June 2007 FasTrack

[Paul]

http://www.scca.com/_FileLibrary/Fil...june-final.pdf

TECH BULLETINS

2. Street Modified: In Appendix A, Street Modified, paragraph 2 is clarified to read: “Turbocharged or supercharged versions
of all engines will be classified on the basis of adding 1.4 liters to the actual displacement.”
3. Prepared: In Appendix A, Prepared Class X, paragraph 9.a.2 is clarified to read: “Turbocharged or supercharged versions of
all engines will be classified on the basis of adding 1.4 liters to the actual displacement.”


Once again they underestimate the potential power of a turbo charged engine.

Which would you rather have, a 3.0L turbo or a 4.4L N/A ?

[C3]

Re: June 2007 FasTrack

http://www.scca.com/_FileLibrary/Fil...june-final.pdf

TECH BULLETINS

2. Street Modified: In Appendix A, Street Modified, paragraph 2 is clarified to read: “Turbocharged or supercharged versions
of all engines will be classified on the basis of adding 1.4 liters to the actual displacement.”
3. Prepared: In Appendix A, Prepared Class X, paragraph 9.a.2 is clarified to read: “Turbocharged or supercharged versions of
all engines will be classified on the basis of adding 1.4 liters to the actual displacement.”


Once again they underestimate the potential power of a turbo charged engine.

Which would you rather have, a 3.0L turbo or a 5.4L N/A ?

Wouldn't it be 4.4L NA?

[Paul]

Re: June 2007 FasTrack

Wouldn't it be 4.4L NA?

Yep, it would be... thanks for catching the typo.

[Fair!]

Re: June 2007 FasTrack

Wow, as if it wasn't fubar before... this is ridiculous!

[Paul]

Re: June 2007 FasTrack

http://www.scca.com/_FileLibrary/Fil...june-final.pdf

TECH BULLETINS

2. Street Modified: In Appendix A, Street Modified, paragraph 2 is clarified to read: “Turbocharged or supercharged versions
of all engines will be classified on the basis of adding 1.4 liters to the actual displacement.”
3. Prepared: In Appendix A, Prepared Class X, paragraph 9.a.2 is clarified to read: “Turbocharged or supercharged versions of
all engines will be classified on the basis of adding 1.4 liters to the actual displacement.”


Once again they underestimate the potential power of a turbo charged engine.

Which would you rather have, a 3.0L turbo or a 4.4L N/A ?

"Which would you rather have, a 3.0L turbo or a 4.4L N/A ?" Since the car would weigh 3010lbs they would both suck.


Class SM
Eligible Vehicles:
All sedans/coupes (models which were originally equipped with a
minimum of four seats and four factory seat belts).
Excluded Vehicles:
Porsche, all
Lotus, all
Nissan / Datsun Z car 2+2, (Pre ’90)
Honda CRX
MGB GT
Triumph, all
Minimum Weight Calculations:
All listed weights are without driver.
FWD: 1550 lbs + 125 lbs/liter
RWD: 1800 lbs + 200 lbs/liter
AWD: 1800 lbs + 275 lbs/liter
Cars with engine located behind driver: +25 lbs/liter
Regardless of the weight formulas above, no car will be required to
weigh more than 3100 lbs.

3.0L = 2400 (NA)
3.2L = 2440 (NA) (I think Vic runs this size, at least 350whp)
2.5L = 2873 (Turbo +1.4L) (current STi size)
2.0L = 2735 (Turbo +1.4L) (old WRX size, easy 350whp but with lag)

I guess the +1.4L rule isn't so bad after all.

[Paul]

Re: June 2007 FasTrack

Here is the SM2 breakdown:

Class SM2
Eligible Vehicles:
A - All two-seat cars not excluded below.
B - All SM eligible sedans/coupes excluded from SM.
C - All SM eligible vehicles.
Excluded Vehicles:
Lotus, all except Elise, Exige, and Esprit
Vehicles not meeting minimum weights
Minimum Weight Calculations:
All listed weights are without driver.
FWD: 1350lbs + 125 lbs/liter
RWD: 1600 lbs + 200 lbs/liter
AWD: 1600 lbs + 275 lbs/liter
Cars with engine located behind driver: +25 lbs/liter
Regardless of the weight formulas above, no car will be required to
weigh more than 2900 lbs.

3.0L = 2200 (NA)
3.2L = 2240 (NA)
2.5L = 2673 (Turbo +1.4L)
2.0L = 2535 (Turbo +1.4L)

What displacement is a 2 rotor wankle (13B) or 3 rotor wankle (20B)?

I wonder how they stack up in the turbo vs. NA weight arguement.

[Fair!]

Re: June 2007 FasTrack

I remember seeing the 13B rated as a 3.6L by some sanctioning bodies.

The old "its only a 1.3L!" argument is weak, as the rotary is essentially a 2 stroke and uses a lot more fuel than a 1.3L.

I don't see a specific mention of the 13B or 20B in these rules. Check prepard - it has to be in the XP ruleset (Erik's 20B RX7).

[GoDog]

Re: June 2007 FasTrack

For SM2 your 2.0 liter turbo at 2535 is for a AWD
A RWD 2.0 turbo would only be 2280
I wonder how much tire can be put under a GXP

[Paul]

Re: June 2007 FasTrack

For SM2 your 2.0 liter turbo at 2535 is for a AWD
A RWD 2.0 turbo would only be 2280
I wonder how much tire can be put under a GXP

Actually it would be 2240 lbs. Thanks for catching my error.