Skip to product information
1 of 1

TOMEI

Tomei PROCAM RB26DETT IN 280-10.8mm

Tomei PROCAM RB26DETT IN 280-10.8mm

SKU: 1421280108
Regular price £272.08
Regular price Sale price £272.08
Sale Sold out
Tax included.

Some items may take 3-5 days to ship.

PRODUCT INFO



TYPE APPLICATION DURATION(°) MAX CAM LIFT(mm) IN/EX P/N
ENGINE MODEL IN EX IN EX
A RB26DETT BNR32/BCNR33 260 252 9.15 9.15 IN & EX Set 143036
BNR34 143037
B BNR32/BCNR33 260 260 9.15 9.15 IN & EX Set 143005
BNR34 143018
R BNR32/BCNR33 250 250 9.15 9.15 IN & EX Set 143051
BNR34 143052

※PRESET VALVE TIMING
※STOCK VALVE SPRING COMPATIBLE
※Using this product may require additional work on the cylinder head to allow clearance for the hight cam lobe.
The amount of clearance required will vary from each cylinder head.
First check with the camshaft fitted to see how much modification is required on the cylinder head to allow adequate clearance for the high cam lobes.




APPLICATION DURATION(°) TYPE MAX CAM LIFT(mm) IN/EX P/N NOTE
RB26DETT 250 9.15 IN 1421250091 PONCAM
EX BNR32/BCNR33 1422250091 PONCAM
BNR34 1426250091
252 LOW 9.15 IN 1421252091
EX BNR32/BCNR33 1422252091 PONCAM
BNR34 1426252091
260 LOW 9.15 IN 1421260091 PONCAM
EX BNR32/BCNR33 1422260091 PONCAM
BNR34 1426260091
MID 10.25 IN 1421260102
EX BNR32/BCNR33 1422260102
BNR34 1426260102
HI 10.80 IN 1421260108
EX BNR32/BCNR33 1422260108
BNR34 1426260108
270 MID 10.25 IN 1421270102
EX BNR32/BCNR33 1422270102
BNR34 1426270102
HI 10.80 IN 1421270108
EX BNR32/BCNR33 1422270108
BNR34 1426270108
280 HI 10.80 IN 1421280108
EX BNR32/BCNR33 1422280108
BNR34 1426280108
SUPER
HI
11.50 IN 1421280115
EX BNR32/BCNR33 1422280115
BNR34 1426280115
290 SUPER
HI
11.50 IN 1421290115
EX BNR32/BCNR33 1422290115
BNR34 1426290115

※Adjust Shims may be required for some models.
※Tomei Lifters are required for MID, HI, SUPER HI types.
※Uprated Valve Springs are also required for MID, HI, SUPER HI types.
※Using this product may require additional work on the cylinder head to allow clearance for the hight cam lobe.
The amount of clearance required will vary from each cylinder head.
First check with the camshaft fitted to see how much modification is required on the cylinder head to allow adequate clearance for the high cam lobes.

FEATURE / SPEC



■ Type A
Designed to best suit the stock & N1 turbos for optimum performance balance of low to mid range torque.
The Exhaust cams duration was reduced to maintain best idling.

■ Type B
By extending the duration timing compared to the Type A Poncams, both response and peak power was raised and these camshafts best compliment the mid to large size turbo charged applications.

■ TYPE R(for Stock Cat. Equiped Cars)
The Type R camshafts were designed due to popular demand from end users who are looking at upgrading the performance potential of their GTR while staying within the limits of recent street legal requirements.
Recent laws on emissions and exhaust noise was made stricter in Japan so to have a quieter car by running smaller exhaust systems raises the exhaust back pressure which greatly reduces the response and hinder performance. Our engineers then designed these Type R camshafts to suit the needs of those who need to keep such setup and benefit with performance gains.

TYPE A TYPE B TYPE R
RECOMMENDED SETUP CATALYTIC
CONVERTER
Sports Catalytic Converter
or Straight Pipe
Sports Catalytic Converter
or Straight Pipe
Sports Catalytic Converter or Straight Pipe
TURBO Stock or
Larger Bolt On Type
N1 or
Full Turbo Kit Upgrade
Stock or N1 Turbos
Peak Power Comparison
(for Stock Cat. Equiped Cars)
405 ps 406,33 ps 404,65 ps



■ 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
RB26DETT  250 9.15 IN 8.70 0.45 110 32 PONCAM
EX 8.77 0.38 110 PONCAM
252 9.15 IN 8.70 0.45 110
EX 8.77 0.38 115 PONCAM
260  9.15 IN 8.70 0.45 110 PONCAM
EX 8.77 0.38 115 PONCAM
10.25 IN 9.80 0.45 110 30           
EX 9.87 0.38 115
10.80 IN 10.35 0.45 110
EX 10.42 0.38 115
270 10.25 IN 9.80 0.45 110
EX 9.87 0.38 115
10.80 IN 10.35 0.45 110
EX 10.42 0.38 115
280 10.80 IN 10.35 0.45 110
EX 10.42 0.38 115
11.50 IN 11.05 0.45 110
EX 11.12 0.38 115
290 11.50 IN 11.05 0.45 110
EX 11.12 0.38 115


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.



Factory Camshaft specs


Engine Model Type Cam Duration/IN (°) Cam Duration/EX (°) Cam lift/IN (mm) Cam lift/EX (mm) Pre-Set Valve Timing/IN (°) Pre-Set Valve Timing/EX (°) NVCS NVCS range(rpm)
RB26DETT  BNR32 Solid 240 236 8.58 8.28 113 125 None
BCNR33
BCNR33 N1 120
BNR34 117 121
BNR34 N1
View full details