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Old 03-30-2009, 08:51 PM   #1
JDMFLCL
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Default Are these allowed? (AutoX question)

I'm wondering on the legality of these two components in regards to Street modified

1.) The cusco front Type 2 Lower Arm bar which is the 4 point unit.
2.) Cusco Trunk Power Brace

Any help is much appreciated
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Old 03-30-2009, 09:35 PM   #2
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nope....puts you straight to prepared class
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Old 03-31-2009, 12:42 AM   #3
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thanks for the help

i assume the same goes for fender braces? regardless if its just an oem replacement style one, or the triangulation kind.

And then, i guess while we are at it, the cusco subframe brace to which the rear diffuser mounts to?
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Old 03-31-2009, 12:52 AM   #4
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If they don't say it's allowed, it's not allowed. The Rulebook is both your best friend, and your worst enemy.
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Old 03-31-2009, 01:05 AM   #5
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i'm reading the rule book

and i don't see what the issue would be with a subframe brace as its just going between the 2 sides of the subframe.

the fender braces are illegal though.

Help on the cusco subframe brace?
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Old 03-31-2009, 10:40 AM   #6
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Quote:
Originally Posted by JDMFLCL View Post
i'm reading the rule book

and i don't see what the issue would be with a subframe brace as its just going between the 2 sides of the subframe.

the fender braces are illegal though.

Help on the cusco subframe brace?
Rule 15.2.E - specifically #2 and #5
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Old 03-31-2009, 10:51 AM   #7
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care to elaborate

i don't have the pdf.

I assume this is the worst news for the straight across subframe brace?

its just attaches @ 1 point on each side.

its this one

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Old 03-31-2009, 11:07 AM   #8
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Quote:
Originally Posted by JDMFLCL View Post
care to elaborate

i don't have the pdf.

I assume this is the worst news for the straight across subframe brace?

its just attaches @ 1 point on each side.

its this one

I thought we were still talking about the FRONT subframe brace (aka H-brace) and responded based on that.

I still think that rear brace is illegal based on the same rule...only Longitudinal braces are explicitly allowed.
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Old 03-31-2009, 11:25 AM   #9
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Default

how about the brace like the cusco type 1 or that stock STI brace that goes just straight across like an underside strut bar.

clarified on the attachment thing, not really a big deal to take off.

so i take it as "SFC"s these arent allowed per #5

but they are as close to a underside strut bar as exists....do they count as that?

Last edited by JDMFLCL; 03-31-2009 at 11:39 AM.
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Old 03-31-2009, 11:39 AM   #10
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Quote:
Originally Posted by JDMFLCL View Post
care to elaborate

i don't have the pdf.


This will help. It'll help you will all your Solo Rules Questions.

Remember to chant this mantra:
If the rules do not specifically authorize a modification, it is not permitted.
If the rules do not specifically authorize a modification, it is not permitted.
If the rules do not specifically authorize a modification, it is not permitted.

Do not try to read between the lines. There's no "between". There's no "spirit of the rules". The rules are VERY clear on what is allowed. Everything else is NOT.
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Old 03-31-2009, 11:39 AM   #11
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A bar that goes from one side of the car to the other, and only attaches on 1 point at either side of the car should be legal in SM. It's legal in SP and ST.
-N
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Old 03-31-2009, 11:53 AM   #12
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alright i'm totally confused at this point, i read the rules (15) , i read the next set of rules(16) that contradicted the first set of rules....i need to talk to someone physical. Searching has done nothing as the thread's ive come up upon all turned into flame wars.

i did clarify the front end though, a front tie bar is allowed since it connects the front 2 suspension pickup points. Still absolutely clueless on the rears, but my guess is a resounding no at this point.

whats the difference between this...a front arm bar



and this a Front tie bar


because truth be told they look almost identical to me

i take it #2 is legal because it ties the suspension pickup points together ala strut tower bar, whereas the #1 is tieing together the SF which is a no no unless longitudinally.

Last edited by JDMFLCL; 03-31-2009 at 12:06 PM.
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Old 03-31-2009, 12:07 PM   #13
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Quote:
Originally Posted by JDMFLCL View Post
i take it #2 is legal because it ties the rear suspension pickup points together ala strut tower bar, whereas the #1 is tieing together the SF...
Yep, It's as simple as that.
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Old 03-31-2009, 12:15 PM   #14
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as for the rear subframe brace....it mounts in the same mounting position as the Rear sway bar.....does that help its classification?

would it fall under the "RSB" classification?

it goes pretty much

crossmember-subframe mount-plate-swaybar mount
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Old 03-31-2009, 01:03 PM   #15
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Quote:
Originally Posted by JDMFLCL View Post
as for the rear subframe brace....it mounts in the same mounting position as the Rear sway bar.....does that help its classification?

would it fall under the "RSB" classification?

it goes pretty much

crossmember-subframe mount-plate-swaybar mount
Do the rules state you can run a brace between the swaybar mounts?

