ok i'll try this tell me if anybody is confused or if i'm a dipshit!!
ok a power valve is just that it's a vavle. (i know only 4 strokes have valves right. not true but thats a totally differnt page long post lol)
the powervalve regulates how much exhaust the engine will let out. at low RPM the exhaust pressure is lower due to less air fuel mixture in the engine. therefore you have less exhaust to push out. think of it like this the smaller the passage the higher the pressure. so if you try and push this little bit of exhaust gas out a big exhaust port then the engine is running at that point very inefficent. the key is to have exhaust that equals your intake. to much exhaust mean not enough back pressure and threrefore no low end. the powervalve regualtes the exhaust back pressure. no back pressure or little back pressure is only good for high end power. the back preesure that a powervalve gives the engine down low makes torque. there fore youir low end power is there too. the powervalve runs off of engine RPM. at full throttle the vabvle is completely open. i hope this is helping and not confusing everybody.
oh yeah about the powervavle getting gummed up or clogged up from synthics. that because nobody has been looking at amsoil. interceptor and dominator are both great for powervalve engines.
somewhere on this site in the forums there is a good explaination taht i wrote bout the powervale thing. i'll try and find it  |