ITS
1. BMW 325i/is (2 & 4 door) (92-95), p. 18, change the specs to read as follows: Notes: Trunk mounted fuel cell with no larger capacity than
stock. 27mm SIR required and must comply with GTCS section 17.1.2.F.4.i.10.
2. Ford Contour V-6 (non-SVT) (1995), p. 18, change the specs to read as follows: Weight(lbs.): 2730.
3. Mazda RX-7 (13 (84-85), p. 19, change the specs to read as follows: Weight(lbs.): 2350.
4. Nissan/Datsun 260-Z (73-74), p. 20, change the specs to read as follows: Weight(lbs.): 2480.
5. Nissan/Datsun 280-Z (75-78), p. 20, change the specs to read as follows: Weight(lbs.): 2505.
6. Nissan/Datsun 280-ZX 2+2 (79-83), p. 20, change the specs to read as follows: Weight(lbs.): 2530.
7. Nissan/Datsun 280-ZX (79-83), p. 20, change the specs to read as follows: Weight(lbs.): 2530.
8. Nissan 200-SX V-6 (1987), p. 20, change the specs to read as follows: Weight(lbs.): 2725.
9. Nissan 300-ZX (84-88), p. 20, change the specs to read as follows: Weight(lbs.): 2725.
10. Nissan 300-ZX 2+2 (1986), p. 20, change the specs to read as follows: Weight(lbs.): 2725.
11. Porsche 924-S (86-88), p. 21, change the specs to read as follows: Weight(lbs.): 2575.
12. Porsche 944 (2V) (83-88), p. 21, change the specs to read as follows: Weight(lbs.): 2575.
13. Toyota Supra (82-85), p. 22, change the specs to read as follows: Weight(lbs.): 2750.
ITA
1. Acura Integra 1.6 (86-89), p. 23, change the specs to read as follows: Weight(lbs.): 2200.
2. Acura Integra (90-93), p. 23, change the specs to read as follows: Weight(lbs.): 2595.
3. Acura Integra (GS/LS/RS (3 door) (94-00), p. 23, change the specs to read as follows: Weight(lbs.): 2620.
4. BMW 318 (E36) (92-94), p. 23, change the specs to read as follows: Weight(lbs.): 2600.
5. BMW 318ti & Club Sport (1995), p. 23, change the specs to read as follows: Weight(lbs.): 2600.
6. BMW 318ti Sport (96-99), p. 23, change the specs to read as follows: Weight(lbs.): 2600.
7. BMW 325e/es (2 & 4 door) (84-87), p. 23, change the specs to read as follows: Weight(lbs.): 2550.
8. Honda Civic Si (88-91), p. 26, change the specs to read as follows: Weight(lbs.): 2250.
9. Honda CRX Si (88-91), p. 26, change the specs to read as follows: Weight(lbs.): 2250.
10. Mazda MX-5 / Miata (90-93), p. 27, change the specs to read as follows: Weight(lbs.): 2255.
11. Mazda Protégé LX (90-93), p. 27, change the specs to read as follows: Weight(lbs.): 2280.
12. Mazda Protégé ES (95-98), p. 27, change the specs to read as follows: Weight(lbs.): 2280.
13. Mazda RX-7 (12A) (79-85), p. 28, change the specs to read as follows: Weight(lbs.): 2280.
14. Mitsubishi Eclipse (95-98), p. 28, change the specs to read as follows: Weight(lbs.): 2600.
15. Nissan 240-SX / S13 (89-90), p. 28, change the specs to read as follows: Weight(lbs.): 2630.
16. Plymouth Laser / Eagle Talon / Mitsubishi Eclipse 2.0L, p. 29, change the specs to read as follows: Weight(lbs.): 2500.
17. Pontiac Fiero GT & Formula V-6 2.8 (1988), p. 29, change the specs to read as follows: Weight(lbs.): 2600.
February Addendum 2006 SPORTSCAR F-55
18. Toyota Celica GTS (86-88), p. 30, change the specs to read as follows: Weight(lbs.): 2500.
19. Toyota Corolla GTS (84-85), p. 30, correct the model years to 84-87.
20. Toyota Corolla GTS (86-89), p. 30, correct the model years to 88-92, change the specs to read as follows: Weight(lbs.): 2300.
