follow ft86club on our blog, twitter or facebook.
FT86CLUB
Ft86Club
Delicious Tuning
Register Garage Community Calendar Today's Posts Search

Go Back   Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community - FT86CLUB > Technical Topics > Suspension | Chassis | Brakes -- Sponsored by 949 Racing

Suspension | Chassis | Brakes -- Sponsored by 949 Racing Relating to suspension, chassis, and brakes. Sponsored by 949 Racing.

Register and become an FT86Club.com member. You will see fewer ads

User Tag List

Reply
 
Thread Tools Search this Thread
Old 09-14-2013, 08:39 AM   #1
regal
Senior Member
 
Join Date: Jun 2012
Drives: Scion FR-S/Toyota Yaris
Location: PA
Posts: 1,438
Thanks: 21
Thanked 316 Times in 232 Posts
Mentioned: 21 Post(s)
Tagged: 0 Thread(s)
Nose drive/nose heavy

The stock FRS, especially tight turns on sharp declines has a tendency to nose dive. I know the stock suspension was sort of setup for "drifting" with the lighter springs up front.

Anyone else experience this? Would higher spring rates up front help or a bigger front sway bar? Also the weight distribution up front leads to a little under damping on sharp declines.

With other cars the solution to this is a matched set of stiffer springs and tighter struts (Koni used makes a great package engineered for specific cars).

Coil overs just aren't an option for me, has anyone found a solution to this issue ?
__________________
2013 FRS Argento Silver 6MT

Mods:
Clear fender side lights
Tactrix ZA1JB01C 2014 Calib
regal is offline   Reply With Quote
Old 09-14-2013, 11:06 AM   #2
448hpsti
In Test:Oil Fed SC
 
448hpsti's Avatar
 
Join Date: May 2013
Drives: Vortech Prototype Test Car
Location: Hotter than where you are
Posts: 355
Thanks: 156
Thanked 142 Times in 89 Posts
Mentioned: 7 Post(s)
Tagged: 0 Thread(s)
I feel you

My wife's car just got a vortech and I can feel the extra weight, I have decided on Rce yellow after vehicle bunch of research and run some nice coil overs from GC on my car. Ah daily driveshersvto work and isn't a coil over candidate either
448hpsti is offline   Reply With Quote
Old 09-14-2013, 11:16 AM   #3
Suberman
Banned
 
Join Date: Jul 2013
Drives: Subaru BRZ Sport Tech Satin White
Location: Calgary, Alberta,Canada
Posts: 1,228
Thanks: 147
Thanked 320 Times in 225 Posts
Mentioned: 10 Post(s)
Tagged: 0 Thread(s)
Quote:
Originally Posted by regal View Post
The stock FRS, especially tight turns on sharp declines has a tendency to nose dive. I know the stock suspension was sort of setup for "drifting" with the lighter springs up front.

Anyone else experience this? Would higher spring rates up front help or a bigger front sway bar? Also the weight distribution up front leads to a little under damping on sharp declines.

With other cars the solution to this is a matched set of stiffer springs and tighter struts (Koni used makes a great package engineered for specific cars).

Coil overs just aren't an option for me, has anyone found a solution to this issue ?
The BRZ doesn't do this. Simplest mod I can think of is to swap in a set of front springs from a Subaru BRZ parts dept. That way you'll get the stiffer front end you think you need plus the stiffer rear end the FRS comes with.

A higher rate front roll bar would also work for cornering but would not totally cure the weight transfer dive caused by braking or lifting off.

Toyota spec'd the softer front spring rates (and crapola tires) to make inducing oversteer easier on the FRS, by lifting off, pitching the front in and then standing on the gas pedal. The weight transfer dive you notice is deliberately dialled in for the FRS and is just for the kids. The BRZ has the suspension set up for grown ups.

I'm also ditching the hopeless Primacy tires, they totally ruin this car for serious drivers. Even my winter tires are better: 225/45x17 Pirelli Sottozeros. I mean whose idea was it to fit 215 profile tires? Who even makes these? They even look silly, like seeing a football player wearing ballet flats.

You can't really power oversteer this car anyway so the stock set up is just silly. And you can still do the silly kids stuff with the BRZ which is unfortunate. This car would be so much better if it had been designed to handle properly from the outset. It is sort of fun to have to really drive these cars but only for a while. It gets old really quickly and you just wish it would go where you pointed it.
Suberman is offline   Reply With Quote
Old 09-14-2013, 11:17 AM   #4
regal
Senior Member
 
Join Date: Jun 2012
Drives: Scion FR-S/Toyota Yaris
Location: PA
Posts: 1,438
Thanks: 21
Thanked 316 Times in 232 Posts
Mentioned: 21 Post(s)
Tagged: 0 Thread(s)
Quote:
Originally Posted by 448hpsti View Post
I feel you

My wife's car just got a vortech and I can feel the extra weight, I have decided on Rce yellow after vehicle bunch of research and run some nice coil overs from GC on my car. Ah daily driveshersvto work and isn't a coil over candidate either

Keep me posted on the rce yellows those look like a great choice, just concerned about using stock shocks with aftermarket springs. Not so much blowout or damage but matching dampening to spring rate.

