SCCA Time Trials

We're gonna put some of the coolest cars here. Part of what will be cool about them is they are awesome enough to be on the exclusion list.

1. Cars listed as eligible in and prepared to the current SCCA Solo Street Category Rules are permitted to compete in their listed Time Trials Sport classes and are not restricted to Sport Class tire-width limits. Solo SSR-class vehicles are restricted to Sport Category minimum tread wear ratings. Vehicles with this allowance are not permitted to interchange preparation Rules.

2. Cars listed as eligible in and prepared to the current SCCA Autocross Solo Spec Coup (SSC) Rules are permitted to compete in Time Trials Sport Class 5 (S5). SSC cars with this allowance are not permitted to interchange preparation Rules and must run on the spec tire.

3. Cars listed as eligible in and prepared to the previous SCCA Road Race Showroom Stock Rules are permitted to compete in their respective Time Trials Sport classes provided they run on Time Trials legal tires. Vehicles with this allowance are not permitted to interchange preparation Rules otherwise.

Even more awesome cars we considered, and ultimately decided, "This is certainly a dream car, and Max Category is the place for dream cars, whether it's the car you dream to build, or the car you dream to buy." And as awesome as all of the cars on this list are, they are automatically placed in Max 1!

This is where we're going to put cars that might not quite meet the rules, but we think they can go in this category anyway.

1. Cars listed as eligible in and prepared to the SCCA Road Race National Touring 2, 3 and 4 Rules are permitted to compete in their respective Time Trials Tuner Class provided they run on Time Trials legal tires. Vehicles with this allowance are not permitted to interchange preparation rules otherwise.

2. Cars listed as eligible in and prepared to the SCCA Road Race National Spec Miata Rules are permitted to compete in Time Trials Tuner Class 5 (T5) provided they run on Time Trials legal tires. Vehicles with this allowance are not permitted to interchange preparation rules otherwise.

3. Cars listed as eligible in and prepared to the SCCA Solo ST Street Touring Rules are permitted to compete in their respective Time Trials Tuner Class. Vehicles with this allowance are not permitted to interchange preparation rules otherwise.

Note: SCCA Solo Street Prepared has been rejected for Tuner Category inclusion because a full-tilt Street Prepared car is an engine-swapped, intake-manifold customized Frankenstein creation which is awesome, but doesn't belong in Tuner Category.

1. Max 1 eligible vehicles include production vehicles and eligible kit cars not weighing less than 2,500 lbs. or 95% of curb weight (with driver), whichever is greater, powered by the following OE engine displacement or KW-rated motor(s):

A. Naturally aspirated 4-cycle engines greater than 6.4L OE measured displacement.

B. Naturally aspirated rotary or 2-cycle engines greater than 2.0L OE measured displacement.

C. Modified or Unmodified single-unit forced-induction engines greater than 4.5L OE measured displacement.

D. Modified or Multi-unit forced-induction engine configurations greater than 2.9L (4-cycle) or 1.75L (Rotary/2-Cycle) OE measured displacement.

E. Electric vehicles with greater than 400KW OE rated motor(s).

2. Max 1 eligible vehicles include the following underweight vehicles from classes below:

A. Vehicles within Max 2 eligible limits weighing less than 2,800 lbs. but not less than 2,400 lbs. or 95% of curb weight (whichever is greater).

B. Vehicles within Max 3 eligible limits weighing less than 2,300 lbs. but not less than 2,000 lbs. or 95% of curb weight (whichever is greater).

C. Vehicles within Max 4 eligible limits weighing less than 2,000 lbs. but not less than 1,600 lbs. or 95% of curb weight (whichever is greater).

D. Vehicles within Max 5 eligible limits weighing less than 1,300 lbs. but not less than 1,100 lbs. or 95% of curb weight (whichever is greater).

3. Max 1 eligible vehicles include the following low-production vehicles (less than 1,000 examples):

A. Vehicles which meet power, displacement and configurations for the classes below, not weighing less than 1,100 lbs. or  95% of curb weight (with driver) whichever is greater.

1. Max 2 eligible vehicles include production vehicles of more than 1,000 examples and eligible kit cars not weighing less than 2,800 lbs. or 95% of curb weight (with driver), whichever is greater, powered by the following OE engine displacement or KW-rated motor(s):

A. Unmodified naturally aspirated 4-cycle engines of up to 6.4L OE measured displacement.

B. Unmodified naturally aspirated rotary or 2-cycle engines of up to 2.0L OE measured displacement.

C. Modified naturally aspirated 4-cycle/rotary engines up to their respective Max 3 listed OE measured naturally aspirated unmodified displacement limit.

D. Unmodified single-unit forced induction 4-cycle/rotary engines within their respective Max 3 listed OE measured naturally aspirated unmodified limit.

E. Modified or unmodified multi-unit forced induction engines or added forced induction within Max 4 listed OE measured naturally aspirated unmodified limit.

