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SCCA Autocross Rules Changes

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Old Oct 26, 2005, 06:34 AM
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SCCA Autocross Rules Changes

Looks like unlimited boost for next year in SP classes? But the Evo and STI are in BSP if I am not mistaken. In addition, is water injection now illegal? I thought it was legal last year. That could limit the max boost some people are running.

STREET PREPARED CATEGORY
- The proposal to move the Fiat and
Bertone X-1/9 from DSP to FSP has been
withdrawn.
- The following rule change proposal, previously
published in the August Fastracks
and effective 1/1/2006, has been recommended
to the BOD: Replace the contents
of 15.10.C with the following:
"C. Induction allowances are as follows:
1. Carburetors, fuel injection, and
intake manifolds are unrestricted.
Alternate throttle linkage and connections
to facilitate installation of allowed induction
systems are permitted, but may serve no
other purpose. If an induction system item
is allowed to be removed and its original
mounting bracket can be removed by simply
unbolting it, the bracket may be
removed as well.
2. Except for standard parts as defined
in these rules, the external use while on
course of liquids, ice, dry ice, refrigeration
systems, vaporized compressed gases, etc.
to reduce the temperature of the intake air
charge is prohibited.
3. As utilized only on engines originally
equipped with forced induction, induction
charge heat exchangers (known as "intercoolers"
or "charge air coolers (CACs)") are
unrestricted in size and configuration. Airto-
air CACs and radiators for air-to-liquid
CACs must be cooled only by the atmosphere,
except for standard parts. Body
panels, fascias, or structural members may
not be cut or altered to facilitate CAC
installation.
4. Turbochargers and/or superchargers
("forced induction") may not be added,
changed, or modified. On vehicles originally
equipped with forced induction:
a) No hardware changes or alterations
to turbocharger(s) or supercharger(s), in size
or number, are permitted. Turbochargers
or superchargers may be updated/backdated
only in conjunction with the accompanying
complete engine unit.
b) No changes are allowed to waste
gate(s) size, number, or location. No
changes are allowed to variable-geometryturbine
(VGT) hardware.
c) No changes are allowed to supercharger
drive system pulleys. Belt tensioners
may be added/changed to reduce belt slip.
d) No changes are permitted to blow-off/pop-offvalves.
e) Compressor bypass valves (CBVs) may be updated/
backdated independently of the other components of a
forced induction system.
f) Boost regulation systems, either electronic or
mechanical, and electronic fuel cuts referencing boost pressure
may be altered or modified except as prohibited herein.
Boost pressure changes resulting from authorized changes are
permitted."
- The following class change proposal, previously published
in the July Fastracks, has been recommended to the BOD:
Move the following cars from ESP to BSP: Mitsubishi Lancer
Evo 8, Subaru WRX Sti.
Old Oct 26, 2005, 06:41 AM
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Woot! Boost in SP
Old Oct 26, 2005, 08:17 AM
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It kind of seems as though they are making the boost control rule changes out to be the impetus for the AWD/turbo move to BSP. These changes make Daddio's car an "almost legal" BSP car.....

Per the UD/BD can the 10.5 hotside turbo on the '05's be used on an 03/04? The engine unit remains the same, the biggest changes were the addition of ACD/LSD and those are drivetrain changes.
Old Oct 26, 2005, 08:28 AM
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Originally Posted by kekek
It kind of seems as though they are making the boost control rule changes out to be the impetus for the AWD/turbo move to BSP. These changes make Daddio's car an "almost legal" BSP car.....

Per the UD/BD can the 10.5 hotside turbo on the '05's be used on an 03/04? The engine unit remains the same, the biggest changes were the addition of ACD/LSD and those are drivetrain changes.
From my understanding, yes. The 10.5 is not part of any "special factory or dealer package". It is on all 05' models.
Old Oct 26, 2005, 08:32 AM
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Originally Posted by kekek
Per the UD/BD can the 10.5 hotside turbo on the '05's be used on an 03/04? The engine unit remains the same, the biggest changes were the addition of ACD/LSD and those are drivetrain changes.
I was thinking the exact same thing. Looks like a boost controller will be on my wish list before next season.
Old Oct 26, 2005, 08:34 AM
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You can do whatever to the boost, yet you still have to use the original BOV. That won't work out well.
Old Oct 26, 2005, 08:42 AM
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Originally Posted by nutrulz
You can do whatever to the boost, yet you still have to use the original BOV. That won't work out well.
Can you update to the Evo IX BOV? The USDM one is now exactly like the JDM one, and it holds boost much better.
Old Oct 26, 2005, 08:45 AM
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Originally Posted by kekek
It kind of seems as though they are making the boost control rule changes out to be the impetus for the AWD/turbo move to BSP. These changes make Daddio's car an "almost legal" BSP car.....

