SCCA Solo C Street Discussion - Page 98 - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

Quentin · 08-14-2014, 03:55 PM

Weight gain will be marginal. Driver weight differences will be on the same order as the weight added by the aero kit. The whole bumper cover on my old 2.5RS was probably 10lbs or so. Exhaust may be lighter than the standard one to cancel out the difference (I doubt it, but who knows.)

renfield90 · 08-14-2014, 04:38 PM

Given the limited numbers and extra cost, no way the RS 1.0 stays classed with the base model. The SAC hasn't forgotten the lessons from the MSR and Z0K so quickly. And if they have, well, TTD looks inviting...

BRZ21 · 08-15-2014, 11:58 AM

Quote:

Originally Posted by edj

no. only factory options available in the USA.

What about trd springs? I'm pretty sure they're an option now.

If they are, are they allowed?

mrazny · 08-15-2014, 12:35 PM

Quote:

Originally Posted by BRZ21

What about trd springs? I'm pretty sure they're an option now.

If they are, are they allowed?

no, then no, also no

Jawnathin · 08-15-2014, 03:22 PM

Quote:

Originally Posted by Laloosh

I then remembered that I can get some extra play out of the top of the sturt by loosening the 3 bolts and jacking up the hub. I took measurements before and after and I was able to gain an extra .2-.3 of negative camber on the front per side. Final camber settings are -1.2 Drivers side and -1.4 Passenger Side. Still on the stock shocks and stock bars.

Would this have the same effect as pushing the top of the strut inward while the 3 bolts on the top are tightened?

renfield90 · 08-15-2014, 04:27 PM

Quote:

Originally Posted by Jawnathin

Would this have the same effect as pushing the top of the strut inward while the 3 bolts on the top are tightened?

Yes, but how much weight can you realistically exert on your own? Using a jack allows you to leverage the weight of the car and hold it in place while you tighten.

Laloosh · 08-15-2014, 04:42 PM

Quote:

Originally Posted by renfield90

Yes, but how much weight can you realistically exert on your own? Using a jack allows you to leverage the weight of the car and hold it in place while you tighten.

I agree 100%

Jawnathin · 08-15-2014, 08:28 PM

Quote:

Originally Posted by renfield90

Yes, but how much weight can you realistically exert on your own? Using a jack allows you to leverage the weight of the car and hold it in place while you tighten.

Well, if you have two people doing the install, one can push in while the other tightens the nuts.

I figure the camber gained will be based upon the amount of play in the holes where the top hat studs go. Even if you can apply 500 lbs of force vs 50lbs, as long as the studs on the top hat are as close inward as the mounting holes will allow, that'll be your max camber gained.

If you think differently, I'd like to understand that. Just trying to see what difference it'll be from what I've done already using two people. Not hard to loosen the 3 nuts and use the jack if its better.

xwd · 08-16-2014, 11:21 AM

I tested those methods on my WRX which has the same front suspension. There are no bushings or anything so having a friend push is just as good as using a jack, the jack just lets you do it by yourself.

Agree on the RS 1.0, I'm not sure they'll even class it and if they do it'll get stuck in BS.

renfield90 · 08-17-2014, 12:31 AM

Quote:

Originally Posted by Jawnathin

Well, if you have two people doing the install, one can push in while the other tightens the nuts.

I figure the camber gained will be based upon the amount of play in the holes where the top hat studs go. Even if you can apply 500 lbs of force vs 50lbs, as long as the studs on the top hat are as close inward as the mounting holes will allow, that'll be your max camber gained.

If you think differently, I'd like to understand that. Just trying to see what difference it'll be from what I've done already using two people. Not hard to loosen the 3 nuts and use the jack if its better.

The real question becomes "is 50 pounds truly enough force to move that strut to the ultimate max camber position?" The answer to the question is irrelevant if you're using 500 pounds. Every fraction of a millimeter matters here and I don't like leaving anything on the table.

Kido1986 · 08-17-2014, 06:21 PM

I hope I can drive somewhere close to what I did at today's private pre-nat TnT. My car is on fire

stevo874 · 08-17-2014, 09:27 PM

For those who have run the 235/45-17 Dunlop ZII. What kind of tire pressures were you running?

bimmer635csi · 08-17-2014, 09:33 PM

Quote:

Originally Posted by stevo874

For those who have run the 235/45-17 Dunlop ZII. What kind of tire pressures were you running?

I ran them on my GTI, does that count?

I'm running that size, but different brand of tire (and also 225s up front), with only crash bolts. 35.5 psi front and 36 rear felt really nice last time out.

marc615243 · 08-17-2014, 09:37 PM

Quote:

Originally Posted by stevo874

For those who have run the 235/45-17 Dunlop ZII. What kind of tire pressures were you running?

I just got a set of these and am curios as well, I am new to autocrossing so I am trying to absorb as much info as I can before each run

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08-14-2014, 03:55 PM	#1359
Quentin Senior Member Join Date: Dec 2011 Drives: ‘16 4Runner, ‘19 Corolla HB Location: Hurricane, WV Posts: 1,233 Thanks: 685 Thanked 813 Times in 435 Posts Mentioned: 4 Post(s) Tagged: 0 Thread(s)	Weight gain will be marginal. Driver weight differences will be on the same order as the weight added by the aero kit. The whole bumper cover on my old 2.5RS was probably 10lbs or so. Exhaust may be lighter than the standard one to cancel out the difference (I doubt it, but who knows.)

08-14-2014, 04:38 PM	#1360
renfield90 The Stig's German cousin Join Date: Mar 2013 Drives: 2013 FR-S Location: Tempe, AZ Posts: 1,066 Thanks: 140 Thanked 511 Times in 340 Posts Mentioned: 8 Post(s) Tagged: 2 Thread(s)	Given the limited numbers and extra cost, no way the RS 1.0 stays classed with the base model. The SAC hasn't forgotten the lessons from the MSR and Z0K so quickly. And if they have, well, TTD looks inviting...

08-16-2014, 11:21 AM	#1367
xwd Senior Member Join Date: Feb 2012 Drives: 2013 DGM Subaru BRZ (Subie #9) Location: ATL, US Posts: 2,667 Thanks: 123 Thanked 860 Times in 552 Posts Mentioned: 32 Post(s) Tagged: 0 Thread(s)	I tested those methods on my WRX which has the same front suspension. There are no bushings or anything so having a friend push is just as good as using a jack, the jack just lets you do it by yourself. Agree on the RS 1.0, I'm not sure they'll even class it and if they do it'll get stuck in BS.

08-17-2014, 09:27 PM	#1370
stevo874 Member Join Date: Oct 2013 Drives: 2013 BRZ, 1994 Miata Location: nw indiana Posts: 27 Thanks: 8 Thanked 10 Times in 5 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	For those who have run the 235/45-17 Dunlop ZII. What kind of tire pressures were you running?

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