Quote:
Originally Posted by thewrench3
I had always used manley valves in the past. Never had a problem with them. These valves were a no name brand.
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Go back either to a Manley or Ferrea valve. Low cost valves made overseas tend to be softer. I have checked lower cost valves for hardness in the past, and there is a difference. Quality control for materials and processing is not the same with overseas made valves that are mass produced. They cannot sustain lean conditions and the higher spring pressures used in racing.