-
NISSAN SR20DET CAMSHAFT  
 
IN
EX
 EASY TO INSTALL / DIRECT REPLACEMENT /
 HIGH PERFORMANCE
Designed for hydraulic lash adjusters
Noticeable, linear gains in performance
Works best with 'bolt-on replacement' type turbos
Pre-set valve timing
Works with stock valve springs
Stable idling
SINGLE MSRP190.00(USD)
SET MSRP380.00(USD)
*Sold as a set of 2 (IN and EX)
Duration
(° )
Max valve
lift
immj
Application
IN/
EX
Single P/N
Set P/N
258
11.50
PS13
IN
TA301D-NS08A
TA301B-NS08A
EX TA301F-NS08A
S14/S15
IN
TA301D-NS08B TA301B-NS08B
EX TA301F-NS08A
Duration
(° )
Max
valve
lift
immj
Application
IN/
EX
Max
cam
lift
imm)
Cold valve
clearance
immjm±0.01n

Valve
timing
center
Line (° )

Base
circle
(Φ)
Stock
valve spring
compatible
Stock
valve Lifter
compatible
258
11.50
PS13
IN
7.41
-
110
32.0
EX
7.41
-
115
S14/S15
IN
7.41
-
120
EX
7.41
-
115
 
 FOR THE PRO-TUNER
Designed for solid lash adjusters
High power/rpm compatible
Works great with a variety of setups
Unleashes full potential with a professional tune
SINGLE MSRP190.00(USD)
SET MSRP380.00(USD)
*Sold as a set of 2 (IN and EX)
Duration
(° )
Max valve
lift
immj
Application
IN/
EX
Single P/N
Set P/N
272
12.50
PS13
IN
TA301C-NS08A
TA301A-NS08A
EX TA301E-NS08A
S14/S15
IN
TA301C-NS08B TA301A-NS08B
EX TA301E-NS08A
Duration
(° )
Max valve
lift
immj
Application
IN/
EX
Max
cam lift
imm)
Cold valve
clearance
immjm±0.01n

Valve timing
center
Line (° )

Base
circle
(Φ)
Stock
valve spring
compatible
Stock
valve Lifter
compatible
272
12.50
PS13
IN
8.15
0.15
110
32.0
*1
*2
EX
8.15
0.15
115
S14/S15
IN
8.15
0.15
120
EX
8.15
0.15
115
*1 TOMEI SR20DET TYPE-A Valve Springs required for installation (P/N 173004) .
*2 TOMEI SOLID PIVOTS required for installation (P/N 163003) .
 
''VALC' profile features- Velocity, Acceleration, Lift, Control
 Optimized 'velocity' and 'acceleration'.
 Designed for high power setups.
 Optimizes engine performance.
 Reduced stress/wear on the valve train.
 Reduced lash adjuster noise
 
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.
Highest lift amount that's compatible with the stock valve springs for increased flow rate and higher power output.
PRECISION MACHINING
LOBE HEIGHT
Machining each lobe to the strictest tolerances allows for smoother and more precise adjustments in valve clearances.
Based on: 12.50mm max lift, Φ32 base circle
SPEC. 40.150mm
ACTUAL (avg.) 40.156mm
DIFFERENCE (avg.) 0.006mm
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°10′57″(0.182°)
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.