21. Toyota MR-2 1.6L (85-89), p. 30, change the specs to read as follows: Weight(lbs.): 2270.
22. Volkswagen Jetta GLI (1991), p. 31, add the 92 model year.
ITB
1. Ford Mustang 2.3 (79-93), p. 34, change the specs to read as follows: Weight(lbs.): 2550.
2. Mazda MX-6 (88-91), p. 36, change the specs to read as follows: Weight(lbs.): 2530.
3. Toyota Celica III 2.4 (83-85), p. 40, change the specs to read as follows: Weight(lbs.): 2350.
4. Toyota Celica III GTS (83-85), p. 40, change the specs to read as follows: Weight(lbs.): 2425.
5. Volkswagen Rabbit GTI (83-84), p. 41, change the specs to read as follows: Weight(lbs.): 2080.
6. Volkswagen Scirocco II 8V (83-88), p. 41, change the specs to read as follows: Weight(lbs.): 2130.
Item 1. Effective 11/1/06, reclassify the ITB Plymouth Horizon 1.7 (1978-79) to ITC at 2,050 lbs.
Item 2. Effective 11/1/06, reclassify the ITB Plymouth Horizon TC3 1.7 (1979-80) to ITC at 2,110 lbs.
Item 3. Effective 11/1/06, reclassify the ITS Mazda MX-3 V-6 to ITA at 2,510 lbs
Item 4. Effective 11/1/06, reclassify the ITS Toyota Celica GT Coupe & Liftback (1989-93) to ITA at 2,590 lbs.
Originally posted by Matt Rowe@Jan 20 2006, 11:45 AM
First, I want to say congratulations and thank you to all the ITAC members for working on this. I think it's a big step forward.
Now for the second guessing.
Okay, so looking down the list of affected cars I have to ask. Did every currently classed car get run through the process? It appears that the list is biased to the cars that are either newer or more popular. Am I reading too much into things? Could this also be a case where the CRB selectively allowed/disallowed changes line by line? There were only 43 weight adjustments and 4 cars that were moved to a different group. Out of 300+ cars classsed I doubt those were the only changes needed, especially when the older cars are the ones more likely to be classed under different assumptions etc.
Again, thank you and please don't take these comments as overly critical. I'm just trying to understand IF there was any preference given to newer or popular cars and what the reasoning behind that might be.
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Originally posted by JeffYoung@Jan 20 2006, 12:04 PM
Andy, and everyone, thanks for the great work.
Am I reading this right -- no weight on the E36, but a bigger restrictor?
The 944s got the help they need. Hope that brings them out en masse.
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Originally posted by stevel@Jan 20 2006, 01:07 PM
Nice job Andy and all!
I think this is a step in the right direction and ITA is going to be awesome this year! Lots of different guys at the front and lots of close racing. Can't wait!
steve
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Originally posted by JeffYoung@Jan 20 2006, 11:28 AM
Andy, not griping at all, just trying to understand: why not adjust the weight?
A single make SIR seems against class-philosophy to me. Correcting the weight to where it should be -- just don't see the downside to that.
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GTCS 17.1.2.F.4.i.10. Single Inlet Restrictors
a. The intent of this rule is to have a sealed system from
the Restrictor to the Intake Ports of the Cylinder Head.
All of the air entering the Intake Ports shall pass through
the specified Restrictor. Modification or addition to any
part of the Intake System that allows the introduction of
air into the Intake Ports that has not passed through the
specified Restrictor is prohibited.
b. The Engine Air Intake System must be fitted with an
aluminum air restrictor. The Intake System is defined
as an assembly of parts, including but not restricted
to: the Restrictor, Restrictor Housing, Ducting, Filters,
Air Box, Velocity Stacks, Throttle Body, Carburetors,
Manifold and Manifold Gasket up to the Intake Ports on
the Cylinder Head.
c. The Restrictor must be round in shape. The maximum
ID of the Restrictor is listed on the vehicle’s spec line.
The Restrictor’s maximum ID must be maintained for a
minimum length of 3mm. Restrictor mounting/placement
within the intake system is free, but must allow
accessibility for measurement. It is acceptable to have
some minor disassembly of the intake system to provide
access to the Restrictor for measurement. Measurement
device and restrictor shall be similar temperatures when
used.
d. Sealing the Restrictor from its supply of air must cause
the engine to stop within 4 seconds. This check is to be
made at an engine speed of approximately 2500 rpm.
The sealed airbox must withstand this test. Pressure
sensors present inside the intake system must be
disconnected during this check.
e. All GTL cars that have either an IR or SIR size (restricted)
listed on their spec line shall utilize an SIR for National
competitions.