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Tomei Japan Valve Spring Set For Nissan Skyline R32 GTST RB20DET & Fairlady Z Z32 300ZX VG30DETT 13203R800
£235.39
£196.16
Lead Time: 2-3 Weeks
SKU
13203R800
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High quality designed springs are required to transfer the exact movement of the camshaft to the valves at high engine speeds on high performance engines. The TOMEI products are always engineered with precision in mind to suit the user’s needs. So with this in mind careful choices in material selection is made with surface coating and other technologies. Then the pre-production products are put through an extensive testing program for checking durability, quality and performance. We spend time and money to help you save your valuable time and money.
FEATURE / SPEC
DIA METER |
FREE LENGTH(mm) |
SET LENGTH(mm) |
LIFT LENGTH(mm) |
COMPRESSED LENGTH(mm) |
SET LOAD(kgf) |
LIFT LOAD(kgf) |
MATERIAL |
PROCESS |
COLOR ID |
---|---|---|---|---|---|---|---|---|---|
Φ3.90 | 41.0 | 35.0 | 25.0 | 24.0 | 24.2±7% | 80.6±7% | SWOSC-VX |
Nitride |
Blue |
■ Multi Coil Unequal Pitch Springs
By combining several steps of spring rates into the one spring and vibration frequency becomes amazingly high. This greatly minimizes resonance and the chances of surging.
■ Advanced Oil Tempered Chromium-silicone Alloy Steel Core
Oil tempered chromium-silicone alloy steel wire is used which is considered to be the best material for springs for performance applications and evolved it even further. Combined with a new optimized design, not only did we make it tougher, we also succeeded in suppressing valve jumps or bounce even when raising the engines speeds RPM limit.
■ Shot Peening
A process that strikes many small steel balls onto the surface of the spring at high speeds is made to enhance the surface of the spring to raise its fatigue limit. Although it has been carried out earlier during the manufacturing process.
■ Warm Setting
The process that is adding higher loads beyond the actual limits to the highly heated spring. This will modify its shape and keep it permanently fixed. We succeeded in securing the highest performance over a long period of time while preventing sagging.
■ Nitriding
The surface treatment method for making nitrogen permeates the spring and gives it large surface compression repulsion. This method was chosen to raise the fatigue limit to suit the demands or running high lift camshafts. The dangers of spring failure is greatly reduced with the 1.5 times increase in the springs fatigue limit with the combined use of Oil tempered chromium-silicone alloy steel wire and Nitriding. This is how our valve springs are suitable for use on extreme engine speed conditions of super-high revs exceeding 10,000 RPM which had not been previously possible with high lift camshafts.
Terminology
【Surging】
The Phenomenon which material of the valve spring resonance and causes the spring itself to vibrate violently.
【Jump】
The Phenomenon that the valve rallies to the cam surface instead of settled back. It happens when the valve cannot follow the camshaft rotation and lifted irregally.
【Bounce】
The Phenomenon that the valve is bouncing repeatedly from valve seat other than sticking to it when it is closing.
【Fatigue】
Breakage that occurs during the repeat operation of the spring. (The larger lift, the more possibilities to get fatigued)
【Sag】
The Phenomenon in which the load (free play) of a spring decreases while inuse. It is related to the maximum stress under operation and use time.
The Phenomenon which material of the valve spring resonance and causes the spring itself to vibrate violently.
【Jump】
The Phenomenon that the valve rallies to the cam surface instead of settled back. It happens when the valve cannot follow the camshaft rotation and lifted irregally.
【Bounce】
The Phenomenon that the valve is bouncing repeatedly from valve seat other than sticking to it when it is closing.
【Fatigue】
Breakage that occurs during the repeat operation of the spring. (The larger lift, the more possibilities to get fatigued)
【Sag】
The Phenomenon in which the load (free play) of a spring decreases while inuse. It is related to the maximum stress under operation and use time.
These manuals are included in the packages with the products unless there was a recent update made in which you will need to download the lastest update from here.
Any prices listed in these manuals may be outdated as they can change at anytime without prior notification. The updated part numbers and or prices will be listed on our website.
The TOMEI MANUALS are only a basic guide for the installation of the TOMEI products, these manuals do require to be used with the official vehicles manufactures service manual to properly guide the installation process.
