[6pack] Bearing clearances and Plastiguage

Jerry C Shaw slowtoaccept at yahoo.com
Sun Aug 8 07:05:12 MDT 2010


Have lower oil pressure for a rebuilt engine than I would like.

What main and connecting rod bearing clearances are normal?

Used micrometer on all reground crank surfaces giving  0.010 undersize with
mains @  2.303" and crankpins @ 1.865" . Stupidly didn't check clearances
during installation assuming shells were 0.010  undersized as stated on the
box.

Also, one of the car mags says Plastigage is not accurate. See
http://www.carcraft.com/techfaq/116_0701_plastigage_vs_micrometer/index.html
Jerry
'74 TR6


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