Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community - FT86CLUB

Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community - FT86CLUB (https://www.ft86club.com/forums/index.php)
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-   -   ..Starting the quest for total neutrality. (https://www.ft86club.com/forums/showthread.php?t=94860)

Calum 09-28-2015 07:34 PM

I just measured and inspected. I've got about 2500-3000 Kms on this setup. (Revelent stuff; MPSS, 2.5 camber, and 5.5 degs caster, 0 toe). I'm down a 32 on the inside vs the outside, but there's no gum balling or anything that would indicate too much heat.

I'm not trying to flame, just trying to add info to the subject.

JEDI 09-28-2015 07:43 PM

I think out of the box this car is great. I did notice my 13 stock FR-S tended to or was easier to slide around compared to my RS1.0, and the only difference between the two cars mechanically is the TRD springs as far as I know. Anybody know spring rate for the TRD's? Where's it better to start? Tires, Springs, or alignment? When it comes to chassis tuning. Not trying to thread jack. I cant wait to do some mountain driving with some sticky tires.

cdrazic93 09-29-2015 12:06 AM

Quote:

Originally Posted by Racecomp Engineering (Post 2390793)
A lot of it will come down to alignment and making the most of the tires as you can.

Quote:

Originally Posted by mav1178 (Post 2390854)
GOSPEL RIGHT HERE.

Praise jebus :bow:

Racecomp Engineering 09-29-2015 03:07 PM

Quote:

Originally Posted by Calum (Post 2404129)
I just measured and inspected. I've got about 2500-3000 Kms on this setup. (Revelent stuff; MPSS, 2.5 camber, and 5.5 degs caster, 0 toe). I'm down a 32 on the inside vs the outside, but there's no gum balling or anything that would indicate too much heat.

I'm not trying to flame, just trying to add info to the subject.

You could use a little more caster FYI.

- Andy

chaoskaze 09-29-2015 03:32 PM

Quote:

Originally Posted by JEDI (Post 2404138)
I think out of the box this car is great. I did notice my 13 stock FR-S tended to or was easier to slide around compared to my RS1.0, and the only difference between the two cars mechanically is the TRD springs as far as I know. Anybody know spring rate for the TRD's? Where's it better to start? Tires, Springs, or alignment? When it comes to chassis tuning. Not trying to thread jack. I cant wait to do some mountain driving with some sticky tires.


It's different, they changed frs damper to closer to brz setting starting 2015.

strat61caster 09-29-2015 04:00 PM

Quote:

Originally Posted by Racecomp Engineering (Post 2405030)
You could use a little more caster FYI.

- Andy

Curious, what performance benefit is there to increasing caster on this car? I just moved mine up with the Raceseng CasCams from 5.9 to I suppose 6.9 degrees, the steering feels heavier but I don't like it, it almost feels like an artificial weight with no benefit, I'll drive it hard before I go back to be sure but so far I'm not a fan.

Racecomp Engineering 09-29-2015 04:10 PM

Quote:

Originally Posted by strat61caster (Post 2405124)
Curious, what performance benefit is there to increasing caster on this car? I just moved mine up with the Raceseng CasCams from 5.9 to I suppose 6.9 degrees, the steering feels heavier but I don't like it, it almost feels like an artificial weight with no benefit, I'll drive it hard before I go back to be sure but so far I'm not a fan.

Basically, as you turn the steering wheel your outside tire loses negative camber (even without body roll). More caster limits this effect. It's noticeable mostly in tighter corners with lots of steering input.

Steering feel does get a little weird with higher values. Some really don't like it, other's don't mind it.

- Andy

Calum 09-29-2015 04:11 PM

Quote:

Originally Posted by Racecomp Engineering (Post 2405030)
You could use a little more caster FYI.

- Andy

You're killing me Andy.

I have the whiteline caster bushings. I'm honestly not sure what finally the number is, but I think it was ~5.5 deg.

I've replaced my strut mounts 13 times. :suicide: I have no desire to do it again. At this point unless the extra camber and caster from an adjustable mount is going to give free felatio every time I get in the car, I'm gonna stay with the group n mounts.

How much were your new mounts again?

drewbot 09-29-2015 04:22 PM

With the exchange rate the way it is, WAY too much $$$ now.

-Me loving 7.0 caster

strat61caster 09-29-2015 04:35 PM

Quote:

Originally Posted by Racecomp Engineering (Post 2405139)
Basically, as you turn the steering wheel your outside tire loses negative camber (even without body roll). More caster limits this effect. It's noticeable mostly in tighter corners with lots of steering input.

Steering feel does get a little weird with higher values. Some really don't like it, other's don't mind it.

- Andy

I'll stick with it for awhile, thanks.

Quote:

Originally Posted by Calum (Post 2405140)
You're killing me Andy.

I have the whiteline caster bushings. I'm honestly not sure what finally the number is, but I think it was ~5.5 deg.

I want to say mine were at least 5.5 or 5.9 OEM everything, I think you might be misremembering...

Racecomp Engineering 09-29-2015 06:39 PM

Quote:

Originally Posted by Calum (Post 2405140)
You're killing me Andy.

I have the whiteline caster bushings. I'm honestly not sure what finally the number is, but I think it was ~5.5 deg.

I've replaced my strut mounts 13 times. :suicide: I have no desire to do it again. At this point unless the extra camber and caster from an adjustable mount is going to give free felatio every time I get in the car, I'm gonna stay with the group n mounts.

How much were your new mounts again?

:lol: $419.

Maybe try that 16mm rear bar first.

Quote:

Originally Posted by strat61caster (Post 2405175)
I want to say mine were at least 5.5 or 5.9 OEM everything, I think you might be misremembering...

I agree, that seems a bit low if you have the WL caster bushings.

- Andy

mav1178 09-29-2015 06:56 PM

Quote:

Originally Posted by Racecomp Engineering (Post 2405139)
Steering feel does get a little weird with higher values. Some really don't like it, other's don't mind it.

One other possible drawback is overworking the onboard power steering, increased caster does put more stress in the steering system.

Given that a handful of us were able to overheat the electrical power steering by simply running R-comps, it may make it worse.

-alex

strat61caster 09-29-2015 07:56 PM

Quote:

Originally Posted by mav1178 (Post 2405383)
One other possible drawback is overworking the onboard power steering, increased caster does put more stress in the steering system.

Given that a handful of us were able to overheat the electrical power steering by simply running R-comps, it may make it worse.

-alex

It definitely feels like I'm overworking the steering for no good reason, but that's probably just my mind making stuff up.


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