Slow revving? Manual car. - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

SprayedBigCube · 07-07-2012, 08:01 PM

I don't know, but to me, my new FR-S seems to rev incredibly slow. Seems like it struggles to get thru 4000 rpm whether unloaded or loaded. Makes me want to do a LS motor swap like...soon...but all fantasy aside, I knew going into this it would be underpowered, but that AND slow to rev is a bit much.

With the electronic throttle in my LS3 Camaro, I can tune several parameters that help throttle response, and that heavy motor revs instantly, almost Honda-like compared to my Scion. Would something like the Cobb access port help the FR-S out?

Max Schnell · 07-07-2012, 08:34 PM

Lightweight flywheel will usually help with the slow reving thing. I don't know what the stock weight is but it may be something to look into as people change their stock clutches.

DIE1000DEATHS · 07-07-2012, 10:12 PM

Lightweight crank pulley.

Rurounimidnight · 07-07-2012, 10:20 PM

Im guessing once people start tuning the ECU it should lead to being able to make the throttle response better, Most factory cars limit the % that the throttle body can open even at wot.

serialk11r · 07-07-2012, 10:42 PM

Didn't Orido or someone comment that the flywheel felt heavy? (never touched one of these cars, maybe someone who owns one can comment)

arghx7 · 07-07-2012, 11:57 PM

The flywheel is probably heavier than some people would prefer, but it's easier for dealerships to sell a car that takes off from a light smoothly with a low chance of stalling.

Coheed · 07-08-2012, 12:13 AM

More weight to get that clutch-kick to drift easily. ;P

SprayedBigCube · 07-08-2012, 12:23 AM

Sure, and it's been easy teaching the wife how to drive a manual for the first time in her life because of it. However, I think that heavy flywheel conspires with that midrange torque dip plus maybe a lazy throttle-by-wire control scheme resulting in poor engine acceleration...either that or there's a plastic bag stuck in the intake LOL!

civicdrivr · 07-08-2012, 12:35 AM

The stock flywheels is a hair over 20.5lbs (per Vivid Racing). It feels heavy to me, but Im used to a 12lb flywheel and a 1.2lb crank pulley in my other car.

Im sure the engine will liven up a bit with breathing mods, but the biggest difference will be the flywheel.

SprayedBigCube · 07-08-2012, 12:54 AM

Yeah, I'm not sure the wife will let me swap in a new clutch/flywheel in her new car LOL. I can't believe how heavy the OEM flywheel is. 20 lbs? I believe the ACT flywheel in my LS3 Camaro is a tick over 12 lbs. Hmmm...I need to work on a plan to convince the wife that her new car needs a new clutch so I can get a lighter flywheel in there

civicdrivr · 07-08-2012, 12:59 AM

20lbs....heavy?

The stock flywheel in my CL was 42lbs. No joke.

Coheed · 07-08-2012, 01:01 AM

Anyone know if this clutch/fly is dual mass or not?

civicdrivr · 07-08-2012, 02:33 AM

I dont believe it is - at least, it doesnt act like one.

Bonburner · 07-08-2012, 04:56 AM

Wow ..
So I wanna do ..
pulley, fly wheel, intake, exhaust, header, tune :]

07-07-2012, 08:01 PM	#1
SprayedBigCube Member Join Date: Jul 2012 Drives: 2013 FRS 6M, 2010 Camaro 2SS 6M Location: Fort Walton Beach Posts: 29 Thanks: 10 Thanked 4 Times in 3 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	Slow revving? Manual car. I don't know, but to me, my new FR-S seems to rev incredibly slow. Seems like it struggles to get thru 4000 rpm whether unloaded or loaded. Makes me want to do a LS motor swap like...soon...but all fantasy aside, I knew going into this it would be underpowered, but that AND slow to rev is a bit much. With the electronic throttle in my LS3 Camaro, I can tune several parameters that help throttle response, and that heavy motor revs instantly, almost Honda-like compared to my Scion. Would something like the Cobb access port help the FR-S out? __________________ FRS bone stock. Camaro SS LSA forged, stroked, ported, nitrous plate w/standalone, dyno tuned old stock cube numbers: NA-473/437, N20-585/626 at the wheels, 3.90 RPM diff, ACT twin-disk clutch, 18x10 F14's w/NT05R 305/45's, and other supporting mods.

07-08-2012, 12:23 AM	#8
SprayedBigCube Member Join Date: Jul 2012 Drives: 2013 FRS 6M, 2010 Camaro 2SS 6M Location: Fort Walton Beach Posts: 29 Thanks: 10 Thanked 4 Times in 3 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	Sure, and it's been easy teaching the wife how to drive a manual for the first time in her life because of it. However, I think that heavy flywheel conspires with that midrange torque dip plus maybe a lazy throttle-by-wire control scheme resulting in poor engine acceleration...either that or there's a plastic bag stuck in the intake LOL! __________________ FRS bone stock. Camaro SS LSA forged, stroked, ported, nitrous plate w/standalone, dyno tuned old stock cube numbers: NA-473/437, N20-585/626 at the wheels, 3.90 RPM diff, ACT twin-disk clutch, 18x10 F14's w/NT05R 305/45's, and other supporting mods.

