WHAT DID YOU DO TO YOUR FRS TODAY? - Page 1678 - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

Little Samurai · 01-20-2022, 08:29 AM

Valves Control on the FA20 Engine

blsfrs · 01-20-2022, 09:27 AM

I hear that you can adjust the clearance by adding extra sealant.

Little Samurai · 01-22-2022, 05:46 PM

Quote:

Originally Posted by blsfrs

I hear that you can adjust the clearance by adding extra sealant.

we set the valves specifically to a tenth so that the engine runs smoothly. many think it has hydraulic valve lifters but that is wrong. The valves have to be adjusted every 60,000 km

Wally86 · 01-22-2022, 07:32 PM

Quote:

Originally Posted by soundman98

16's really look good on these cars!

Quote:

Originally Posted by Little Samurai

we set the valves specifically to a tenth so that the engine runs smoothly. many think it has hydraulic valve lifters but that is wrong. The valves have to be adjusted every 60,000 km

The FA20 has shims??

blsfrs · 01-23-2022, 11:19 AM

Quote:

Originally Posted by Little Samurai

we set the valves specifically to a tenth so that the engine runs smoothly. many think it has hydraulic valve lifters but that is wrong. The valves have to be adjusted every 60,000 km

Track or street driving? Most of us aren't going pull our engines to adjust the valves at 40,000 miles.

WNDSRFR · 01-23-2022, 02:41 PM

Quote:

Originally Posted by Little Samurai

we set the valves specifically to a tenth so that the engine runs smoothly. many think it has hydraulic valve lifters but that is wrong. The valves have to be adjusted every 60,000 km

So, you're saying I should have dropped my engine and adjusted the valves 5 times by now? Even though there's nothing wrong with them?
Damn, it's a big enough PITA just to drop the tranny every 100,000 miles to replace the TOB!

Compelica · 01-26-2022, 10:47 AM

Did an autocross and gymkhana practice session today. Far more engaging than a track day - I should have started way sooner.

NoHaveMSG · 01-26-2022, 12:43 PM

Bucket shim has very little wear, especially when a roller rocker is also incorporated. You may see some minor lash changes in the first service interval, not necessarily large enough to require adjustment. Further intervals typically see very little change if any. The rocker pivot sits in a galley and is acted on by pressurized oil. It is not acting as a hydraulic lash adjuster but probably does take up some play while the engine is running.

blsfrs · 01-27-2022, 10:11 AM

My understanding is the long term problem with lash is the loss of lash due to valve recession, not an increase due to wear and tear that you might see in a push rod engine.

NoHaveMSG · 01-27-2022, 12:51 PM

Quote:

Originally Posted by blsfrs

My understanding is the long term problem with lash is the loss of lash due to valve recession, not an increase due to wear and tear that you might see in a push rod engine.

In general this has been my experience. The worst is SOHC with tappet follower. Those always get out of spec and end up all over the place. Not a common in cars though, usually just air cooled motorcycles.

MJones_RB · 01-27-2022, 02:54 PM

Quote:

Originally Posted by NoHaveMSG

In general this has been my experience. The worst is SOHC with tappet follower. Those always get out of spec and end up all over the place. Not a common in cars though, usually just air cooled motorcycles.

One thing I learned about valve lash adjustment, from my GS-R days, is that getting them into spec can help you pass SMOG.

NoHaveMSG · 01-27-2022, 03:06 PM

Quote:

Originally Posted by MJones_RB

One thing I learned about valve lash adjustment, from my GS-R days, is that getting them into spec can help you pass SMOG.

I could see a tight valve cause issues on an emission test.

DarkSunrise · 01-30-2022, 06:23 PM

Finally washed it! Unfortunately was a machine wash since my kid loves them (the first the car’s ever seen)but I think it turned out pretty decent. A few marks left (melted rubber streaks from the track) but I’ll clean those off later.

soundman98 · 01-30-2022, 07:04 PM

stared at it longingly while it sits in the garage. said screw it, went inside to grab the keys, and it started snowing...

01-20-2022, 08:29 AM	#23479
Little Samurai Ulli Join Date: Jan 2022 Drives: Toyota GT86 Location: Germany Wuppertal Posts: 63 Thanks: 25 Thanked 53 Times in 21 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	Valves Control on the FA20 Engine Attached Images __________________ https://www.packeisen-motorsport.de/toyota-gt86-cup-cs https://www.youtube.com/channel/UCds...E4I_PkhBwbPfew

01-26-2022, 10:47 AM	#23485
Compelica Senior Member Join Date: Apr 2019 Drives: 86 GT Location: Malaysia Posts: 398 Thanks: 265 Thanked 229 Times in 119 Posts Mentioned: 2 Post(s) Tagged: 0 Thread(s)	Did an autocross and gymkhana practice session today. Far more engaging than a track day - I should have started way sooner. __________________ DIY stuff at Compelica Works

01-30-2022, 06:23 PM	#23491
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)	Finally washed it! Unfortunately was a machine wash since my kid loves them (the first the car’s ever seen)but I think it turned out pretty decent. A few marks left (melted rubber streaks from the track) but I’ll clean those off later. Attached Images __________________ "Never run out of real estate, traction, and ideas at the same time." 2022 BRZ Build 2013 FR-S Build

01-30-2022, 07:04 PM	#23492
soundman98 ProCrastinationConsultant Join Date: Sep 2013 Drives: '14 Ranger, '18 Tacoma 4Dr LB Location: chicago-ish Posts: 11,330 Thanks: 35,240 Thanked 13,676 Times in 6,782 Posts Mentioned: 98 Post(s) Tagged: 0 Thread(s)	stared at it longingly while it sits in the garage. said screw it, went inside to grab the keys, and it started snowing... __________________ "The time you enjoy wasting is not wasted time"

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01-20-2022, 09:27 AM	#23480
blsfrs Senior Member Join Date: Dec 2018 Drives: 2013 frs base Location: central Virginia Posts: 1,444 Thanks: 2,713 Thanked 1,459 Times in 688 Posts Mentioned: 13 Post(s) Tagged: 0 Thread(s)	I hear that you can adjust the clearance by adding extra sealant.

01-27-2022, 10:11 AM	#23487
blsfrs Senior Member Join Date: Dec 2018 Drives: 2013 frs base Location: central Virginia Posts: 1,444 Thanks: 2,713 Thanked 1,459 Times in 688 Posts Mentioned: 13 Post(s) Tagged: 0 Thread(s)	My understanding is the long term problem with lash is the loss of lash due to valve recession, not an increase due to wear and tear that you might see in a push rod engine.

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