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Engine, Exhaust, Transmission Discuss the FR-S | 86 | BRZ engine, exhaust and drivetrain. |
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06-06-2021, 09:43 PM | #15 |
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When my pivot bent it caused the fork to go off center causing the slave pushrod to pushing at a big angle. My bet is you bent the fork. Just buy both so you are prepared. They are cheap.
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06-07-2021, 09:36 AM | #16 |
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Thanks. Yes, I am at least going to buy a new release fork; however, I'm trying to decide whether to stick with an OEM part or something much stronger (e.g., made from a billet or forged), but that has OEM fitment. Of course, the problem is that stronger forks appear to be quite a bit more expensive so I'm torn. It's surprising to me this happened after only 70K miles and with mostly regular, non-aggressive driving/shifting. It makes me believe the fork hasn't been designed strong enough and not wanting to have to do this again in another 70K miles is almost enough to make me plunk down the extra cash. However, I understand that in most cases, even for relatively frequent spirited driving, stock components by and large will get the job done and already have a ton of engineering behind them.
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06-07-2021, 10:24 AM | #17 | |
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06-07-2021, 12:21 PM | #18 | |
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06-07-2021, 08:36 PM | #19 | |
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Assuming you know how to drive the clutch seems to last forever. I am still on my original and I was just in there to replace my TOB and it still had a ton of life. |
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06-08-2021, 10:00 AM | #20 |
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I’ve decided to replace the clutch with an aftermarket part, the south bend stage 2 daily clutch which seems to do you well for people with forced induction. I’ve been growing concerned that I am leaving some FI power gains on the table with the stock clutch.
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06-12-2021, 06:27 PM | #21 |
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TOB went out right on schedule
I just turned 51K and the TOB started making noise this morning. I'll replace it ASAP. I'm at least thinking about a mild FI setup someday. 20% increase max. From what I've read here before, the stock clutch is adequate for that amount. Or should I upgrade it now? Also, I recall reading that the latest TOBs no longer have the white dot. Is anything I get from Toyota now going to be OK? Or are there numbers to check?
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06-12-2021, 06:58 PM | #22 | |
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Toyota 86 in the building! |
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06-15-2021, 12:48 PM | #23 | |
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06-24-2021, 07:22 PM | #24 |
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So I final got around to dropping the transmission and this is what my clutch release fork looked like. I'm surprised it lasted for even a day with little driving considering I almost adjusted the clutch pedal all the way in. Until I started learning about the issue I would have never thought it was so under designed that the fork pivot would eventually cause fatigue failure of the fork itself. What a joke. Have other peoples' clutch forks failed like this?
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06-26-2021, 11:49 AM | #25 |
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After seeing that, I'm going to order an upgraded fork. Fortunately the stage-1 parts I ordered are still in the box. How many miles are on that fork?
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07-01-2021, 08:21 AM | #26 |
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Just under 69k miles.
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07-01-2021, 12:29 PM | #27 |
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I've opened mine three times now just to clean and lube. I wonder if Subaru changed anything for the second gen.
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07-01-2021, 03:35 PM | #28 | |
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Mine just started squeaking and the last inch of pedal travel feels a little crunchy. I did the TOB and snout ~18k miles ago, I can't imagine either could have failed so quickly. I had used the lucas red n tacky stuff since some posts here said it was similar to OE. Hoping I can just smear some new grease in there. I've had a nagging feeling I should have left the car on jack stands an extra day or two and taken the time to machine a bronze pivot :/
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