search

CAMSHAFT SET PONCAM CA18DE(T) 258-8.50

parts # TA301B-NS11A
msrp $580.00
engine NISSAN CA18DE, NISSAN CA18DET
model NISSAN 13 SILVIA, NISSAN 180SX
main category HEAD RELATED
sub category CAMSHAFT
shipping size 22 x 8 x 5 inch / 55 x 19 x 13 cm
shipping weight 12 lbs / 6 kg
qty in stock 22
note In Stock Now!

Resources

Item Description

ENGINECA18DE(T)
MODELS13
IN/EXINEXINEX
DURATION258272
CAM LFIT8.510.25
PART NO.TA301D-NS11ATA301F-NS11ATA301C-NS11ATA301E-NS11A
SET PART NO.TA301B-NS11ATA301A-NS11A
REQUIRED
PARTS
VALVE
SPRING
PART NO.
TA304A-NS11ATA304A-NS11A
VALVE
LIFTERS
PART NO.
OEMTA307A-NS11A
VALVE
SHIMS
PART NO.
 TA307E-NS***
CAMGEARS
PART NO.
OEMAdjustable Type

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.

valc_gluf.jpg

1⃣

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. ①) which in turn generates more power. (Greater area under the 'lift curve' = greater air intake)

CAM ACCELERATION CAM ACCELERATION
LOW

HIGH

LIFT LIFT
LOW

HIGH

AIR INTAKE AIR INTAKE
LOW

HIGH

2⃣

Unlike the valve opening, the VALC profile ensures that the valves close at a slower rate, helping to prevent common valve train related issues.

3⃣

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. (see fig. ②)

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. (Maximum cam velocity = lobe travel distance on lifter) 

cam_lifter_01_s.jpg
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

a.jpg