Does anyone know what tolerance value constitutes coil bind on a valve spring? Please see attached pictures. This is the spring I have installed and the valve is shown fully open - at max lift at the lobe (using a solid lifter for accurate measurements). The coils are not touching in three places (middle and the two next coils) and the max I can measure is about 30 thou (0.030") between middle coils. Coils are tight at the top and bottom. I read that there is no hard and fast rule with binding tolerance, it all varies between spring types and materials. From 0.020 to 120.
This is a hydraulic cam but I think these springs might be a little close for comfort (lift is advertised at 0.525/0.525). What are other people's thoughts on using these springs for running in this new cam? Thanks
This is a hydraulic cam but I think these springs might be a little close for comfort (lift is advertised at 0.525/0.525). What are other people's thoughts on using these springs for running in this new cam? Thanks
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