Senior Member

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    ....Let me see. I have been driving and racing manual trans cars for 30 years. Multiple Hondas, multiple nissans, several Porsches , Mazdas and an Audi or two. I indicated slip happening in higher gears under power, not while shifting. Not slipping during shift but when in same gear under acceleration from about 3000 to 5000 rpm. No tire slipping . I have driven sports cars over 120k miles on same clutch and I'm not abusive. Racing cars I know what clutch slip feels like. Nope clutches or slaves are a problem on 2017 Si. I bet there are more reports of this in future. And in fact clutches on both cars both first car I tested and now mine were slipping. Now have a couple more data points that point to real issue. Bet this pops up as bigger issue
     
  4. jakabony

    jakabony Senior Member

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    No insult implied, just asking questions. It appears that you are in the minority in experiencing this. We will see what time will tell for others.
     
  5. CEPA_Si

    CEPA_Si Detailing Guru

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    It's a know fact that the clutches in these cars are the weak link. They barely handle the stock power levels, and are a ticking time bomb with a tune or minor bolt-ons. Not much we can do about it though however, unless you want to fork over the coin to upgrade it.
     
  6. OP
    grantsjc

    grantsjc Senior Member

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    Would think if I drove stock car off showroom with 1 mile on odometer for test drive and was accelerating onto freeway during test drive with clutch slipping that this is a warranty issue. Just want to see how many others are experiencing this problem. If enough of us complain Honda should do right thing and provide proper clutch. It's in Hondas best interest to address issue. I agree the clutch is a real weak point on these cars.
     
  7. OP
    grantsjc

    grantsjc Senior Member

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    #7 grantsjc, Nov 9, 2017
    Last edited: Nov 9, 2017
    No insult taken just indicating I have experience to know what a slipping clutch is in a vehicle. I don't believe I'm in miniority either. To see this in two new 2017 Si I have driven isn't a coincidence. Also seeing reports of this from other forum members in cars with very low mileage.

    Also seeing people with minor tunes needing to upgrade clutches. That's not something that usua happens unless a manufacturer either specs a clutch that is right on limit or has clutch slave or installation issue.

    Test this get on flat open road just as car is warming up and peg throttle at about 3000 rpm in 3 rd gear as you are rolling. This puts max torque to higher gear ratio and will put clutch to test . See if rpms jump out of synch with your speed. It's very subtle but clutch on some cars does slip. Weird thing is it seems to get better when car is warmed up. So wondering also if clutch was installed incorrectly in manufacturing.

    If you detect any slip in first 10,000 miles report it to dealer. Honda needs to know there is an issue. They are a quality company and will address problem in manufacturing and probably give us who are seeing issues upgraded clutches.
     
  8. TheBatman

    TheBatman Senior Member

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    I've not noticed any slipping...5500 mi in 3 mo...still good for me.
     
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  9. Blackbettysi

    Blackbettysi Member

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    My clutch slipped all the time when I 1st bought it but every time the dealer test drove it said it was just heat soak since it was summertime still does it in 3rd gear under 4th rattle before the tune and with the tune. Clutch also feels very stiff sometimes and other times very light. Obviously I Flash it back to stock one taken it to the dealer doesn't seem to do it except in 3rd gear with the stock tune
     
  10. 2Smoker119

    2Smoker119 Member

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    I have 6000 miles on my Si. I haven't noticed any slippage. I will test this asap and report back.
     
  11. mp2017

    mp2017 Senior Member

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    if you're talking about the traction control light coming on even though the tires aren't loosing traction, than mine has done it since day one.
     
  12. kritz

    kritz Senior Member

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    No issues here at 9,300 miles.
     
  13. wesgoood

    wesgoood Member

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    Zero issues with a +9psi tune. Going to get the stage 2 ktuner/dp combo from Vit and I'm sure it will be fine. Mostly because I don't beat the ever living shit out of my car on public roads ...because ...not race track(spirited driving is different than driving like you stole it). Also at 5k miles.
     
  14. T_A_H

    T_A_H Senior Member

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    No slippage @ 4k mi
     
  15. OP
    grantsjc

    grantsjc Senior Member

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    #15 grantsjc, Nov 9, 2017
    Last edited: Nov 9, 2017
    Im a 56 year old guy (not boi racer thrashing my car - if anything you will find us guys who race on track dont race on street) who commutes in rush hour traffic and I dont beat on the car. Test drive of the new SI that was different car was me with my wife and sales guy in the car and I was just accelerating onto freeway . Noticed car running RPMs up when clutch was already deployed. Though thats weird? If anything I pretty much put my Si in 6th gear and cruise. And clutch slip is happening when car is in gear usually in 3rd or 4th gear. My car has never been tracked and it was driven at one AX but even at AX it was put in 2nd gear and driven around course with no shifting. Will change test input to 3rd gear as youd have to speed to do test in 5th.

    Funny thing I originally was thinking oh maybe Honda built in a clutch slip at low RPM to allow turbo to spool up faster. LOL!
     
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