Unlike a similar 8-valve engine, the sixteen-valve is much quieter, more economical and does not cause any inconvenience with strong vibrations. The timing belt with rollers is replaced every 60 thousand km, the generator belt is usually changed along with it, the water pump runs 2 - 3 replacements. The air filter and candles usually last twice as long. It includes almost 5 liters of 5W-40 or 5W-30 oil. The dealer recommends an oil service every 15 thousand km.
The uprated valve can install following the OEM valve installation menuĪ: Yes the springs can be installed in the same way the standard springs are installed, no special tool is needed.The engine does not tolerate 92nd gasoline well. I'm building a complete new K4M engine and looking for performance valve replacementĬan you give the dimenssion of the F4R uprated valve set to see if I can fit the in the k4m with some remachiningĪ: Hello, for the inlet valves the sizes are head diameter 33.5mm, stem diameter 5.47mm and length 110.05mm, the exhaust valves are head diameter 29.00mm, stem diameter 5.44mm and length 108.90mm. Why not submit a review?įrequently asked questions about this item are shown below. There are currently no reviews for this product. The price is for a set of 8 inlet or 8 exhaust valves which are listed separately from the drop down menu.įor Clio 2RS & 3RS non turbo exhaust valves, please contact us as Supertech are no longer making these. We have seen many cases where tuned engines have suffered the valve heads breaking off on high revving engines, installing uprated valves will prevent this from happening.Įqually Turbo charged engines with Higher Exhaust Gas Temperatures will gain stability and strength from installing these valves. In both cases the valves are significantly stronger than the standard items. The exhaust valves are made from inconel which is a lightweight metal which is used to handle the extreme heat generated by highly tuned engines.
The inlet valves are made from high grade stainless steel and are black nitride coated for added durability and for reduced friction. The uprated valves are designed to withstand all of the additional strains and temperatures they may be exposed to in competition or highly tuned performance engines. When increasing the power, rev limitations or exhaust gas temperatures you need to upgrade the valves and valve springs.