Post build Top end clatter.... can't fix it!!!
Stellar HDF Member
Joined: Mar 2017
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Valve train harmonics meaning, clatter at different rpms normal after performance mods. Loud rapping clatter all the time problem.this is my opinion based on my experience. My 103 with S&s cams, premium lifters and push rods, head work and rock outs has some light clatter at different rpms.
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Stellar HDF Member
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From: Aussie lost in Switzerland
Valve train harmonics meaning, clatter at different rpms normal after performance mods. Loud rapping clatter all the time problem.this is my opinion based on my experience. My 103 with S&s cams, premium lifters and push rods, head work and rock outs has some light clatter at different rpms.
Guess I'll have to pull it apart again on the weekend see if I can find what I've missed......
Stellar HDF Member
Joined: Mar 2017
Posts: 3,321
Likes: 1,884
When I did the cam on my Evo the new S&s push rods we’re hitting the tubes after it warmed up and expanded. I could feel them hitting by just putting finger pressure on the tubes. I never had the spring hitting rocker problem, it is possible when you go to bigger springs. Good luck with it!
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