Introduction

The Civic Racing Series (CRS) is a proposed race series for the EF/EG/EK or 4th, 5th and 6th generation Honda Civics spanning from 1988 to 2000.

Its purpose is to entice amateur racers into focusing their efforts on minimum car preparation but with maximized racing seat time.

This can be accomplished by a comprehensive set of basic rules to ensure a highly competitive series with a modest budget.

Plans are in motion to debut CRS as a piggyback series alongside the IPE class with all 6 races to be held at Mission Raceway in 2019.

As of March 10 2019, we have received provisional approval to run in the IPE class as planned!

2020 – “Year of the Covid” – Unfortunately with little to no grid action, specifically for CRS, our provisional status will carry on into 2021.

Dec 2020 – Plans to include a B-Series class for 2021 are underway with new rules listed.

Join us on our Official CRS Facebook Group
Youtube Civic Racing Series
Instagram @civicracingseries

1. Rules and Classifications

CRS currently consists of two independent classes: D-series class and B-series class. Each class will run separately and independently and do not compete against each other.

1.1 D-series Class

  • All vehicles powered by a D-Series powerplant
  • Vehicles powered by D-Series powerplant must conform to the CRS D-series classification rules (Section 3.1) as well as the General Requirements (Section 2)
  • All vehicles must conform to the CACC GCR

1.2 B-Series Class

  • All vehicles powered by a B-Series powerplant
  • Vehicles powered by B-Series powerplant must conform to the CRS B-Series classification rules (Section 3.2) as well as the General Requirements (Section 2)
  • All vehicles must conform to the CACC GCR

2. General Requirements


– If it doesn’t specifically say you can do it, it means you CAN’T do it.

2.1 WHEELS

  • 15 in. diameter
  • 6 in. minimum width, 8 in. max width
  • Offset: OPEN (wheel and tire CANNOT extend past factory body work)

  • *Rolling of factory fenders PERMITTED
  • *Spacing fenders or over-fenders NOT PERMITTED

    Over fenders used to specifically cover/”fix” rust in rear 1/4 panels permitted

2.2 TIRES

Series control tire (wet and dry)
Toyo RA1 205/50/15

2.3 BRAKES

  • Brake bias controller is NOT PERMITTED
  • Rotor must be 1 piece
  • FRONT rotor diameter cannot exceed 282mm/11in.
  • FRONT rotor thickness cannot exceed 23mm/0.9 in.
  • REAR rotor diameter cannot exceed 262mm/10in.
  • REAR rotor thickness cannot exceed 9mm/0.35in.
  • REAR rotor CANNOT be vented
  • Emergency brake delete OPEN
  • Front caliper: Honda OEM or equivalent
  • Rear caliper: Honda OEM or equivalent
  • [Essentially all above is Type-R spec]
  • Brake lines OPEN
  • Brake fluid OPEN
  • Brake ducts/cooling OPEN
  • Brake booster OPEN
  • Brake pads OPEN
  • Master cylinder OPEN
  • Master cylinder brace OPEN

**4 Piston Calipers and/or 2 piece rotors will incur a 75 lb. penalty**

2.4 SUSPENSION

  • *2 way or more adjustable dampers NOT PERMITTED – (*independently adjustable rebound/compression)
  • Remote reservoir dampers NOT PERMITTED
  • Adjustable rear toe links OPEN
  • Bushings OPEN
  • FRONT lower balljoint OPEN
  • Front and Rear camber kit OPEN
  • Rear trailing arm bushing OPEN
  • Rear Lower Control Arms OPEN
  • Rear roll center correction – OPEN
  • Front anti-roll bar OPEN
  • Rear anti-roll bar OPEN
  • Front, Rear tower bar OPEN
  • Front Rear lower braces OPEN
  • Subframe collars PERMITTED
  • Steering rack quickeners NOT PERMITTED
  • Steering arms OEM or equivalent
  • Power steering OEM – additional coolers OPEN
  • Steering rack OEM or equivalent

Mix and match subframes between generations OPEN 
Mix and match knuckles between generations OPEN
Innovative or similar traction bars for EF/DA OPEN