Per the UD/BD can the 10.5 hotside turbo on the '05's be used on an 03/04? The engine unit remains the same, the biggest changes were the addition of ACD/LSD and those are drivetrain changes.
The EVO and STI have already been bumped to BSP in the december fasttrack.

I researched the turbo, and upgrading the hotside is not enough. the turbine assembly has a different part number. That said, all you need is a complete turbo, the long block engine assembly is the same.

To do the update backdate properly, you may also need the '05 ECU as a technicality.

Last edited by chrisw; Oct 26, 2005 at 08:48 AM.
Old Oct 26, 2005, 08:46 AM
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Originally Posted by urBan_dK
Can you update to the Evo IX BOV? The USDM one is now exactly like the JDM one, and it holds boost much better.
"e) Compressor bypass valves (CBVs) may be updated/
backdated independently of the other components of a
forced induction system."

According the new rules, you can update to the IX.


Dave
Old Oct 26, 2005, 09:09 AM
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Originally Posted by chrisw
The EVO and STI have already been bumped to BSP in the december fasttrack.

I researched the turbo, and upgrading the hotside is not enough. the turbine assembly has a different part number. That said, all you need is a complete turbo, the long block engine assembly is the same.

To do the update backdate properly, you may also need the '05 ECU as a technicality.
The move to BSP and the open boost control has only been "recommended" to the BOD. Having said that, 99% of all recommendations are usually approved. Needing the 05' ECU would be stretching it, unless they see that as part of the "engine unit". I wouldn't think so, but you never know. Clarification from Doug Gill may be necessary.

Dave
Old Oct 26, 2005, 09:22 AM
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Dave,
I would think the UD/BD for the CBV will only be legal if the IX is listed on the same line as the current models. I think the '05 ECU shouldn't be required either, especially since it is legal to change parameters within (dynoflash, etc).

ChrisW,
I was thinking the same thing about the turbo...entire assembly legal only, 10.5 hotside by itself not legal. And it looks like I have to cut some new vinyl...either some B's or SM's....
Old Oct 26, 2005, 09:26 AM
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What about water injection? It looks like it is now excluded?

2. Except for standard parts as defined
in these rules, the external use while on
course of liquids, ice, dry ice, refrigeration
systems, vaporized compressed gases, etc.
to reduce the temperature of the intake air
charge is prohibited.
Old Oct 26, 2005, 09:33 AM
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I got bumped to SM for a carbon fiber hood. It weighs 2 lbs less than the stocker.

Can someone tell me what class this would be next year...

Xede (electronically raised boost 2 psi)
10.5 Hotside
Cams
Cam gears
CF hood
NO susppension tire changes from stock (higher than advan tread wear)
Greddy BOV
Full Exhaust with muffler - no cat
Tubular Exhaust Manifold



I am thinking SM if I do all that.
Old Oct 26, 2005, 09:40 AM
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I just learned my bit for the day. thank you
Old Oct 26, 2005, 09:41 AM
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Originally Posted by Cajun Power
I got bumped to SM for a carbon fiber hood. It weighs 2 lbs less than the stocker.

Can someone tell me what class this would be next year...

Xede (electronically raised boost 2 psi)
10.5 Hotside
Cams
Cam gears
CF hood
NO susppension tire changes from stock (higher than advan tread wear)
Greddy BOV
Full Exhaust with muffler - no cat
Tubular Exhaust Manifold



I am thinking SM if I do all that.
Yea with the cams you will be in SM. Why not get some stickier tires? Even with all those mods you will probably get spanked by evos in AS running r compounds...


On a side note, kekek are you running at waterbury this weekend? I know its not bristol () but its one last time to to race before the white stuff hits the ground.


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