Reply to "Engine setting procedure?"

bosswrenchMember

Peter, be very careful in drawing conclusions from your timing marks until it's verified that the two-piece harmonic balancer has not shifted with age. The outer ring was pressed together with a rubber strip in between it and the hub, and age tends to shrink rubber. This allows the press-fit to slacken and the outer ring to shift backward. moving the timing marks towards 'retard'. I've seen visually undamaged but over-age balancers in which the sacred timing mark was 160 degrees off! I've also seen 43-year-old balancers in which the mark was perfectly aligned.

If it turns out yours is still correct, many of us make a chisel or a scribe mark (or even paint) across both halves of the balancer and check those index marks periodically to verify the parts haven't moved.

11/12/1412:13 AM

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