Quote:
Originally Posted by Jack Shaft
Standard insert bearings are of laminated construction, the babbit is applied to a base metal,usually copper or steel.With copper sometimes the copper is applied to steel,then the babbit is applied to copper.It appears the thin layer of babbit on your bearings is delaminating.
Leather belt? the story I was told was the tongue of a shoe,They also ran them on penny a quart 'drain' oil,Oil saved from regular customers cars service.
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AER inserts are described as bimetal, steel backing with aluminium silicon bearing surface. No babbitt in them. This information is from various sources including a long description from Vince Falter quoted by Updraught above in this topic.
SAJ in NZ