If the rules do not specifically authorize a modification, it is not permitted.
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Old 03-31-2009, 01:28 PM   #16
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Quote:
Originally Posted by 68Cadillac View Post
Do the rules state you can run a brace between the swaybar mounts?

If the rules do not specifically authorize a modification, it is not permitted.

they specifically state you can run a cross chassis brace if it mounts to the suspension pickup points ala a normal strut bar/ hence why the tie rod bar is ok, and i figured since the swaybar/rear subframe brace bar do likewise on the rear...same deal.
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Old 03-31-2009, 01:34 PM   #17
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Yes or No, Do the rules state you can run a brace between the swaybar mounts?
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Old 03-31-2009, 01:39 PM   #18
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Quote:
Originally Posted by JDMFLCL View Post
they specifically state you can run a cross chassis brace if it mounts to the suspension pickup points ala a normal strut bar/ hence why the tie rod bar is ok, and i figured since the swaybar/rear subframe brace bar do likewise on the rear...same deal.
The rear subframe brace goes from one swaybar pickup point to the other? If the brace connects between the inboard sides of that lateral links or suspension arms, I think it would count as suspension pickup points. I don't know why it would connect to the sway bar mounts though, or am I missing something? Do you have a picture of it installed?
-N
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Old 03-31-2009, 01:42 PM   #19
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Quote:
Originally Posted by JDMFLCL View Post
alright i'm totally confused at this point, i read the rules (15) , i read the next set of rules(16) that contradicted the first set of rules....i need to talk to someone physical. Searching has done nothing as the thread's ive come up upon all turned into flame wars.

i did clarify the front end though, a front tie bar is allowed since it connects the front 2 suspension pickup points. Still absolutely clueless on the rears, but my guess is a resounding no at this point.

whats the difference between this...a front arm bar



and this a Front tie bar


because truth be told they look almost identical to me

i take it #2 is legal because it ties the suspension pickup points together ala strut tower bar, whereas the #1 is tieing together the SF which is a no no unless longitudinally.

The first bar pictured attaches to the rear control arm mounts.

The second bar pictured attaches the subframe together.

Based on what you stated about tying suspension pickups together being legal than bar one should be fine. Bar two is out because it only attaches to the subframe.

Both of those bars installed together pretty much equal the H-brace.
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Old 03-31-2009, 01:42 PM   #20
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product description from JSC

"The Cusco WRX/STi rear subframe brace joins both sides of the rear subframe to reduce flex and movement associated with larger diameter swaybars and other rear-suspension components. It is designed to bolt under the stock swaybar mounts, it will NOT fit with any afermarket swaybars that come with upgraded mounts (i.e. Hotchkis, Cobb, and Perrin) and will improve feel and traction by reducing unwanted flex. With some additional components, this brace will allow for installation of the OEM 06 STi rear diffuser."

i see so i got it mixed up, so its the type 1 bar i want.
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Old 03-31-2009, 02:24 PM   #21
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Those bars aren't going to make a difference in your autocross times. Save your money and buy better tires.
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Old 03-31-2009, 02:32 PM   #22
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I think he wants it so he can have the super cool sti diffuser.
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Old 03-31-2009, 02:34 PM   #23
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yeah kinda... i'll admit it somewhat because of the nice aesthetic (widebody wingless...completes the look) + buttdyno chassis stiffening.

i ordered some 255/40/17 Federal RS-R's to learn on this year, and hopefully sooner or later, graduate to R comps (prob after two season).

ugh i feel ricey, prob should just stick with the original plan and upgrade from a 20mm to a 22mm RSB.

the more i read, the more it seems that my big swaybars negate any real gain these would do.

Last edited by JDMFLCL; 03-31-2009 at 02:50 PM.
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Old 03-31-2009, 03:01 PM   #24
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Quote:
Originally Posted by JDMFLCL View Post




product description from JSC

"The Cusco WRX/STi rear subframe brace joins both sides of the rear subframe to reduce flex and movement associated with larger diameter swaybars and other rear-suspension components. It is designed to bolt under the stock swaybar mounts, it will NOT fit with any afermarket swaybars that come with upgraded mounts (i.e. Hotchkis, Cobb, and Perrin) and will improve feel and traction by reducing unwanted flex. With some additional components, this brace will allow for installation of the OEM 06 STi rear diffuser."

i see so i got it mixed up, so its the type 1 bar i want.
Well the two bars I were talking about were for the front of the vehicle. This one is in the rear. Which end of the car do you want to brace?
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Old 03-31-2009, 03:08 PM   #25
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i was talking about both of them, but i resolved the front end situation, now im just focusing on the rear
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