LIFETIME MEMBERSHIPS AVAILABLE which will include a LIFETIME MEMBERSHIP STICKER
Standard Classing
1. The Northwest Hill Climb Association (NHA) recognizes and uses 4 categories for vehicle classification for competition:
A. SCCA Solo classes as set forth in the Solo Rulebook for the current competition year;
B. SCCA General Competition Rule (GCR) classes as set forth in the GCR for the current competition year;
C. NHA Special classes as set forth in these Rules each year; and
D. Vintage classes as set forth in the SOVREN Rulebook for the current competition year.
2. NHA does not allow go-carts or Karts of any kind, or ATVs, UTVs (Razors) or any type of vehicle specifically built for off road usage. NHA also does not allow any 2 wheel or 3 wheel vehicles for competition.
3. NHA rules take precedence over all other listed rules.
4. Event supplemental rules, as posted in pre entry information are next in precedence.
5. Proper classing of the vehicle is the responsibility of the competitor, but is always subject to verification and correction by event officials and your fellow competitors. Competitors who wish to compete in GCR or Vintage classes may be asked to provide a current or the most recent vehicle Logbook or other documentation in support of the claimed competition classing. Should you have a question about your specific class you may contact the NHA Director of Classing by email (wm3@ace-emission.com).
6. Please refer to the SCCA Solo Rules, Section 3, which are incorporated by this reference as if herein repeated in full, as well as the Appendices thereto, also incorporated by this reference, for Solo classification rules and classes.
7. Open classes are open to all drivers otherwise eligible to compete. Ladies classes, in accordance with the rules set forth in Section 4.7 of the Solo Rules, shall be offered to female competitors who may choose to compete either in Ladies or in Open classes.
NOTE: All Cars in Solo Prepared and Modified classes must, per NHA, rules must run a SCCA® GCR legal roll bar or roll cage. THIS IS A REQUIREMENT IN EXCESS OF THE SOLO RULES. HANS devices will be required in 2018 for all drivers in these classes. See Section 5 of these Rules.
NHA Special Classes:
1. Over Street Prepared (OSPO/OSPU) (Over and Under 2.5 liters / 150 cubic inch engine displacement): These classes are meant to provide a place to compete for mass produced cars which exceed Solo Street Prepared classing rules but which may not be legal in Solo Prepared or Modified classes. These classes are a creature of local autocross clubs and the competitor is advised to refer to his or her local club for guidance in classing.
A. The OSP classing shall be OSPO (for cars whose engines have an effective displacement of 2.5 liters / 153 cubic inches and above) and OSPU (for cars whose engines have an effective displacement under 2.5 liters / 153 cubic inches). “Effective displacement” is the engine’s actual displacement, if it does not have forced induction, or as determined by subsection (d), below, for forced induction cars.
a. Engines need not be from the OE manufacturer.
B. Allowable competition tires are as set forth in Section 15.3 (relating to Solo Street Prepared cars) of the Solo Rulebook and specifically includes DOT-approved competition tires) and that section of the Solo Rules is incorporated herein by this reference as if repeated in full.
C. Class Criteria
a. The vehicle must able to be street licensed/legal as raced;
b. The vehicle must have a glass windshield;
c. The vehicle must retain inner door panels;
d. A front passenger seat is required. Rear seats may be removed.
D. Forced induction (defined as either supercharging or turbocharging) is allowed, subject to the following calculation of effective engine displacement: Original engine displacement multiplied by 1.4. (example: 2.0 liter engine turbocharged = 2.8 liters effective engine displacement)
E. Note: OSPO and OSPU competitors will be required to use a certified HANS device beginning in 2019, regardless of tires actually equipped. See Section 5 of these Rules.
2. Super Production (SPO/SPU) (Over and Under 2.5 liters / 153 cubic inches engine displacement): This is a class for production based cars claimed to be modified beyond applicable SCCA Solo or GCR classing. It also includes, for example, vehicles prepared to SP specifications under the International Conference of Sports Car Clubs (“Conference “) rules; vehicles claiming to be be classified under Conference rules shall produce a valid logbook on request by event officials.
