NSB Concept

Reinforced valve spring kit Honda F22A

€734.20 (tax incl.)

Reinforced kit of 16 valve springs for Honda F22A 2.2 16V engines.

  • Brand: SUPERTECH
  • Engines: F22A1, F22A3, F22A4, F22A6, F22A7, F22A8
  • Springs: single
  • Contents: springs, upper retainers, lower spring seats
SPRK-F22AB
On order, 15 to 30 days lead time
Pay in installments

Honda engine covered

This kit is meant for Honda's F22A family, a 2.2 litre 16-valve engine fitted to the Accord IV, Prelude IV and Ascot, in versions F22A1, F22A3, F22A4, F22A6, F22A7 and F22A8.

Each single spring in the kit replaces the standard one and comes with its upper retainer and lower spring seat.

SUPERTECH reinforced valve spring kit

As soon as the cam retreats, the spring presses the valve against its seat. High in the rev range the valve's momentum fights that return: load runs short, the stem bounces, closing drags and the piston can be hit, which is float.

Here, 16 single springs deliver 329 N on the seat at 41 mm installed height and 761 N at 10 mm lift.

Valve spring kit technical specification

Part numberBrandSpringsOuter / inner ØSeat pressureOpen pressureRateMax liftKit contents
SPRK-F22AB SUPERTECH Single Outer 23.7 mm
Inner 16.2 mm		 329 N at 41 mm 761 N at 10 mm 12.7 mm 16 springs, 16 upper retainers, 16 lower spring seats

Valve spring kit fitting details

PartHonda originalReinforced spring kit
Spring Kit specific (single)
Retainer Kit specific
Spring seat Kit specific
Collets Original kept

The SUPERTECH kit combines 16 single springs, 16 upper retainers and 16 lower spring seats; the eight inlet seats are not the ones used on the exhaust side. The original collets stay in place.

Valve shut, installed height is the span between the lower seat, on which the bottom coil rests, and the upper retainer above it. The 329 N quoted for this kit holds at exactly 41 mm. A wider span, say after the seats in the head are recut, takes load off in step with the spring rate; the table below sums up the reference.

SUPERTECH
Installed height 41 mm
Seat pressure at this height 329 N

Technical guide

Our brands

SUPERTECH SUPERTECH designs valvetrain parts for competition in California and has done so for over thirty years. Its spring steel blends chrome, silicon and vanadium, and production goes through ultrasound, radiography and laser checks, lot after lot, before anything ships.

How to choose

Firmer springs hold the valve against the cam profile much higher in the revs, so the redline can move up, a livelier camshaft can go in, or a turbo can be added without float coming back. The kit supplies 329 N on the seat at 41 mm. Net lift above 12.7 mm exhausts the travel of these springs: the chosen camshaft must therefore stay under that figure. The benefit also shows as steadiness, including over long stretches at sustained revs.

CriterionKey point
Choosing the pressure The 74 lbs mark equals 329 N on the seat. To settle on a figure, weigh three elements: the camshaft's lift, the speed you aim for and boost pressure, if any. If one of them rises, load must follow, never exceeding the travel the kit allows. Going beyond is pointless: a spring that is too hard tires the camshaft and followers quickly.
Single or double spring A lone spring per valve, 23.7 mm outside, close to the stock bulk: a double-spring layout would give more load but a fussier fit. Retainers and lower seats come in the kit; collets do not.

When reinforced springs become necessary

  • Camshaft that lifts higher than the original
  • Maximum revs moved well beyond stock
  • Boost pressure raised
  • Head rebuilt for track or mountain use
  • Original springs showing fatigue, or float at the top of the range

Compatible vehicles

ModelEngine codePowerYears
Accord IV 2.2 F22A6 141 hp 1991-1993
Accord IV 2.2 16V F22A1 126 hp 1990-1993
Accord IV 2.2 16V F22A4 132 hp 1990-1991
Accord IV 2.2 i 16V (CB7) F22A3 150 hp 1990-1993
Accord IV 2.2 i 16V Automatik (CB7) F22A3 147 hp 1990-1993
Accord IV Aerodeck 2.2 F22A6 141 hp 1991-1993
Accord IV Aerodeck 2.2 (CB8, CB9) F22A6 140 hp 1992-1993
Accord IV Aerodeck 2.2 16V F22A4 132 hp 1991-1991
Accord IV Aerodeck 2.2 16V (CB7) F22A1 126 hp 1991-1993
Accord IV Aerodeck 2.2 i 16V (CB8) F22A7 150 hp 1991-1993
Accord IV Aerodeck 2.2 i 16V (CB8) F22A8 147 hp 1991-1993
Accord IV Coupé 2.2 (CB7) F22A1 126 hp 1989-1993
Accord IV Coupé 2.2 (CB7) F22A4 132 hp 1989-1991
Accord IV Coupé 2.2 (CB7) F22A6 141 hp 1991-1993
Ascot Break 2.2 EX (CB3, CB4) F22A7 150 hp 1990-1996
Ascot Break 2.2 EX (CB3, CB4) F22A8 147 hp 1990-1996
Prelude IV 2.2 (BB5) F22A1 137 hp 1991-1996
Prelude IV 2.2 S (BA8) F22A1 131 hp 1991-1996
Important: this kit targets versions F22A1, F22A3, F22A4, F22A6, F22A7 and F22A8. The F22A2 of the Torneo, the F22B and the H22 are excluded. One set of 16 equips a complete engine.

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