SCCA classification help
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Nordschleife Master
Joined: Mar 2006
Posts: 8,695
Likes: 136
SCCA classification help
Ok I am considering an event with Tri-State Sports Car Club this weekend (IL/IN/WI regional club). They run SCCA classifications.
I downloaded the 346 page rulebook... and then LOL'd. I think I'd rather read a bunch of legal filings. Is there a trick or something to finding my way through that thing? Or better yet... can somebody help me classify my car? I usually only AX with marque-specific clubs, so I'm always "Class X" for non-PCA events (which makes it simple...)
'86 944 Turbo
Bilstein Cup shocks/struts
450lb/350lb springs w/stock torsion bars
Weltmeister sway bars
18x8 (235's) and 18x10 (285's) wheels and tires
944 S2 transmission w/Guard diff
Rogue Tuning M-Tune (MAF conversion)
Manual boost controller
T04E 50-trim turbo
3" exhaust
Rollbar
Recaro SRD seats
I can't find anything that mentions allowing turbo mods, they're goofy about modifying boost levels, etc. My best guess is SSM?
I downloaded the 346 page rulebook... and then LOL'd. I think I'd rather read a bunch of legal filings. Is there a trick or something to finding my way through that thing? Or better yet... can somebody help me classify my car? I usually only AX with marque-specific clubs, so I'm always "Class X" for non-PCA events (which makes it simple...)
'86 944 Turbo
Bilstein Cup shocks/struts
450lb/350lb springs w/stock torsion bars
Weltmeister sway bars
18x8 (235's) and 18x10 (285's) wheels and tires
944 S2 transmission w/Guard diff
Rogue Tuning M-Tune (MAF conversion)
Manual boost controller
T04E 50-trim turbo
3" exhaust
Rollbar
Recaro SRD seats
I can't find anything that mentions allowing turbo mods, they're goofy about modifying boost levels, etc. My best guess is SSM?
Burning Brakes
Joined: Jan 2002
Posts: 1,012
Likes: 223
From: Huntsville, AL
Technically, no, if that is different or modified turbo hardware. (I assume it is.) I think everything else is legal for SP, your engine management/intake etc. It's the turbo hardware itself that throws you out. It is not quite true that boost levels can't be changed.
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Burning Brakes
Joined: Jun 2006
Posts: 793
Likes: 58
From: Here
Great catch. I don't know my SP rules very well apparently.
So if I read that right, your MBC is ok, but the big turbo is not. Next step up is SSM - according to the bottom of pg107 that's where a 944 goes.
The SCCA rulebook is indeed a mess if you have a car and want to see where it fits. If you're starting with a stock car, have a class you want to build for, and want to know what you are allowed to do, it works much better.
4. Turbochargers and/or superchargers (forced induction) may not
be added, changed, or modified (this does not allow ceramic coating
of turbochargers). 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-geometry turbine
(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-off valves.
e) Compressor bypass valves (CBVs) are considered part of the
air intake system and may be added, replaced, or 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.
be added, changed, or modified (this does not allow ceramic coating
of turbochargers). 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-geometry turbine
(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-off valves.
e) Compressor bypass valves (CBVs) are considered part of the
air intake system and may be added, replaced, or 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 SCCA rulebook is indeed a mess if you have a car and want to see where it fits. If you're starting with a stock car, have a class you want to build for, and want to know what you are allowed to do, it works much better.
Drifting
Joined: Jan 2009
Posts: 3,042
Likes: 84
From: Chesapeake, VA
I put together a classing guide for my local club (SCCA classing) intended to at least help give people a place to start looking:
http://www.tidewatersportscarclub.co...=92&Itemid=282
http://www.tidewatersportscarclub.co...=92&Itemid=282
