kamalez said:
Hi - Rooster, racing valve springs only to be changed if the engine is modified. If after market CDI are used then it is not required to upgrade to racing valve spring. Am i right???
valve spring changing is one of many ways to improve your engine's performance,
aftermarket CDI in this case a NO limit type is capable of making your engine to rev up higher than a stock CDI, usually stock vavle springs is softer than a aftermarket one..because your engine is gonna be screaming a lot higher than before you had a no limit CDI,
changing the valve spring is commonly used to solve the valve floating problem that happens on high RPMs
on some cases stock valve springs cannot cope with the engine high RPM
so i suggest you to change the valve springs too to a stiffer one
engine tuning requires time, effort and money too..
so if you gonna start hop up your engine please re-consider
because once you start to modify your t135 i must warn you it's ADDICTIVE..