Thanks
__________________
2013 FRS Argento Silver 6MT

Mods:
Clear fender side lights
Tactrix ZA1JB01C 2014 Calib
regal is offline   Reply With Quote
Old 09-14-2013, 11:34 AM   #5
Suberman
Banned
 
Join Date: Jul 2013
Drives: Subaru BRZ Sport Tech Satin White
Location: Calgary, Alberta,Canada
Posts: 1,228
Thanks: 147
Thanked 320 Times in 225 Posts
Mentioned: 10 Post(s)
Tagged: 0 Thread(s)
Quote:
Originally Posted by regal View Post
Keep me posted on the rce yellows those look like a great choice, just concerned about using stock shocks with aftermarket springs. Not so much blowout or damage but matching dampening to spring rate.

Thanks
Springs stiff enough to overpower the stock dampers would ruin this car.

This car is slow and fun to drive only because it handles so well. Coilovers would completely ruin the car for street driving.
Suberman is offline   Reply With Quote
The Following User Says Thank You to Suberman For This Useful Post:
PowderfaceTr. (09-17-2013)
Old 09-14-2013, 12:48 PM   #6
xwd
Senior Member
 
Join Date: Feb 2012
Drives: 2013 DGM Subaru BRZ (Subie #9)
Location: ATL, US
Posts: 2,667
Thanks: 123
Thanked 861 Times in 552 Posts
Mentioned: 32 Post(s)
Tagged: 0 Thread(s)
Many of the autocross folks in STX class now run higher spring rates in the front than the rear, and others like myself are running even spring rates. I believe the RCE yellows are equal front and rear. Koni yellows also help since they are rebound adjustable and will help control some of the weight transfer.

It's somewhat exacerbated by weight reduction since the easy weight reduction is in the rear of the car (tools/spare, gas, muffler).
xwd is offline   Reply With Quote
Old 09-14-2013, 01:18 PM   #7
Draco-REX
Corner Junkie
 
Draco-REX's Avatar
 
Join Date: Feb 2012
Drives: 13 BRZ, 11 STI, 99 RS
Location: Ohio
Posts: 2,908
Thanks: 129
Thanked 1,521 Times in 702 Posts
Mentioned: 11 Post(s)
Tagged: 0 Thread(s)
RCE Yellows =
Draco-REX is offline   Reply With Quote
Old 09-16-2013, 03:30 PM   #8
Dezoris
Senior Member
 
Dezoris's Avatar
 
Join Date: Aug 2012
Drives: FR-S
Location: IL
Posts: 2,857
Thanks: 519
Thanked 2,998 Times in 1,095 Posts
Mentioned: 159 Post(s)
Tagged: 1 Thread(s)
On the FR-S on stock suspension I never had an issue after adding the front sway bar, alignment and sticky tires it transformed the car without basically doing anything on track and street. That setup was by far one of the best. Almost equal to many of the guys running coilovers in autox.
__________________
Dezoris is offline   Reply With Quote
The Following User Says Thank You to Dezoris For This Useful Post:
SkAsphalt (09-16-2013)
Old 09-16-2013, 06:17 PM   #9
SkAsphalt
Ridge Racerrrrrrrrr
 
SkAsphalt's Avatar
 
Join Date: Jul 2012
Drives: 2013 Scion FR-S, 2004 Toyota Coroll
Location: Regina, Sk
Posts: 3,516
Thanks: 5,786
Thanked 1,363 Times in 954 Posts
Mentioned: 37 Post(s)
Tagged: 1 Thread(s)
Garage
The only time I notice "dip" is because I (myself) bob forward) with the car, then again I am 6'4 so I am at the very top of my seat. I honestly think just a better seat belt/seats would change how the car feels for me
__________________
SkAsphalt is offline   Reply With Quote
Old 09-16-2013, 06:30 PM   #10
EAGLE5
Dismember
 
EAGLE5's Avatar
 
Join Date: Mar 2013
Drives: 2013 Red Scion FR-S
Location: Castro Valley
Posts: 5,562
Thanks: 2,153
Thanked 4,002 Times in 2,157 Posts
Mentioned: 43 Post(s)
Tagged: 1 Thread(s)
Garage
If you were going to put BRZ springs in the front and FRS springs in the back, which set of dampers would you use, the BRZ or FRS ones, and where?
EAGLE5 is offline   Reply With Quote
 
Reply


Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
full nose mask gts 86? 86CH Cosmetic Maintenance (Wash, Wax, Detailing, Body Repairs) 34 03-31-2013 04:00 AM
Clear plastic front/nose protection yankeelawdog Cosmetic Modification (Interior/Exterior/Lighting) 2 01-21-2013 03:52 PM
Don't pick your nose while driving your FR-S WithNolock Scion FR-S / Toyota 86 GT86 General Forum 28 07-28-2012 05:12 AM
Ugh, curbed the nose a little... Rob_g CANADA 12 06-20-2012 08:01 PM
How to Save 25lbs. off the Nose of your FT86 in 5 Minutes JRitt Engine, Exhaust, Bolt-Ons 8 06-20-2012 06:32 PM


All times are GMT -4. The time now is 08:35 AM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2025, vBulletin Solutions Inc.
User Alert System provided by Advanced User Tagging v3.3.0 (Lite) - vBulletin Mods & Addons Copyright © 2025 DragonByte Technologies Ltd.

Garage vBulletin Plugins by Drive Thru Online, Inc.