Real Speed Engineering / Tomei USA Spec-S Poncam Camshaft Set Fits Nissan S13 CA18DE(T)RA301B-NS11A
Quantity exceeds our current inventory for this item.
Additional items will be placed on backorder.
0In Stock - Kirrawee, NSW
Ships in 1-3 business days
Available for back order
Lead time 10-15 Days
Click & Collect available from Kirrawee, NSW
Delivery
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For orders dispatched from/within Australia we use the services of, Border Express, Australia Post Registered & Express, and local couriers for Sydney Metro deliveries.
Please note that in some circumstances we are not able to use your chosen shipping method.
For international orders we use the services of DHL/UPS. Please note that International Orders require longer processing times and may take up to 1-2 days to ship if the item is in stock.
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Tomei Spec-S Poncams are designed to work with the standard valve springs and offer the best drop-in performance gain for both street and track use. These cams will work with the OEM ECU settings and aftermarket ECU if you want more customised settings.
- Optimised 'velocity' and 'acceleration'.
- Designed for high power setups.
- Optimises 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. 1) which in turn generates more power. (Greater area under the 'lift curve' = greater air intake)
Unlike the valve opening, the VALC profile ensures that the valves close at a slower rate, helping to prevent common valve train related issues.
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. （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)
Compared to standard profile camshafts of the same lift, VALC profile camshafts are able to then off-set the difference for even greater lift/performance gains.
- Suit Nissan S13 CA18DE/T
- In & Ex Set Included
- 258 Degree
- 8.5mm Lift
Vehicle Compatibility:
- Nissan PS13 Silvia (CA18DE/T)
- Nissan RPS13 180SX (CA18DE/T)
Specifications
SKU RA301B-NS11A
Availability 10-15 Days
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