Our
special on Supertech Performance Valves & Components!
This
listing is for a complete set of 16 STD Size Supertech Black Nitride
coated Budget valves for all
Honda & Acura B-Series
DOHC VTEC applications.
These 200 series valves are equivalent to an
OEM replacement valves, good for stock to mild street applications.
This listing includes Supertech part numbers:
HIVN-200F x 8 (intake)
HEVN-200F x 8 (exhaust)
Head Diameter: 33.0mm (intake)
28.0mm (exhaust)
Stem Diameter: 5.48mm (intake)
5.45mm (exhaust)
Valve Length: 102.5mm (intake)
102.5mm (exhaust)
Material: Black Nitrided
BLACK NITRIDE:
This
is a hardening treatment that even though it is not widely used as the
chrome coating, it has several benefits and is becoming very popular,
mainly for European and Japanese applications.
The microhardness
is higher than the stainless steel base material, keeping good ductility
beneath the hard nitrided layer (microhardness is 800HV minimum).
Surface finish is smoother than with chromed stems, having less friction between stem and guide.
Valve
seat surface is harder with the nitrided layer, lasting longer with
lead free fuels, alcohols, nitro or other "explosive" mixes. Matches any
kind of seats (nodular iron seats, steel powder metal seats, hard
aluminum-copper seats or beryllium copper seats).
Higher rpm's
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 nitrided layer is adhered to the base material
at a microscopic level, so does not "flake" or break 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 and a hardened tip.
Product info
We
apply more than 30 years of experience in the development of each and
every Supertech racing valve we sell. Combine this experience with state
of the art equipment such as ultrasonic tests, x-rays, laser
measurement equipment, and applications like computerized Finite Element
Analysis (FEA) and it is no wonder why supertech has some of the best
performance products on the market.
While this is more than most
manufacturers we don’t stop there. We also do extensive testing working
very closely with many of today's top engine builders in order to
continuously
improve our products. All of this is meant to insure Supertech's
industry leading reputation for high flow rates, durability and
uncompromising quality.
Higher Flow Rates
Our valves are not
finished from generic blanks rather they are specifically designed for
each and every application. We work relentlessly, testing and
researching every aspect trying to improve the air flow of our designs.
Durability
With
every valve design we strive to maximize durability through higher
fatigue resistance and tensile strength. Each valve tip is hardened
beyond 52HRc.
Stem Super finishing
In 2006 we introduced our
stem Superfinishing as a standard addition to all of our valves and
provided it at no additional cost. When our Superfinish is combined with
our Black Nitrided valve it reduces the surface roughness to 1/3 of our
chrome coated valve. The end result… unsurpassed performance and
durability.
Strict Dimensional Tolerances
It's unlikely you
will find any of our competitor’s valves with stricter dimensional
tolerances than our Supertech valves. Combine that with finished seats
with equally strict run out tolerances and you won’t find a better
sealing, better performing and easier to install solution anywhere!