-
NISSAN RB26DETT CAMSHAFT  
 
IN
EX
Pre-set valve timing
Works best with 'bolt-on' type turbos
Stable idle
Compatible with stock valve springs
Noticable, linear gains in performance
SINGLE MSRP290.00(USD)
SET MSRP580.00(USD)
*Sold as a set of 2 (IN and EX)
Duration
(° )
Max cam
lift
immj
Application
IN/
EX
Single P/N
Set P/N
254
9.15
BNR32/ BCNR33
IN
TA301C-NS05A
TA301A-NS05A
EX TA301E-NS05A
BNR34
IN
TA301C-NS05A TA301A-NS05B
EX TA301E-NS05B
262
9.15
BNR32/ BCNR33
IN
TA301C-NS05B TA301A-NS05C
EX TA301E-NS05C
BNR34
IN
TA301C-NS05B
TA301A-NS05D
EX
TA301E-NS05D
Duration
(° )
Max cam
lift
immj
IN/
EX
Max
valve lift
imm)
Cold valve
clearance
immjm±0.01n

Valve timing
center
Line (° )

Base
circle
(Φ)
Stock
valve spring
compatible
Stock
valve Lifter
compatible
254
9.15
IN
8.70
0.45
110
32.0
EX
8.77
0.38
115
262
9.15
IN
8.70
0.45
110
EX
8.77
0.38
115
 
High spec profiles for professional tuners /applications
Designed for high power setups
SINGLE MSRP290.00(USD)
SET MSRP580.00(USD)
*Sold as a set of 2 (IN and EX)
Duration
(° )
Max cam
lift
immj
Application
IN/
EX
Single P/N
Set P/N
272
10.25
BNR32/ BCNR33
IN
TA301C-NS05C
TA301A-NS05E
EX TA301E-NS05E
BNR34
IN
TA301C-NS05C TA301A-NS05F
EX TA301E-NS05F
282
10.80
BNR32/ BCNR33
IN
TA301C-NS05D TA301A-NS05G
EX TA301E-NS05G
BNR34
IN
TA301C-NS05D
TA301A-NS05H
EX TA301E-NS05H
292
11.50
BNR32/ BCNR33
IN
TA301C-NS05E TA301A-NS05J
EX TA301E-NS05J
BNR34
IN
TA301C-NS05E TA301A-NS05K
EX
TA301E-NS05K
Duration
(° )
Max cam
lift
immj
IN/
EX
Max
valve lift
imm)
Cold valve
clearance
immjm±0.01n

Valve timing
center
Line (° )

Base
circle
(Φ)
Stock
valve spring
compatible
Stock
valve Lifter
compatible
272
10.25
IN
9.80
0.45
110
30.0
*1 or *2
*3
EX
9.87
0.38
115
282
10.80
IN
10.35
0.45
110
EX
10.42
0.38
115
292
11.50
IN
11.05
0.45
110
*2
EX
11.12
0.38
115
*1 TOMEI RB26 TYPE-A Valve Springs required for installation (P/N 173001) .
*2 TOMEI RB26 TYPE-B Valve Springs required for installation (P/N 173002) .
*3 TOMEI RB26 Valve Lifters required for installation (P/N TA307A-NS05A) .
''VALC' profile features- Velocity, Acceleration, Lift, Control
 Optimized 'velocity' and 'acceleration'.
 Designed for high power setups.
 Optimizes engine performance.
 Higher lift than other profiles of the duration.
 Reduced stress/wear on the valve train.
 
The VALC profile allows the valves to open faster and for longer. This translates to faster lift and increased area under the 'lift curve' (see fig. @)
which in turn generates more power. (Greater area under the 'lift curve' = greater air intake)  
@    
 
ECAM ACCELERATIONFLOW
ELIFTFLOW
EAIR INTAKEFLOW
  ECAM ACCELERATIONFHIGH
ELIFTFHIGH
EAIR INTAKEFHIGH
Unlike the valve opening, the VALC profile ensures that the valves close at a slower rate, helping to prevent common valve train related issues.
With a conventional direct-acting valve train, the maximum lift is usually determined by the size/diameter of the valve lifter. Selecting a high-lift camshaft without taking this into consideration often results in the camshaft lobes travelling beyond the surface of the valve lifter. This causes the lobe to make contact with the edge of the lifter, damaging both components over time. isee fig. Aj
Therefore, the ideal performance orientated high-lift camshaft needs to have a profile that maximizes lobe travel on the lifter without exceeding the outer edge.

VALC profile camshafts have achieved this ideal by deliberately reducing the maximum cam velocity to limit lobe travel on the lifter surface.@iMaximum cam velocity = lobe travel distance on lifter)@
A
High lift profile without taking lifter size/radius into account.
Compared to standard profile camshafts of the same lift, VALC profile camshafts are able to then then off-set the difference for even greater lift/performance gains.
Conventional profile based on lifter size/radius.
'VALC' profile.
''VALC' profile + additional lift.
Lift comparison between a conventional profile and 'VALC' profile.
 Conventional profile
 'VALC' profile
 'VALC' profile + additional lift.
PRECISION MACHINING
LOBE HEIGHT
Machining each lobe to the strictest tolerances allows for smoother and more precise adjustments in valve clearances.
Based on: 9.15mm max lift, Φ32 base circle
SPEC. 41.15mm
ACTUAL (avg.) 41.1455mm
DIFFERENCE (avg.) 0.0045mm
DIFFERENCE (%) 0.0001%
The greater this 'difference', the more shims and time required to adjust the valve clearance.
 
PHASE ANGLE
Lobe nose interrelationship (front view)
Strict phase angle tolerances minimizes the risk of valve timing issues and ensures each valve opens and closes precisely.
SPEC. See above
DIFFERENCE (avg.) 0°4′41″(0.078°)
DIFFERENCE (%) 0.0026%
Our research showed that some camshafts from other manufacturers had more than 5 degrees difference in the phase angle! This makes it near impossible to achieve the correct valve timing.