2nd gear grind - Page 3 - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

ls1ac · 02-19-2020, 03:03 PM

Two things, Tcoat, love the first vid of shifting. That was how we were thought on a four speed while racing as your hand position helped get the right gear. Not so good with a six speed.
Any time your are pushing the gear lever against resistance going into a gear you are wearing the syncros. Getting a rev match will reduce wear. It does not apply to racing as most parts are wear items and expected to be replaced.

Side note: Complaining about stiff shifting while cold is like saying your steak is tough while eating it frozen.

Tcoat · 02-19-2020, 03:14 PM

Quote:

Originally Posted by ls1ac

Two things, Tcoat, love the first vid of shifting. That was how we were thought on a four speed while racing as your hand position helped get the right gear. Not so good with a six speed.
Any time your are pushing the gear lever against resistance going into a gear you are wearing the syncros. Getting a rev match will reduce wear. It does not apply to racing as most parts are wear items and expected to be replaced.

Side note: Complaining about stiff shifting while cold is like saying your steak is tough while eating it frozen.

Yes the rev match is another topic all on it's own I was really just talking about the top two issues I have seen. A 6 speed requires some extra hand movements but the principal remains the same. The only vehicle I ever drove that does not use some variation of the two finger open palm method was the old non syncroed army jeeps and trucks. Those sometimes took all the grip strength you had to shift.

ls1ac · 02-19-2020, 03:46 PM

Early 2 1/2 ton dump going up a hill with a load of gravel!!! Do not miss the shift or you start all over.

Tcoat · 02-19-2020, 04:11 PM

Quote:

Originally Posted by ls1ac

Early 2 1/2 ton dump going up a hill with a load of gravel!!! Do not miss the shift or you start all over.

One of the vehicles I learned MT on was a 1952 International dump truck my dad had for a while. Too bad that cell phone videos didn't exist back then because 10 year old me trying to clutch and shift must have been hilarious to watch. I can still hear those poor gears screaming.

humfrz · 02-20-2020, 02:13 AM

Quote:

Originally Posted by Tcoat

One of the vehicles I learned MT on was a 1952 International dump truck my dad had for a while. Too bad that cell phone videos didn't exist back then because 10 year old me trying to clutch and shift must have been hilarious to watch. I can still hear those poor gears screaming.

I got the picture - ol Tcoat about to make a run -

humfrz

humfrz · 02-20-2020, 02:30 AM

Welp, this is the type of truck I learnt how to shift a vehicle with rubber tires.

1941 Ford 2 ton truck, loaded with hay, going across a rough hay field made for some "interesting" shifts from this kid -

humfrz

Broseph · 02-20-2020, 02:37 AM

So is this a thing with this tranny? I thought this was a similar Aisin tranny to the STI’s Aisin, just slightly less robust. Is 2nd gear grind a common occurrence?
Are they like that new or is it a degradation over time as the synchros wear?
The times I’ve driven (mostly brand new) BRZs, I haven’t experienced any grind at all.

soundman98 · 02-20-2020, 02:55 AM

I think it's a PEBCAC issue.

JesseG · 02-21-2020, 12:43 PM

With my FR-S the 1-2 shift is the one I have to be extra careful about. Going into 1st can also be difficult. Once the car/transmission is warmed up most of those quirks go away. Many times going into 2nd I can feel the synchros through the shifter. Like actually feel them spinning. This car really connects you to the driving experience.

Sent from my iPhone using Tapatalk

Tcoat · 02-21-2020, 02:22 PM

Quote:

Originally Posted by Broseph

So is this a thing with this tranny? I thought this was a similar Aisin tranny to the STI’s Aisin, just slightly less robust. Is 2nd gear grind a common occurrence?
Are they like that new or is it a degradation over time as the synchros wear?
The times I’ve driven (mostly brand new) BRZs, I haven’t experienced any grind at all.

It only really happen when it is cold, if you pause too long while shifting or if you are even a bit sloppy in position. It actually bets better as the tranny wears in.

DarkPira7e · 02-21-2020, 03:05 PM

Quote:

Originally Posted by soundman98

I think it's a PEBCAC issue.

Keyboard starts with a K, not a c!

LimitedSlip · 02-21-2020, 09:39 PM

Quote:

Originally Posted by DarkPira7e

Keyboard starts with a K, not a c!

Agreed. However, PEBCAC is:
"Problem Exists Between Chair And Computer."
Similar sentiment only with a "C".

DarkSunrise · 02-21-2020, 10:19 PM

Make sure to take your foot completely off the throttle between shifts. In normal driving, I find that helps smooth out the shifts, especially 1-2.

For high RPM shifting at the track it's not a problem though, only normal driving.

02-20-2020, 02:30 AM	#34
humfrz Senior Member Join Date: May 2013 Drives: 2013 FR-S, white, MT Location: Puyallup, WA Posts: 30,432 Thanks: 29,826 Thanked 32,845 Times in 16,844 Posts Mentioned: 715 Post(s) Tagged: 2 Thread(s)	Welp, this is the type of truck I learnt how to shift a vehicle with rubber tires. 1941 Ford 2 ton truck, loaded with hay, going across a rough hay field made for some "interesting" shifts from this kid - humfrz Attached Images

02-20-2020, 02:55 AM	#36
soundman98 ProCrastinationConsultant Join Date: Sep 2013 Drives: '14 Ranger, '18 Tacoma 4Dr LB Location: chicago-ish Posts: 11,330 Thanks: 35,240 Thanked 13,675 Times in 6,782 Posts Mentioned: 98 Post(s) Tagged: 0 Thread(s)	I think it's a PEBCAC issue. __________________ "The time you enjoy wasting is not wasted time"

02-21-2020, 10:19 PM	#41
DarkSunrise Senior Member Join Date: Apr 2012 Drives: 22 BRZ (Previously 13 FR-S) Location: USA Posts: 5,798 Thanks: 2,187 Thanked 4,243 Times in 2,221 Posts Mentioned: 48 Post(s) Tagged: 2 Thread(s)	Make sure to take your foot completely off the throttle between shifts. In normal driving, I find that helps smooth out the shifts, especially 1-2. For high RPM shifting at the track it's not a problem though, only normal driving. __________________ "Never run out of real estate, traction, and ideas at the same time." 2022 BRZ Build 2013 FR-S Build

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02-20-2020, 02:37 AM	#35
Broseph Member Join Date: Jan 2020 Drives: Subaru Location: CO Posts: 63 Thanks: 3 Thanked 18 Times in 13 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	So is this a thing with this tranny? I thought this was a similar Aisin tranny to the STI’s Aisin, just slightly less robust. Is 2nd gear grind a common occurrence? Are they like that new or is it a degradation over time as the synchros wear? The times I’ve driven (mostly brand new) BRZs, I haven’t experienced any grind at all.

02-21-2020, 12:43 PM	#37
JesseG Senior Member Join Date: Aug 2019 Drives: 2016 Scion FR-S Location: Dallas Posts: 806 Thanks: 2,685 Thanked 393 Times in 266 Posts Mentioned: 1 Post(s) Tagged: 0 Thread(s)	With my FR-S the 1-2 shift is the one I have to be extra careful about. Going into 1st can also be difficult. Once the car/transmission is warmed up most of those quirks go away. Many times going into 2nd I can feel the synchros through the shifter. Like actually feel them spinning. This car really connects you to the driving experience. Sent from my iPhone using Tapatalk

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