Rocker arm fixture failed on the intake side at about 50 miles after assembly. Ali cam similar to 290 (stock lift with longer duration),
Ebay roller lifters, Ali 70MM cylinder with .025" inch shaved off, Motocult thin head gasket (-.030"-ish), Motocult rocker arm spacer plate. It ran noisy from the start after initial run, I rechecked the valve lash which was still at .004". It ran great until it failed all at once while in slow speed cruse. I'm not finding any signs of valve clearance problems. Thinking that possibly the roller lifters are a different ratio causing the springs to bind or possible they are just a different geometry, anyone have any ideas.
06-09-2024, 11:48 PM
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