SUPERTECH ENGINE VALVE KIT SUBARU EJ205 EJ255 EJ257 INTAKE AND EXHAUST VALVE PACKAGE

SUPERTECH ENGINE VALVE KIT SUBARU EJ205 EJ255 EJ257 INTAKE AND EXHAUST VALVE PACKAGE
SUPERTECH ENGINE VALVE KIT SUBARU EJ205 EJ255 EJ257 INTAKE AND EXHAUST VALVE PACKAGE
Item# SPR-SUB-EI-VALVE
Regular price: $350.72
Sale price: $259.00
EXHAUST VALVE MATERIAL:  EXHAUST VALVE SIZE:  INTAKE VALVE SIZE: 
Availability: Usually ships the same business day
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Product Description

New Black Nitride Coated Supertech Performance Dished Face intake Valves and exhaust valves (Inconel material optional). These will work in any Subaru EJ20, EJ25 WRX, WRX STI Engine.

Only the best materials are used in the creation of Supertech Performance's valves. Ready to handle whatever abuse you can throw at them. Perfect for forced induction applications and high revving naturally aspirated applications.

This is for a complete set of 16 valves (8 intake, and 8 exhaust)

Benefits for Black Nitride Coating include:

The micro hardness is higher than the stainless steel base material, keeping good ductility beneath the hard nitrated layer (micro hardness is 800hv minimum) Surface finish is smoother than with chromed valve stems, having less friction between the stem and guide. Valve seat surface is harder with the nitrated layer, lasting longer with lead free fuels, alcohols, nitro or other "explosive" mixes. Mathes any kind of seats (nodular iron seats, steel powder metal seats, hard aluminum-copper seats or beryllium copper seats).

Higher RPM engines take full advantage of all previous features. The higher the engine speed the bigger the power loss due to internal engine friction! The black nitride layer reduces this power loss due to less valve-guide friction.

The nitrated layer is adhered to the base material at microscopic level, so it will not "flake" or brake when the valves bend due to impacts with the pistons. The Black Nitride applies to the whole valve while the chrome coating is only applied to the stem.

All valves are swirl polished, have stem undercut, a hardened tip, and more.

Inconel high temperature valves: Inconel exhaust valves resist the ultra high temperatures in turbocharged Subaru motors without deterioration or failure. These are a must when moving to high power levels.

Notes: Professional installation is highly recommended