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| Engine, Exhaust, Transmission Discuss the FR-S | 86 | BRZ engine, exhaust and drivetrain. |
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#1 |
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Trouble shifting without rev-matching
I've read quite a lot about our cars' transmissions and shifting, but my problem seems to be slightly different.
Basically, I'm having trouble shifting gears at speed when not rev-matching. Almost no problems shifting into 1st or any other gear when stopped, but gets progressively more difficult while driving until 5th and 6th. I had the trans and clutch fluids replaced (no noticeable difference), I am depressing the pedal fully until the bump stop. There is no grinding, and with rev-matching, 2nd, 3rd and 4th click in very smoothly, while 5th and 6th even then need a tiny bit of force. Any ideas? Is there anything I can check, or straight to the shop for a full clutch kit replacement? 60k miles on the clock, probably on the original clutch. |
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#2 |
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How far can you lift your foot before the clutch begins to engage?
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#3 |
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About 1/4 of the total pedal travel.
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And just upshifting is difficult? Fifth and sixth require a bit of patience. No surprise there.
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#5 |
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How long has this problem been developing? Any noise or vibration when you depress the clutch pedal? Does it go into reverse without grinding?
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| The Following User Says Thank You to blsfrs For This Useful Post: | Ultramaroon (12-20-2022) |
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#6 |
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Trans fluid is incredibly important. What type is it filled with?
When you say rev matching, you mean just waiting a moment for the revs to drop before it slides into gear?
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#7 |
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Rev matching is the opposite of what you are describing. Blipping the throttle between gears.
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| The Following 2 Users Say Thank You to NoHaveMSG For This Useful Post: | Lantanafrs2 (12-21-2022), Ultramaroon (12-20-2022) |
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#8 |
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I know, hence my confusion. He's talking about upshifting, you don't blip the throttle on upshift. So "rev matching" must mean just letting the revs fall a bit in between shifts. But this is why I'm asking for clarification.
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| The Following User Says Thank You to terboboost For This Useful Post: | Ultramaroon (12-20-2022) |
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#9 |
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I'm reading it as he's talking about up and down.
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#10 |
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Both up and down. I know, when you say rev-matching everyone thinks only of downshifts, but I meant in general - if the revs don't match the gear I want to shift into.
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#11 | |
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Quote:
As Ultra said, 5th and 6th you have to be a bit more patient with shifting up and is normal.
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#12 | |
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Quote:
I mean that if I upshift too fast or too slow, then as you write - "I need to be a bit more patient". To be honest I'm surprised, because many of you say that's somewhat normal in a Toybaru. I've probably owned 10 MT cars in my life, driven another 10 or 20 different ones, and that's the first time I'm encountering such issue. |
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#13 | |
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Quote:
Fluid makes a big difference in this car as already mentioned. Do you know what they filled it with?
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#14 |
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Syncro clutches are undersized in this transmission. I also tend to double-clutch my downshifts to avoid having to lean into the gearshift.
Now... It's quite possible that something is wrong so, grain of salt with all this. edit: How long have you had the car? It really is the fussiest (non-industrial) transmission I've ever operated.
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