2.5 TRANSMISSION

  • NO B to D or D to B transmission swaps
  • Gears Honda OEM, mix and match NOT PERMITTED (D-Series)
  • Close ratio gears and/or OEM mix and match OPEN (B-Series ONLY)
  • Flywheel OPEN
  • Bearings OEM or equivalent
  • Clutch OPEN (must fit OEM style flywheel)
  • Synchros OPEN
  • Fluid OPEN
  • Final Drive OPEN
  • Differential OPEN
  • Axles OPEN
  • Bushings OPEN
  • Shifter OPEN
  • Cooler OPEN

2.6 EXTERIOR

  • Front splitter NOT PERMITTED
  • Rear diffuser NOT PERMITTED
  • Front bumper OEM or equivalent (cutting, slotting, adding holes NOT PERMITTED)
  • Front spoiler OPEN
  • Headlights OPEN (must be present/coverings PERMITTED)
  • Turn Signals OPEN (must be present/coverings PERMITTED)
  • Fenders OEM or equivalent
  • REAR fender flares as a method of rust repair is permitted
  • Fender liners OPEN
  • Hood OPEN
  • Windshield OEM or equivalent
  • Doors OEM but may be gutted
  • Side mirrors OPEN (must be present)
  • Side skirts OEM mix and match PERMITTED
  • 3/4 windows OEM or equivalent
  • Hatch/Trunk OEM or equivalent
  • Rear spoiler OEM/OEM style
  • Rear bumper OEM or equivalent (cutting, slotting, adding holes NOT PERMITTED)
  • Rear lip OPEN
  • Taillights OPEN

2.7 INTERIOR

  • Dashboard must remain
  • Removal of Vents, Clock, HVAC Controls, Skeleton and Glovebox PERMITTED
  • Alternative clusters PERMITTED
  • Heater core delete PERMITTED

3. CLASSES

All vehicles must conform to the specified class rules for the chosen powerplant, either Section 3.1 for D-Series OR Section 3.2 for B-Series.

*Vehicles must also conform to the CACC GCR.

3.1 D-Series ENGINE / MINIMUM WEIGHT

  • D15B7 – 102hp/6500rpm 9.2:1/9.5:1 – 1,870lb
  • D16A6 – 108hp/7200rpm 9.1:1/9.32:1 – 1,960lb
  • D16Y7 – 106hp/7200rpm 9.4:1 – 1,960lb
  • D16Y8 – 127hp/7200rpm 9.6:1 – 2,290lb
  • D16Z6 – 125hp/7400rpm 9.2:1 – 2,290lb
  • NO “Mini-Me” engines. The practice of using a NON-VTEC block with a VTEC head is prohibited. A VTEC block with a NON-VTEC head is allowed.
  • Pistons OEM, mix and match NOT PERMITTED
  • Head gasket 3-piece metal OEM or equivalent
  • ARP headstuds PERMITTED
  • Milling block not to exceed service limit
  • O/S pistons not to exceed service limit
  • Crank any D-Series
  • Rods any D-Series (ARP fasteners PERMITTED)
  • Oil pump any D-Series (porting PERMITTED)
  • Oil cooler OPEN
  • Oil pan OPEN
  • Windage tray OPEN
  • Crank pulley OPEN
  • Valves OEM
  • Valve springs OPEN
  • Valve retainers OEM
  • Valve cover venting OPEN
  • Camshaft OEM
  • Cam gear OEM
  • Fuel rail OPEN
  • Injectors OPEN
  • FPR OPEN
  • Fuel pump OPEN
  • Fuel Tank OEM
  • Surge Tank OPEN
  • Air filter/intake system OPEN (external feed NOT PERMITTED)
  • Intake manifold OEM
  • Throttle body OEM
  • Phenolic gaskets OPEN
  • Swirl Pot OPEN
  • Radiator OPEN
  • Fans OPEN
  • Engine mounts OPEN
  • Engine Management OPEN
  • Ignition System OPEN
  • Ignition wires OPEN
  • Battery OPEN
  • Header OPEN
  • Exhaust OPEN – must fall within dB guidelines set by race track. 

