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TOMEI

Tomei PROCAM BP-ZE NB8C IN 252-10.0mm

Tomei PROCAM BP-ZE NB8C IN 252-10.0mm

SKU: 1497252100
Regular price $370.00
Regular price Sale price $370.00
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PRODUCT INFO



APPLICATION DURATION(°) MAX CAM LIFT(mm) IN/EX P/N NOTE
ENGINE MODEL IN EX IN EX
BP-ZE NB8C EARLY 252 256 10.00 10.00 IN & EX Set 143054 Lifter & Shim x16 included
BP-VE NB8C LATE 252 256 10.80 10.00 IN & EX Set 143055

※PRESET VALVE TIMING
※STOCK VALVE SPRING COMPATIBLE


【For Repair】

PRODUCT P/N NOTE
CAMSHAFT BP-ZE
NB8C EARLY
IN Duration 252 / CAM Lift 10.00 1497252100
EX Duration 256 / CAM Lift 10.00 1498256100
BP-VE
NB8C LATE
IN Duration 252 / CAM Lift 10.80 1499252108
EX Duration 256 / CAM Lift 10.00 1498256100
LIFTER 16pc SET 163041
EACH 161091
SHIM EACH
Different shim size options are available.
Sizes ranging from 2.000~3.650mm at intervals of 0.05mm available.

FEATURE / SPEC



■Designed to optimise the true performance potential of the NA engine throughout the entire RPM range.
・Superior Response: Amazing engine response with light throttle movements.
・Stable Mid Range: More smooth mid range response.
・Rev Harder: Will rev much faster & rev to redline quicker than ever before.

■Keep the stock car drivability feel & comfort.
・Stable idling: The idling is not affected and still feels like stock.
・Unwanted noise: Precision design helped eliminate tappet noise.

■The inner shim conversion is designed for the high cam lift conversion.
・Head Work: Can be fitted as normal on stock head.
・You will see performance gains even on the stock ECU.

■Adjustments to VVT(BP-VE)
・The late model NB8C Performance output is Improved by changing the valve timing on the intake side.Thus improving mid RPM range.


■ SPEC
ENGINE Duration Max Cam lift (mm) IN/EX Max Valve lift (mm) Cold Valve Clearance
(mm)[±0.01]
Valve Timing Centerline
(Deg)
Base circle Note
BP-ZE
(NB8C EARLY)
252 10.00 IN 9.80 0.20 110 33.0 SOLID
256 10.00 EX 9.75 0.25 110
BP-VE
(NB8C LATE)
252 10.80 IN 10.60 0.20 125 33.0
256 10.00 EX 9.75 0.25 110


Theme of TOMEI CAMSHAFT

Asymmetrical G-Controlled Profile

When opening the intake valve during high acceleration the G from the camshaft requires to send as much mixture to the cylinder in the shortest time possible. However if the speed is too high it can damaged the Valves, Valve Seats and Valve Springs if the Acceleration G is too high. The Asymmetrical profile design given to the camshafts will allow the Intake and Exhaust Valves to fulfill the target requirement with the wider duration and high lift without damaging the Valve System.

Maximizing the Valves Efficiency



The general purpose of engine tuning is to change the torque characteristics of the engine by changing the cams duration timing and cam lift amount for maximum torque and horse power. However tuning the engine is not only based on that. When going into finer details by maximizing the Valves efficiency is not just about timing and height lift but to also maximize the intake efficiency. The high valve lift allows huge amounts of air in but at the same time it mechanically damages the valve train and gains added friction loss. Longer cam durations and big cam lifts give deliver more power at higher engine speeds but it also gives a rough idle and at low engine speeds. Tomei engineers worked hard to produce camshafts that will deliver a well balanced profile at 1.3-1.5 times more than the stock camshaft.

Quality Control

Every camshaft is carefully built through these production processes. Plus, strict inspection will be given to them and only the highest quality products are shipped.

Surface Coating


Coating the surface of camshaft with manganese phosphate in order to protect from damage even when the camshaft has not lubricated yet. This has done by steeping press process that produces 0.5mm to 15 micromillimeter thin of manganese phosphate coating on its surface to prevent from direct contact with other metal parts while realizing smooth operation.

CNC Super Precise High Speed Grinding



The combination of a ultra high-speed main bearing and diamond grindstone is controlled by the computer. By using the same special-purpose machine as an automaker, high precision grinding is realized though in 1/3 period of time. Consequently, incredible accuracy of profile and remarkable price were realized at the same time.

Wavy Groove Finish by Oscillation Grinding

Wavy groove is curved to the cam profile surface by oscillation during cam grinding process. Oil pool that is formed on the cam profile surface reduces a friction loss and prevents locking.
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