OM606.962 Valve Float @ raised boost?
OM606.962 Valve Float @ raised boost?
has anyone changed valve springs without removing the head? If this could be done without pulling the head then I may want to try that (If I find that EBP is above 4Bar absolute). Also- I'd probably only want to change the exhaust valve springs and increase the spring force about 50%... I wouldn't want to double the spring force since my goal is only to be able to rev up another 500-700 RPM to about 5000-5200 RPM because my OEM transmission controller shifts at around 4900 RPM @ WOT.