F. Electric vehicles with unmodified OE batteries and up to 400 KW OE rated motor(s).

G. Electric vehicles with modified/replaced batteries or modified motor(s) up to Max 3 OE rated motor(s).

2. Max 2 eligible vehicles include the following underweight vehicles from classes below:

A. Vehicles powered by Max 3 eligible engines/motors weighing less than 2,500 lbs. but not less than 2,300 lbs. or 95% of curb weight (with driver) whichever is greater.

B. Vehicles powered by Max 4 eligible engines/motors weighing less than 2,000 lbs. but not less than 1,800 lbs. or 95% of curb weight (with driver) whichever is greater.

C. Vehicles powered by Max 5 eligible engines/motors weighing less than 1,500 lbs. but not less than 1,300 lbs. or 95% of curb weight (with driver) whichever is greater.

1. Max 3 eligible vehicles include production vehicles of more than 1,000 examples and eligible kit cars not weighing less than 2,500 lbs. or 95% of curb weight (with driver), whichever is greater, powered by the following OE engine displacement or KW-rated motor(s):

A. Unmodified naturally aspirated 4-cycle engines of up to 4.5L OE measured displacement..

B. Unmodified naturally aspirated rotary or 2-cycle engines of up to 2.0L OE measured displacement.

C. Modified naturally aspirated 4-cycle/rotary engines up to their respective Max 4 listed OE measured naturally aspirated unmodified displacement limit.

D. Unmodified single-unit forced induction 4-cycle/rotary engines within their respective Max 4 listed OE measured naturally aspirated unmodified displacement limit.

E. Modified or unmodified multi-unit forced induction engines or added forced induction within Max 5 listed OE measured naturally aspirated unmodified limit.

F. Electric vehicles with unmodified OE batteries and up to 250 KW of OE rated motor(s).

G. Electric vehicles with modified/replaced batteries or modified motor(s) up to Max 5 OE rated motor(s) limit.

2. Max 3 eligible vehicles include the following underweight vehicles from classes below:

A. Vehicles within Max 4 eligible limits weighing less than 2,200 lbs. but not less than 2,000 lbs. or 95% of curb weight, (with driver) whichever is greater.

B. Vehicles within Max 5 eligible limits weighing less than 1,700 lbs. but not less than 1,500 lbs. or 95% of curb weight, (with driver) whichever is greater.

1. Max 4 eligible vehicles include production vehicles of more than 1,000 examples and eligible kit cars not weighing less than 2,200 lbs. or 95% of curb weight (with driver), whichever is greater, powered by the following OE engine displacement or KW-rated motor(s):

A. Unmodified naturally aspirated 4-cycle engines of up to 2.9L OE measured displacement.

B. Unmodified naturally aspirated rotary or 2-cycle engines of up to 1.5L OE measured displacement.

C. Modified naturally aspirated 4-cycle/rotary engines up to their respective Max 5  listed OE measured naturally aspirated unmodified displacement limit.

D. Unmodified single-unit forced induction 4-cycle/rotary engines within their respective Max 5  listed OE measured naturally aspirated unmodified displacement limit.

E. Electric vehicles with unmodified OE batteries and up to 175 KW of OE rated motor(s).

F. Electric vehicles with modified/replaced batteries or modified motor(s) up to Max 5 OE rated motor(s) limit.

2. Max 4 eligible vehicles include the following underweight vehicles from classes below:

A. Vehicles within Max 5 eligible limits weighing less than 1,900 lbs. but not less than 1,700 lbs. or 95% of curb weight, (with driver) whichever is greater. 

1. Max 5 eligible vehicles include production vehicles of more than 1,000 examples and eligible kit cars not weighing less than 1,900 lbs. or 95% of curb weight (with driver), whichever is greater, powered by the following OE engine displacement or KW-rated motor(s):

A. Unmodified naturally aspirated 4-cycle engines of up to 1.9L OE measured displacement.

B. Unmodified naturally aspirated rotary or 2-cycle engines of up to 1.25L OE measured displacement.

C. Electric vehicles with unmodified OE batteries and up to 100KW of OE rated motor(s).

To determine the corrected displacement for classing purposes, the following formulas will be used:

1. Rotary: Actual displacement X 2.0

2. 2-Cycle Engines: Actual displacement X 2.0

3. Forced induction: Actual or corrected displacement X 1.5

A. For each additional forced induction unit 0.5 should be added to the forced induction displacement modifier (e.g., twin charged, twin turbo: Actual corrected displacement X 2. Quad turbo: Actual displacement X 3).

The following kit cars are eligible for Max Category:

1. Shelby Cobra Models

2. Shelby Daytona Coupe Models

3. Corvette 1963 Grand Sport Models

4. Ariel Atom

5. Exocet

6. Noble M400/M12 and Rossion Q1

7. Brunton Auto - Stalker

8. Factory Five 818/818C

9. DF Kit Car Goblin

Cars which are production silhouette, but are over the displacement limits or under the weight limits for Unlimited 2. (U2)

1. U1 minimum weight: None

Cars which are production silhouette and meet the following criteria:

1. U2 minimum weight:1,750 Lbs. (With Driver.)

2. U2 Maximum Displacement, 3.0 Liters corrected displacement.