Supertech black nitride exhaust and intake valves for H22 Honda Prelude. These valves are available in various sizes to match your head diameter. Sold as a set of 8 or individually as needed. Please do all your research and consult your engine builder if necessary! Black nitride valves are made from one piece forged stainless steel then go through a special hardening process to lessen the friction between the valve and guide.
Vehicle Fitment:
1993-2000 Honda Prelude
H22 VTEC 2.2L
| Fitment: | Size: | Includes: | Part Numbers: |
| Exhaust | Standard 30.0mm Dish • Stem Diameter 5.45mm • Length 106.45mm |
8 Valves | HEVN-1006D-8 |
| 1 Valve | HEVN-1006D-1 | ||
| Exhaust | Standard 30.0mm Flat • Stem Diameter 5.45mm • Length 106.45mm |
8 Valves | HEVN-1006F-8 |
| 1 Valve | HEVN-1006F-1 | ||
| Exhaust | +.5mm Oversize 30.5mm • Stem Diameter 5.48mm • Length 106.45mm |
8 Valves | HEVN-1007-8 |
| 1 Valve | HEVN-1007-1 | ||
| Intake | Standard 35.0mm Dish • Stem Diameter 5.48mm • Length 106.85mm |
8 Valves | HIVN-1006D-8 |
| 1 Valve | HIVN-1006D-1 | ||
| Intake | Standard 35.0mm Flat • Stem Diameter 5.48mm • Length 106.85mm |
8 Valves | HIVN-1006F-8 |
| 1 Valve | HIVN-1006F-1 | ||
| Intake | +.5mm Oversize 35.5mm • Stem Diameter 5.48mm • Length 106.85mm |
8 Valves | HIVN-1007-8 |
| 1 Valve | HIVN-1007-1 | ||
| Intake | +1mm Oversize 36.0mm • Stem Diameter 5.48mm • Length 106.85mm |
8 Valves | HIVN-1008-8 |
| 1 Valve | HIVN-1008-1 | ||
| Exhaust | +2mm Oversize 37.0mm | *Discontinued* | HIVN-1009 |
The “Black Nitride” is a hardening treatment that is applied to the whole valve whereas the chrome coating is only applied to the stem. The microhardness is higher than the stainless steel base material, keeping good ductility beneath the hard nitrided layer. Microhardness is 800HV minimum.
The Black Nitride surface finish is smoother than with chromed stems, having less friction between stem and guide. The higher the engine speed the bigger the power loss due to internal engine friction! The Black Nitride reduces this power loss due to less valve-guide friction.
Note:
Images are for reference. Some Supertech parts have varying part numbers with slashes, dashes, spaces or quantities.
| Select: | Exhaust 30.0mm Dish (Set of 8) (HEVN-1006D-8), Exhaust 30.0mm Dish (1 Single) (HEVN-1006D-1), Exhaust 30.0mm Flat (Set of 8) (HEVN-1006F-8), Exhaust 30.0mm Flat (1 Single) (HEVN-1006F-1), Exhaust 30.5mm (Set of 8) (HEVN-1007-8), Exhaust 30.5mm (1 Single) (HEVN-1007-1), Intake 35.0mm Dish (Set of 8) (HIVN-1006D-8), Intake 35.0mm Dish (1 Single) (HIVN-1006D-1), Intake 35.0mm Flat (Set of 8) (HIVN-1006F-8), Intake 35.0mm Flat (1 Single) (HIVN-1006F-1), Intake 35.5mm (Set of 8) (HIVN-1007-8), Intake 35.5mm (1 Single) (HIVN-1007-1), Intake 36.0mm (Set of 8) (HIVN-1008-8), Intake 36.0mm (1 Single) (HIVN-1008-1) |
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