Technical & General Discussion Area > Tech Torque Pre 1973

Another engine vibration

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minipete:
I checked the timing today.  It was set at 11 deg BTDC 7 years ago and not altered since.

It now reads 20 deg BTDC.  The car still runs perfectly and I would assume at 20 deg I would get some kick back on the starter (it doesn't).

This is suspiciously like the outer ring on the balancer has slipped about 1cm.  Probably enough to make a vibration.

I can't get a good close look at it so will pull it off and inspect.

Thanks Sam for the call.

minipete:
Pulled the belt pulleys off and the balancer looks fine.

No sign of perished rubber and the outer ring is solid as a rock.  I'd happily replace it if I thought it would do any good.

Also the balance weights are on the inner ring so if the outer slipped it should not cause a vibration unless it was severely misaligned (it's not).

I marked where the key is in comprison to the TDC mark in the hope of finding a photo on line for comparison.

Pete

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