Plastigauge comes with a scale on the paper packaging. You apply a
thread of Plastigauge across the bearing surface then tighten the cap.
DO NOT oil the bearings and DO NOT rotate the crank. Then remove the cap
and compare the width of the crushed plastic thread against the
comparison chart on the Plastigauge package. You will not need a
micrometer to check the width.
Best regards,
A.J. (Jim) Seippel
jim.seippel@siemenscom.com
>-----Original Message-----
>From: mike neff [SMTP:proraly@worldnet.att.net]
>Sent: Monday, January 19, 1998 6:09 PM
>To: Guy Weller; spridgets list
>Subject: Re: Bearings - how tight should they be?
>
>go to your nearest automotive repair shop and find
>some plastigauge. it installs between the bearing
>shell and crank surface. when you torque the
>bearing to the recommended reading, it crushes.
>DO NOT rotate the crank with this installed. use
>some on each main and rod bearing surface. when
>you have completed this operation, remove the
>bearing caps and measure the plastigauge (keeping
>track of where each piece came from). you will
>need a micrometer for this operation. this will
>tell you the bearing clearance for each bearing
>surface.
><snip>
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