Early Evo engine noise
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Early Evo engine noise
The engine is a remmanufactured HD engine from 2003, 75K miles. I have a noise sounding from the engine. Took it by an indy who thought it was the cam bearing. I replaced the bearing which was dead, cam bearing surface was 50% chewed up. New torrington bearing and EV27 cam. Lifters appeared good. The old cam lobes looked good, contact didn't indicate anything. Measured the cam with caliper, didn't have the .105/.108 gauge pins. Cam gear was the same. Started the engine and still have the noise, sounding like a bearing failing whine/buzz. Most of the noise is on the front cylinder through the case to the left side. Used a mechanic stetchsoscope and found most noise on the front lifter block and front cylinder. The rear had less noise. Could I have a bad lifter bearing or maybe the front rod bearing with noise transfering to the piston, cylinder, case. The noise lessens as I listen to the lower case. Most noise on the right side of the engine. I'm not sure what to look at now. Any suggestions?
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