|
Sounds like your engine builder might be right, it sounds like there is too much pressure on the spring. If you are running a serious high lift cam or a hydraulic roller cam with anti pump up lifters (worse yet, solid lifters), you can experience the same kind of valve spring binding or breakage. What kind of cam are you running? Some solutions to the problem can be machining out the spring pockets if you want to keep all the parts you have, or swapping out the springs for some smaller ones. You could also go with a smaller lift on the cam. It's hard to say without knowing what your valve train and cam specs are.
I wouldn't fire your engine builder just yet. Have him check out the geometry of your valve train to ensure all the parts you have will work together.
BTW: How are your valves looking? None of them are bent or anything are they?
|