plain bearing material

["Giller,Bruce C." <bgiller@domain.elided>]

	Whilst rebuilding my 2 L engine, my local Alfa mech. said that I should
handle the main and big-end rod bearing shells with care.  I shouldn't
put my fingers on the inside surface of the shell least I make a scratch
or get a fingerprint on them.  Since I have to get the Plastigage off
the crank and the bearing, I do have to rub some WD40 soaked paper towel
on the bearing.

	The material is easy to scratch and some of the bearing top surface
does comes off on the paper towel.  The material reminds me of a babbitt
bearing.  Are they related?  Just how careful do I have to be with them
(other than keeping everything clean)?

	Bruce

	'73 GTV
	'86 Spider
	'72 Moto Guzzi Eldorado

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