07-08-2012, 12:35 AM	#9
civicdrivr Senior Member Join Date: Mar 2012 Drives: 2018 Golf R Location: Richmond, VA Posts: 2,807 Thanks: 5,386 Thanked 1,095 Times in 647 Posts Mentioned: 68 Post(s) Tagged: 7 Thread(s)	The stock flywheels is a hair over 20.5lbs (per Vivid Racing). It feels heavy to me, but Im used to a 12lb flywheel and a 1.2lb crank pulley in my other car. Im sure the engine will liven up a bit with breathing mods, but the biggest difference will be the flywheel. __________________ Parting out HERE

07-08-2012, 12:54 AM	#10
SprayedBigCube Member Join Date: Jul 2012 Drives: 2013 FRS 6M, 2010 Camaro 2SS 6M Location: Fort Walton Beach Posts: 29 Thanks: 10 Thanked 4 Times in 3 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	Yeah, I'm not sure the wife will let me swap in a new clutch/flywheel in her new car LOL. I can't believe how heavy the OEM flywheel is. 20 lbs? I believe the ACT flywheel in my LS3 Camaro is a tick over 12 lbs. Hmmm...I need to work on a plan to convince the wife that her new car needs a new clutch so I can get a lighter flywheel in there __________________ FRS bone stock. Camaro SS LSA forged, stroked, ported, nitrous plate w/standalone, dyno tuned old stock cube numbers: NA-473/437, N20-585/626 at the wheels, 3.90 RPM diff, ACT twin-disk clutch, 18x10 F14's w/NT05R 305/45's, and other supporting mods.

07-08-2012, 12:59 AM	#11
civicdrivr Senior Member Join Date: Mar 2012 Drives: 2018 Golf R Location: Richmond, VA Posts: 2,807 Thanks: 5,386 Thanked 1,095 Times in 647 Posts Mentioned: 68 Post(s) Tagged: 7 Thread(s)	20lbs....heavy? The stock flywheel in my CL was 42lbs. No joke. __________________ Parting out HERE

07-07-2012, 08:34 PM	#2
Max Schnell Senior Member Join Date: Dec 2011 Drives: Lexus GS350 F-sport Location: East Posts: 251 Thanks: 4 Thanked 61 Times in 37 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	Lightweight flywheel will usually help with the slow reving thing. I don't know what the stock weight is but it may be something to look into as people change their stock clutches.

07-07-2012, 10:12 PM	#3
DIE1000DEATHS TechNINJA Join Date: Jun 2012 Drives: Whiteout MT, 87 Mustang, 09 RUCKUS Location: Detroit, Murder Mitten Posts: 130 Thanks: 73 Thanked 46 Times in 27 Posts Mentioned: 1 Post(s) Tagged: 0 Thread(s)	Lightweight crank pulley.

07-07-2012, 10:20 PM	#4
Rurounimidnight Member Join Date: Jul 2012 Drives: Past S13 S14 350Z, Future FRS Location: Houston TX Posts: 64 Thanks: 10 Thanked 15 Times in 10 Posts Mentioned: 1 Post(s) Tagged: 0 Thread(s)	Im guessing once people start tuning the ECU it should lead to being able to make the throttle response better, Most factory cars limit the % that the throttle body can open even at wot.

07-07-2012, 11:57 PM	#6
arghx7 Senior Member Join Date: Nov 2011 Drives: car Location: cold Posts: 599 Thanks: 72 Thanked 611 Times in 185 Posts Mentioned: 33 Post(s) Tagged: 0 Thread(s)	The flywheel is probably heavier than some people would prefer, but it's easier for dealerships to sell a car that takes off from a light smoothly with a low chance of stalling.

07-08-2012, 12:13 AM	#7
Coheed Senior Member Join Date: Jun 2012 Drives: DGM BRZ Limited Location: Seattle Posts: 813 Thanks: 209 Thanked 225 Times in 157 Posts Mentioned: 1 Post(s) Tagged: 0 Thread(s)	More weight to get that clutch-kick to drift easily. ;P

07-08-2012, 01:01 AM	#12
Coheed Senior Member Join Date: Jun 2012 Drives: DGM BRZ Limited Location: Seattle Posts: 813 Thanks: 209 Thanked 225 Times in 157 Posts Mentioned: 1 Post(s) Tagged: 0 Thread(s)	Anyone know if this clutch/fly is dual mass or not?

07-08-2012, 02:33 AM	#13
civicdrivr Senior Member Join Date: Mar 2012 Drives: 2018 Golf R Location: Richmond, VA Posts: 2,807 Thanks: 5,386 Thanked 1,095 Times in 647 Posts Mentioned: 68 Post(s) Tagged: 7 Thread(s)	I dont believe it is - at least, it doesnt act like one. __________________ Parting out HERE

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