    * Per CACC GCR rules, port matching into the intake manifold, the cylinder head and the header ports are permitted up to 1.0 in.
    ** CRS will allow the port matching of the throttle body port on the intake manifold up to 1.0 in.



3.2 B-SERIES ENGINE / MINIMUM WEIGHT

  • B18B1 – 140hp/6300rpm 9.2:1 – 2,050lb
  • B20B – 126hp/5400rpm 8.8:1 – 2,050lb
  • B20Z – 145hp/6200rpm 9.2:1 – 2,100lb
  • B16A3 – 160hp/7600rpm 10.2:1 – 2,350lb
  • B17A1 – 160hp/7600rpm 9.7:1 – 2,360lb
  • B18C1 -178hp/7600rpm 10.0:1 – 2,615lb (ITR style manifold PERMITTED)
  • B18C5 – 195hp/7800rpm 10.6:1 – 2,865lb

    *NO LS-VTEC engines. The practice of using a NON-VTEC shortblock + VTEC head is NOT Permitted.

    *NO Cylinder Head swaps, e.g. a B18C1 head cannot be swapped onto a B16A or vice versa. Cylinder heads must match/originate to the shortblock.

    *Only the B18C1/GS-R/SiR-G dual plenum OEM manifold may be replaced with an R style single plenum manifold but must retain the OEM throttle-body. NO OTHER B-Series may use an aftermarket or OEM swap intake manifold.

    European/JDM or other market variants will be subject to review by the CRS committee. Rule of thumb is power to weight ratio is 14.687 lb/hp.
  • Port Polishing/Port matching NOT PERMITTED*-**
  • Coatings or treatments NOT PERMITTED
  • Pistons OEM, mix and match NOT PERMITTED
  • Head gasket 3-piece metal OEM or equivalent
  • Milling block not to exceed service limit
  • O/S pistons not to exceed service limit
  • Crank OEM, NO swapping permitted between models
  • Rods OEM, NO swapping permitted between models
    (ARP fasteners PERMITTED)
  • Oil pump OEM (porting PERMITTED, Oil pump gear OPEN)
  • Oil cooler OPEN
  • Oil pan OPEN
  • Windage tray OPEN
  • Crank pulley OPEN
  • Valves OEM (No swapping R valves into NON ITR motors/heads)
  • Valve springs OPEN
  • Valve retainers OEM
  • Lost Motion assemblies OPEN
  • Valve cover venting OPEN
  • Camshaft OEM (No swapping R cams into NON ITR motors/heads)
    *No updating/backdating cams for VTEC and NON-VTEC motors
    *NO REGRINDS
  • Cam gears OEM
  • Fuel rail OPEN
  • Injectors OPEN
  • FPR OPEN
  • Fuel pump OPEN
  • Fuel Tank OEM
  • Surge Tank OPEN
  • Air filter/intake system OPEN (external feed NOT PERMITTED)
  • Intake manifold OEM (18C1/GS-R may swap for single plenum R style manifold)
  • Throttle body OEM (must retain factory sized throttle body for selected motor)
  • Phenolic gaskets OPEN
  • Swirl Pot OPEN
  • Radiator OPEN
  • Fans OPEN
  • Engine mounts OPEN
  • Engine Management OPEN
  • Ignition System OPEN
  • Ignition wires OPEN
  • Battery OPEN
  • Header OPEN
  • Exhaust OPEN – must fall within dB guidelines set by race track. 

* Per CACC GCR rules, port matching into the intake manifold, the cylinder head and the header ports are permitted up to 1.0 in.

** CRS will allow the port matching of the throttle body port on the intake manifold up to 1.0 in.



3.3 ENGINE / CHASSIS COMBINATIONS

  • EF – Any D/B-series engine listed in Section 3
  • EG – Any D/B-series engine listed in Section 3
  • EK – Any D/B-series engine listed in Section 3
  • Integra DA/DC (Provisionally for 2021 only. Disallowed 2022 onward) – Any D/B-series engine listed in Section 3