I got 130K on my stock motor, it doesn't seem to make any additional power over 4000 RPMs.. Could this be attributed to tired valve springs? How big of a job is it to replace them? I've never done it before, but I do have a torque wrench. What kind of lose performance could I expect to restore? Thanks Guys,
Throttle response and high end power will improve alot.
I actually have a set of fairly new springs and retainers if you are interested. They were installed but then the motor took water and wiped the cam.
How much?
1/2 what new is, about $35.
Sounds like a good deal.