Tomei Poncam Camshaft Set 254 deg dur 9.15 mm for R34 Nissan RB26DETT
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. 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. Compatible with stock valve springs. Noticeable, linear gains in performance.