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STROKER KITS
- RB28KIT/ FORGED 8 COUNTER CRANKSHAFT
- SR22KIT/SR22 FORGED FULL COUNTER CRANKSHAFT
- 4G63-22 KIT
- 4G63-23 KIT
- EJ22・EJ25KIT/BILLET CRANKSHAFT
- EJ26KIT/BILLET CRANKSHAFT
- 2JZ36KIT/BILLET CRANKSHAFT
BOTTOM END INTERNALS
- PISTON KITS for 4AG INSTALLATION MANUAL SUPPLEMENT
- PISTON KIT
- H-BEAM CONNECTING RODS
- CONNECTING RODS for 4AG INSTALLATION MANUAL SUPPLEMENT
- COMPETITION BEARINGS
VALVE TRAIN
- PONCAM/PROCAM
- PONCAM/PROCAM SUPPLEMENT
- PONCAM/PROCAM SUPPLEMENT
- PONCAM/PROCAM SUPPLEMENT
- PONCAM/PROCAM SUPPLEMENT
- PONCAM SUPPLEMENT
- CAMSHAFT SPECIFICATIONS
- SOLID PIVOTS
- ROCKER ARM STOPPERS
- SOLID PIVOTS
- BELT GUIDE
- ADJUSTABLE CAM GEAR
- VALVE SPRINGS
- OVERSIZED VALVE
- VALVE GUIDES
- VALVE LIFTERS/ SOLID LIFTERS
- INNER SHIM KIT
- BERY RINGS
- STRENGTHENED TIMING BELT
- TITANIUM VALVE SPRING RETAINERS
GASKETS
BOLT
- STRENGTHENED CAM CAP STUD BOLTS
- HEAD STUD BOLTS
- MAIN STUD BOLTS
- MAIN STUD BOLTS
- HEAD STUD BOLTS
- MAIN STUD BOLTS (Evo4-)
- FORGED CONROD BOLTS
- HEAD STUD BOLTS
- MAIN BOLTS
- STRENGTHENED 4AG FLYWHEEL BOLTS
- HEAD STUD BOLTS
- MAIN STUD LADDER SET
OIL LUBRICATION
- OIL THERMOSTAT KILLER
- OIL THERMOSTAT KILLER
- UNIVERSAL OIL PAN BAFFLE PLATE
- OIL PAN BAFFLE PLATE
- OIL PAN BAFFLE PLATE TYPE F1
- OIL PAN BAFFLE PLATE TYPE F2
- OIL PAN BAFFLE PLATE TYPE R
- OVERSIZED OIL PUMP
- OVERSIZED OIL PUMP
- OVERSIZED OIL PUMP
- OIL GALLERY ORFICE
- OVERSIZED OIL PAN
- ALUMINUM OIL PAN
- ALUMINUM OIL PAN GASKET
- N2 OIL BLOCK
- SLICING BAFFLE
- BAFFLE STIFFENER
- BAFFLE STIFFENER
- OIL PAN BAFFLE PLATE
TURBOS
OTHER ENGINE PARTS
- METAL ORNAMENT PLATE
- METAL ORNAMENT PLATE
- ATI SUPER DAMPER
- ATI SUPER DAMPER(for 2JZ36KIT)
- ALTERNATOR RELOCATION BRACKET
- ALTERNATOR RELOCATION BRACKET
- FLOOR SUPPORT BAR
- TCT RELEASE BAR
- ASSEMBLY PASTE
- THROTTLE COAT
INTAKE
- FULL CAST EXHAUST MANIFOLD
- EXHAUST MANIFOLD
- FULL CAST TURBO OUTLET
- FULL CAST TURBO OUTLET PIPE
- TURBO SUCTION HOSE
- TURBO SUCTION HOSE
- TURBO SUCTION HOSE
- TURBO SUCTION PIPE
- TITANIUM AIR INTAKE PIPE
- TITANIUM INTAKE PIPE
- STRENGTHENED BLOW OFF VALVE
- INTAKE MANIFOLD KIT for NISSAN A
- (R)PS13用 インテークアダプターキットINTAKE ADAPTER KIT for (R)PS13
EXPREME
- TURBO OUTLET
- TURBO OUTLET
- OUTLET COMPONENT
- EXHAUST MANIFOLD
- EXHAUST MANIFOLD(GC8/GDB A,B)
- EXHAUST MANIFOLD *EQUAL LENGTH (GC8/GDB A,B)
- EXHAUST MANIFOLD(GDB/GRB/GVB)
- EXHAUST MANIFOLD Ver.2
- EXHAUST MANIFOLD
- HEAT SHEILD
- OUTLET COMPONENT Ver.2
- TURBO OUTLET PIPE
- JOINT PIPE
- EXHAUST MANIFOLD
Ti SPORTS
Ti RACING
- TITANIUM MUFFLER
- TITANIUM MUFFLER
- TITANIUM MUFFLER
- TITANIUM FRONT PIPE
- TITANIUM MID Y PIPE(350Z/370Z)
EXPREME Ti
- TITANIUM MUFFLER
- TITANIUM CAT STRAIGHT PIPE
- TITANIUM MUFFLER
- TITANIUM CAT STRAIGHT PIPE NISSAN TYPE-A
- TITANIUM MUFFLER
- TITANIUM MUFFLER
- TITANIUM MUFFLER
- TITANIUM CAT STRAIGHT PIPE
- TITANIUM MUFFLER
- TITANIUM CAT STRAIGHT PIPE
- TITANIUM MUFFLER WRX/LEVORG
FUEL PARTS
- FUEL RAIL
- OVERSIZED FUEL PUMP(FD3S)
- OVERSIZED FUEL PUMP(JZX100)
- OVERSIZED FUEL PUMP(EVO4-6)
- FUEL PRESSURE REGULATOR
- FUEL PRESSURE GUAGE
DRIVE TRAIN
- 3.9:1 FINAL GEAR KIT
- HICASS LOCK II TYPE B
- HICASS COMPUTER LAYOUT
- TECHNICAL TRAX/ ADVANCE LSD
- TECHNICAL TRAX/ ADVANCE LSD PRODUCTS APPLICATION
ELECTRICAL
BODY
DISCONTINUED
STROKER KITS
BOTTOM END INTERNALS
BOLTS
OTHER
TURBOS
- ARMS M7960
