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


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Old 12-20-2017, 05:06 PM   #1
RickyRacer
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Will this flywheel work with OEM clutch?

TOB is done on my car

While I'm fixing it, I bought a brand new clutch and wondering if this lightweight flywheel is compatible with the OE clutch

They are both made by exedy
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Old 12-20-2017, 05:50 PM   #2
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http://www.lmperformance.com/856993/...2013-2016.html


The flywheel
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Old 12-20-2017, 06:50 PM   #3
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Originally Posted by RickyRacer View Post
TOB is done on my car

While I'm fixing it, I bought a brand new clutch and wondering if this lightweight flywheel is compatible with the OE clutch

They are both made by exedy
I don't see why not ....... but, I would suggest you contact Exedy and ask them ......


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Old 12-20-2017, 07:53 PM   #4
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I don't see why not ....... but, I would suggest you contact Exedy and ask them ......


humfrz
thanks i will check with them tomorrow.

I'm surprised there aren't more reviews of people installing LWFWs on this car... can't weight to have this one on...hopefully... if it fits
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Old 12-20-2017, 09:54 PM   #5
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If you daily your car, I bet you lunch you'll grow to hate it within a month.
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Old 12-20-2017, 10:38 PM   #6
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If you daily your car, I bet you lunch you'll grow to hate it within a month.
So true. Keep stock flywheel.
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Old 12-20-2017, 11:00 PM   #7
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If you daily your car, I bet you lunch you'll grow to hate it within a month.
just curious, why? what difference does it make in the drive-ability?
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Old 12-20-2017, 11:11 PM   #8
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just curious, why? what difference does it make in the drive-ability?
Lot of shudder.
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Old 12-20-2017, 11:19 PM   #9
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just curious, why? what difference does it make in the drive-ability?
It's easier to stall or slip the clutch, you need to have more precise clutching ability. That said I had zero issues daily driving a '90 Integra RS with an 8lb ACT prolite racing flywheel, actually liked it much better than stock, way more responsive to throttle input. Also depowered /unvalved the steering rack and put in a smaller diameter steering wheel... wasn't an ideal daily driver but was fun and quick in response! Plan to put a TRD lightweight flyweel in my FR-S soon, TOB is starting to complain more these days...
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Old 12-20-2017, 11:49 PM   #10
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Quote:
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just curious, why? what difference does it make in the drive-ability?
The stock flywheel is already as light as reasonably possible. Firing pulses are clearly felt well past 2000 RPM. That's not trivial. Lightening the flywheel increases that effect, making idle rougher and low speed operation more annoying than it already is.

I would love to have a sharp responsive powerplant that feels like a straight-4 liter bike but that's just not what this engine does well.

Read all this as my opinion. I've considered, and talked myself out of a light flywheel many times.
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Old 12-21-2017, 12:15 AM   #11
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Quote:
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just curious, why? what difference does it make in the drive-ability?
One purpose of a flywheel is to smooth out the engine pulses. The lighter the flywheel the rougher the engine feels, especially at lower speeds. Usually, engines with fewer cylinders need larger (heavier) flywheels.

Check the flywheel on the side of this two banger pow-pow JD tractor ......


OK, I'm done ............


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Old 12-21-2017, 03:51 AM   #12
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Quote:
Originally Posted by Ultramaroon View Post
The stock flywheel is already as light as reasonably possible. Firing pulses are clearly felt well past 2000 RPM. That's not trivial. Lightening the flywheel increases that effect, making idle rougher and low speed operation more annoying than it already is.

I would love to have a sharp responsive powerplant that feels like a straight-4 liter bike but that's just not what this engine does well.

Read all this as my opinion. I've considered, and talked myself out of a light flywheel many times.
Thank you Ultra, for getting rid of the idea of me getting a light weight flywheel in the future.

Backed with real reason, understanding & experience.
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Old 12-21-2017, 05:27 AM   #13
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humfrz: i wonder if i can retrofit those rear wheels of tractor in pic. Will i need to roll fenders and increase camber to not rub?
Such wheels may certainly reduce spending on tires!
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Old 12-21-2017, 09:45 AM   #14
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Quote:
Originally Posted by Ultramaroon View Post
The stock flywheel is already as light as reasonably possible. Firing pulses are clearly felt well past 2000 RPM. That's not trivial. Lightening the flywheel increases that effect, making idle rougher and low speed operation more annoying than it already is.

I would love to have a sharp responsive powerplant that feels like a straight-4 liter bike but that's just not what this engine does well.

Read all this as my opinion. I've considered, and talked myself out of a light flywheel many times.
Oooh @Ultramaroon it's not that bad! The stock flywheel is 28 lbs!

I put a 13lb flywheel in at 3000 miles and have driven it for 32k. You do need to get a little used to the needing to rev slightly higher from a stop to get going, but as long as you have good throttle control it's fine. Idle and other things are not bad at all. Totally tolerable. I'm also at a mile high elevation.

The best additional mod that leveled all of this out was a 4.88 FD. Made everything feel more like "stock", except quicker all around.

Really in the end it depends on OP's future goals and mods. It's always good to have a "vision" of what you want your car to be and how you want it to act.
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