Late Model Honda/Acura Motors

Honda Civic D16A6 1.6L SOHC

Acura B-18A/B 1.8L DOHC (Non-VTEC)

D16Z & Y SOHC VTEC

Honda/Acura DOHC VTEC

Late Model Honda/Acura Motors

We are please to offer our new Fast-Zone^TM, High Performance Harmonically Dampened Valve Spring Kits for the popular late model Honda 4-CYL SOHC and DOHC Platforms.

Isky Valve Spring Kits are engineered for street or race applications. All kits are drop-in installations. In some cases with higher lift cams, the only modification required is machining the valve guide to allow for additional retainer to seal clearance.

Isky Valve Springs are wound from the finest quality, super clean chrome-silicon wire and processed for maximum durability and sustained performance.

Honda Civic D16A6 1.6L SOHC

The Civic kit consists of Single Valve Springs, Titanium Retainers, and Exhaust Valve Spring Locators. No machining required for installation.

Part No. O.D. I.D. Seat Press Open Press Coil Bind Max Lift Complete Kit 12300 0.934" 0.650" 65 lbs @1.670" 155 lbs @1.220" 1.080" 0.475"   Individual Components 306-S Valve Springs (Set of 16) 116-VSL Exhaust Spring Locaters (Set of 8)   116-TI Titanium Retainers (Set of 16)   NOTE: Isky 306-S single valve springs are compatible with stock steel retainers. However, stock retainers weigh 11.4 grams and our 116-TI is only 6 grams (a considerable weight advantage for the high revving enthusiast)! Keep stock intake locaters but discard stock exhaust locaters and replace with Isky 116-VSL for a uniform intake/exhaust installed valve spring height. Use stock valve locks.

Acura B-18A/B 1.8L DOHC (Non-VTEC)

Several options are available for the B-series Acura. The 406-S Single Outer is a great Harmonically Dampened "Stock Replacement" Valve Spring for pure Stock Cams and is compatible with Stock Retainers, Locators, and Valve Locks.

When converting to Dual Springs for high performance applications on the "B" Series Cylinder Head, you must also install our special Hard-Seat Locators and Titanium Retainers as the Stock units are not machined to accept the inner spring. Use Stock Valve Locks with both 12500 and 12600 kits.

Part No. Outer OD/ID Inner OD/ID Seat Press Open Press Coil Bind Max Lift* Single Outer Spring (Set of 16) 406-S 1.105" 0.815" -- 50 lbs @1.400" 125 lbs @1.000" 0.750" 0.400"* *Dual Street Kit 12500 1.105" 0.815" 0.815" 0.630" 54 lbs @1.400" 160 lbs @0.950" 0.720" 0.480"*   Individual Components 3205 *Dual Street Valve Springs (Set of 16) 118-VSL Spring Locaters (Set of 8)   118-TI Titanium Retainers (Set of 16). Weighs only 7.0 grams compared to 14.3 for stock retainers. *Dual Race Kit 12600 1.105" 0.815" 0.815" 0.610" 70 lbs @1.400" 204 lbs @0.950" 0.720" 0.500"*   Individual Components 3305 *Dual Race Valve Springs (Set of 16) 118-VSL Spring Locaters (Set of 8)   118-TI Titanium Retainers (Set of 16). Weighs only 7.0 grams compared to 14.3 for stock retainers.   *WARNING! Any valve lift over 0.440" will require machining down the valve guide to prevent retainer to valve seal interference.

D16Z & Y SOHC VTEC

The "D" Series VTEC kit consists of Single Harmonic Dampening Valve Springs and Titanium Retainers. In most cases, the stock steel retainer is adequate, as it only weighs 6.4 grams. However, for those who want maximum weight reduction, Isky 117-TI Titanium Retainers weigh only 4.2 grams. The 506-S Single Valve Spring is great for all around performance.

No machining required for installation.

Part No. O.D. I.D. Seat Press Open Press Coil Bind Max Lift Complete Kit 12400 0.889" 0.605" 60 lbs @1.950" 165 lbs @1.500" 1.395" 0.450"   Individual Components 506-S Valve Springs (Set of 16) 117-TI Titanium Retainers (Set of 16)   NOTE: Keep stock intake and exhaust locaters and valve locks.

Honda/Acura DOHC VTEC
B Series (B-16A, B-17A, B-18C), H-22 Series

The DOHC VTEC kit consists of Dual Harmonically Dampened Valve Springs, Hard-Seat Spring Locators, and Titanium Retainers. No machining is required for installation.

Although compatible with stock retainers, for sustained high rpm we highly recommend Isky 119-TI Titanium Retainers as they offer a tremendous weight savings.

Part No. Outer OD/ID Inner OD/ID Seat Press Open Press Coil Bind Max Lift "B" Series Kit 12700 1.169" 0.885" 0.885" 0.675" 80 lbs @1.320" 190 lbs @0.850" 0.760" 0.470"   Individual Components 3405 "B" Series Valve Springs (Set of 16) 119-VSL Spring Locaters (Set of 8)   119-TI Titanium Retainers (Set of 16). Weighs only 9.0 grams compared to 13.5 for stock retainers. "H-22" Series Kit 12800 1.169" 0.885" 0.885" 0.659" 78 lbs @1.400" 195 lbs @0.930" 0.880" 0.470"   Individual Components 3505 "H-22" Series Valve Springs (Set of 16) 119-VSL Spring Locaters (Set of 8)   119-TI Titanium Retainers (Set of 16). Weighs only 9.0 grams compared to 13.5 for stock retainers.   NOTE: Keep stock valve locks.