- ARMS M7760/7960/8265 Single Scroll
- ARMS M7760 Twin Scroll
- T380B EJ/TS Twin Scroll
- ARMS M7960
- ARMS M8280
- ARMS M7655/8260
- ARMS M8280
- ARMS M8270/7960
- ARMS M8265
INTAKE
EXPREME
- EXHAUST SYSTEM
- METAL CATALYZER / FRONT PIPE
- EXHAUST MANIFOLD
- STRAIGHT DOWN PIPE for WRX STI USDM Ver.2
- EXHAUST MANIFOLD
- METAL CATALYZER
- STRAIGHT FRONT PIPE
- EXHAUST MANIFOLD
- EXHAUST MANIFOLD
- TURBO OUTLET
- TURBO OUTLET
EXPREME Ti
Ti RACING
FUEL PARTS
- OVERSIZED FUEL PUMP(PS13)
- OVERSIZED FUEL PUMP(S14)
- OVERSIZED FUEL PUMP(EVO4-9)
- P.M.B.C
- Z32 AIR FLOW COUPLER
- FUEL PUMP RELAY HARNESS
- FUEL RAIL
- OVERSIZED INJECTORS
DRIVE TRAIN
ELECTRICAL
BODY
Keiichi Suzuki was a NISSAN Works Team Driver as well as a mechanic, and other “JOHOKU RIDERS” launched “TOMEI MOTOR Inc”.
That’s right,”TOMEI” was created as a consequence of those car guys gathered.
Although “TOMEI MOTOR Inc.”later changed its name to “TOMEI POWERED”,
its spirit and passion has been inherited, just for more powerful and stronger engine.
In the very beginning we started of as a racing constructor of NISSAN type engines only and since day one we have produced & tuned many racing engines.
Our standard procedures with the biginning of each new engine development, is to thoroughly inspect each engine component thoroughli for every aspevt of each part after disassembling and cleaning each part.
This is our daily routine and habit.
We foumd this to be the best procedure to find and address the engines good points, weak points and it helps us to accurately re-evaluate it for its new purpose.
We then rebuild it and make it close to the original but a new stronger complete ideal balanced engine.
This is the basic procedures of our complete engine development.
We now make many complete engines of various brands and we’re not only limited to NISSAN engines.
But our procedures and goals remain the same since day one. We never neglect anyone nor do we risk taking any shortcuts as to make a better engine will always take time to forge every engine to perfection.
The end result is a complete product which has passed all these enduring processes to bring the best performance available that both we and the end user can be proud of and have every bit of confidence in our products and their cars performance.
TOMEI will keep challenging to make you satisfied.
Thank you very much for your continued support
As we have already announced, the original products of Tomei Powered USA Inc. starting with “T” in their part numbers are not designed, supervised, tested, manufactured or quality checked by us Tomei Powered Inc.
Now from March 2019, everything not only the “T” items Tomei Powered USA Inc. sells is their original product which is not from us Tomei Powered Inc. since the license contract we made with Tomei Powered USA Inc. has now expired as of the 28th of February 2019.
Please be advised we do not take any responsibility and we are not liable for any damage or loss through use of the original products of Tomei Powered USA Inc.
We sincerely apologize for any inconvenience this may cause, and much appreciate your understanding in this matter.
Vehicle / Engine Manufacturer | Nissan |
---|---|
Product Brand | Tomei Japan |
Part Type | Valve Springs & Retainers |
Manufacturer | Nissan |
Model | FairladyZ, Skyline |
Variant | R32, Z32 300ZX |
Engine | RB20DET, VG30DETT |
Lead Time | 2-3 Weeks |