A. Class Criteria
a. SP classing shall be be SPO (for cars whose engines have an effective displacement of 2.5 liters / 153 cubic inches and above) and SPU (for cars whose engines have an effective displacement under 2.5 liters / 153 cubic inches). “Effective displacement” is the engine’s actual displacement, if it does not have forced induction, or as determined by subsection (g), below, for forced induction cars; displacement for rotary engines shall be computed as twice the volume determined by the difference between the maximum and minimum capacity of the working chamber, multiplied by the number of rotors.
a. Engines need not be from the OE manufacturer.
b. Vehicles shall be production based, but full or partial tube frames are allowed.
c. Vehicle bodywork must have a silhouette recognizable as the model represented (for example, Corvette or Miata)
d. Bodywork must be in place and properly affixed to the chassis, as determined at technical inspection.
e. Allowable aerodynamic aids shall be as specified in Appendix A, Section 1 c of the Solo rules, pertaining to the Solo XP class, the provisions of which are incorporated by this reference as if herein repeated in full.
f. Engine location must be in same general area as original; i.e. in front of or behind the driver.
g. Forced induction (defined as either supercharging or turbocharging) is allowed, subject to the following calculation of effective engine displacement: Original engine displacement multiplied by 1.4. (example: 2.0 liter engine turbocharged = 2.8 liters effective engine displacement ).
h. All SPO / SPU cars must have rollcages/rollbars per GCR spec for the year in which the rollcage/rollbar was built / installed in the vehicle; the competitor shall, if requested, provide documentation demonstrating such compliance (including, but not limited to, a duly issued logbook or rollcage stamp issued by a local SCCA Region or Conference technical inspection). If the competitor cannot provide such documentation, the rollcage/rollbar may be required to conform to the GCR specifications of the current competition year.
i. Allowable competition tires are as set forth in Section 17.3 of the Solo Rulebook, pertaining to Prepared Cars, which is incorporated by this reference as if herein repeated in full.
j. NOTE: All SP competitors will be required to use a certified HANS device beginning in 2018. See Section 5 of these Rules.
3. Formula Ford (FF): Cars with 1600cc ford engines built prior to 2009 – note, these vehicles may also run under Solo C Modified rules. All competitors in this class will be required to use a certified HANS device beginning in 2018, regardless of tires actually equipped. See Section 5 of these Rules.
4. A Sports Racer (ASR): Sports racer built prior 2005 GCRs, ASR. The burden shall be on competitors to provide documentation pertaining to the construction and compliance with out-of-date GCRs for these vehicles.
A. NOTE: These vehicles MAY also be eligible to run under Solo A or B Modified rules. All competitors in this class will be required to use a certified HANS device beginning in 2018, regardless of tires actually equipped. See Section 5 of these Rules.
5. C Sports Racer (CSR): Sports racer built prior 2005 GCR, CSR. The burden shall be on competitors to provide documentation pertaining to the construction and compliance with out-of-date GCRs for these vehicles.
A. NOTE: These vehicles MAY also be eligible to run under Solo A or B Modified Rules. All competitors will be required to use a certified HANS device beginning in 2018, regardless of tires actually equipped. See Section 5 of these Rules.
6. Mod Vee (MV): Vehicles in this class must conform to Solo Formula Vee rules as set forth in the Solo Rules, Appendix A, Modified Class C, Section C and following, with the following exceptions. All competitors in this class will be required to use a certified HANS device beginning in 2018, regardless of tires actually equipped. See Section 5 of these Rules.
A. Class Criteria
a. Wheels and tires are unrestricted.
b. Carburetion/fuel injection normally aspirated, unrestricted.
c. Engine must be 2000cc or under, air cooled, using a VW case.
d. Aerodynamic devices are permitted
e. Wings permitted
f. Body work must be open wheel but of any type and design.
7. Formula Libre (FL): Provided as an open class for vehicles which it is claimed do not fit within the specifications/rules for other classes. All competitors in this class will be required to use a certified HANS device beginning in 2018, regardless of tires actually equipped. See Section 5 of these Rules.
A. Class Criteria
B. Purpose built for racing
C. Single seat
D. Unlimited displacement
E. Full suspension for each wheel
F. Normally aspirated
G. Minimum wheelbase 80″
H. Minimum weight 900 lbs with driver
I. Must have 2 wheels open
8. Hillclimb Prototype (HCP): This class is intended to be a catch-all place for purpose- built racecars built beyond GCR specifications, and includes specials, Can-Am, WSC, IMSA/Sports Car, and FIA Prototypes, and all sports racers built beyond ASR specifications (per 2006 GCRs). All competitors in this class will be required to use a certified HANS device beginning in 2018, regardless of tires actually equipped. See Section 5 of these Rules.
A. Class Criteria
a. Four wheels fully suspended
b. No mechanical down force permitted (sucker cars)
c. Displacement and type of induction unrestricted
d. Wings are unrestricted.
e. Vehicles may be open or closed wheel.
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