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Engine, Exhaust, Transmission Discuss the FR-S | 86 | BRZ engine, exhaust and drivetrain.


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Old 12-03-2018, 12:33 AM   #29
Legend@wheels
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Originally Posted by Ultramaroon View Post
dammit, humfrz.

You are actually shifting too slowly. Inexperienced careful owners often mistake shifting gently with shifting slowly. I will do my best to explain/support my argument. This will either cure the issue, or it will help us troubleshoot. Then humfrz will bookmark this thread and refer to it future owners who want to better understand their transmissions.

One good thing about shifting carefully is the reward felt from a well-executed shift. It also increases the number of miles - or more precisely, the number of shifts into each gear - it will take for your transmission to break in. Does it improve the overall service life of the transmission? I don't really know. It can't hurt.
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The syncros are carefully sized for this application. They don't give you any extra juice to make up for sloppy shifts. The gearbox is also more sensitive to viscous drag than any other I can recall. Opinions vary about how to manage this. I've read about how it likes to be man-handled, or how it only works well when you shift at a higher rpm, blah blah blah... I say that if you have a realistic idea of what's going on in there, you can tailor your shifting style according to operating conditions and potentially extend the vehicle's service life overall. For instance, with what I've learned about the oiling system, I shudder at the idea of running this engine cold above 2500 rpm. The whole idea of running it up to 4K just to get into second is ludicrous.


Do I have your attention?
hi
i shift too slowly/@early rpm?even if i do its still not the problem anyway..
cuz when i shift fast/@high rpm its still acts the same so its not that.
Also that Pre grinding feel happens like 1/4 times of shifting from 2 to 3 and and from 1 to 2 about 1/6 times -no matter what rpm i am and no matter how gentle/harsh i shift .
im driving manual cars for like 10years im very familiar with those boxes.even though
ill try to put more attention to it next time i drive the subie and to shift in less gentle motion .

Last edited by Legend@wheels; 12-03-2018 at 12:47 AM.
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Old 12-03-2018, 12:42 AM   #30
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I guess he was refering not rpms at which to shift, but rather shifting motion, how you move lever.
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Old 12-03-2018, 12:48 AM   #31
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You know the drill. Why me?
Because I just wanted the OP to hear it from the expert. Anything I may say, the OP may think that Bubba told that to me -


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Old 12-03-2018, 12:49 AM   #32
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Because I just wanted the OP to hear it from the expert. Anything I may say, the OP may think that Bubba told that to me -


humfrz

but maybe the bubba told him too?@ that you didnt think huh? lol
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Old 12-03-2018, 12:56 AM   #33
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but maybe the bubba told him too?@ that you didnt think huh? lol
Well, not to worry, @Ultramaroon never listens to Bubba - why not.


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Old 12-03-2018, 12:57 AM   #34
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Well, not to worry, @Ultramaroon never listens to Bubba - why not.


humfrz
oh in that case im calm.
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Old 12-03-2018, 01:08 AM   #35
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oh in that case im calm.
Seriously, here is something to check.

Check the fluid level in the clutch reservoir and top off if necessary.

Another thing you might try is to bleed the clutch hydraulic system. You may have gotten some air in the system, which would not allow the slave cylinder to be pushed in as far as you may think.


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Old 12-03-2018, 01:20 AM   #36
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Quote:
Originally Posted by Legend@wheels View Post
hi
i shift too slowly/@early rpm?even if i do its still not the problem anyway..
cuz when i shift fast/@high rpm its still acts the same so its not that.
Also that Pre grinding feel happens like 1/4 times of shifting from 2 to 3 and and from 1 to 2 about 1/6 times -no matter what rpm i am and no matter how gentle/harsh i shift .
im driving manual cars for like 10years im very familiar with those boxes.even though
ill try to put more attention to it next time i drive the subie and to shift in less gentle motion .
It is possible that the balk rings are worn but unlikely that they just happen to be in second and third only.


it's not about harshly/gently. It's about not pausing in neutral. This only pertains to upshifting. Downshifting is a different story.
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Old 12-03-2018, 01:48 AM   #37
Legend@wheels
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Quote:
Originally Posted by humfrz View Post
Seriously, here is something to check.

Check the fluid level in the clutch reservoir and top off if necessary.

Another thing you might try is to bleed the clutch hydraulic system. You may have gotten some air in the system, which would not allow the slave cylinder to be pushed in as far as you may think.


humfrz
Done all of that

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Old 12-03-2018, 03:43 PM   #38
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No matter how i shift its still crap.
Double clutching eliminating it by 90% but still..
Oh well ill let it to get abit worse so it will be more noticeable and than will take it to the dealer to replace with a new transmission.
Luckily i got enough time for the warranty.
Thank you mates.

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Old 12-03-2018, 08:28 PM   #39
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Quote:
Originally Posted by Legend@wheels View Post
No matter how i shift its still crap.
Double clutching eliminating it by 90% but still..
Oh well ill let it to get abit worse so it will be more noticeable and than will take it to the dealer to replace with a new transmission.
Luckily i got enough time for the warranty.
Thank you mates.
There have been some bum builds. It's not out of the realm of possibility. Good luck. Keep us up to date.
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