MAIN BEARING SET HOLDEN VN V6ALSO BUICK V6

Description

P-Series Bearings

These are not
to be confused with the
standard passenger car and
light truck parts for the
same retention applications
which also have a “P” suffix
letter. These high
performance parts have unique
core part numbers different
from the standard parts for
the same application. P
series parts are the oldest
series of Clevite high
performance bearings. The rod
bearings in this series
typically have the greatest
amount of eccentricity. Most
rod bearings are available
either with or without dowel
holes for use in aluminium
rods. Most P series main sets
are full grooved to maximise
oil flow to the rod bearings.
Both rods and mains have high
crush for maximum retention,
and a reduced overlay
thickness to prevent overlay
fatigue, sometimes referred
to as hen tracking.

Rod
bearings use a hardened steel
back for added strength and
resistance to fretting. extra
clearance rod bearings are
available for .001″
additional clearance and
select fitting. Use the P
series rods where extremely
high RPM’s cause severe rod
bore close-in. This is
typically indicated by nearly
full parting line to parting
line shaft contact with
bearings having less
eccentricity. Use P series
mains where higher
eccentricity is desired to
narrow bearing contact
patterns and to provide
increased oiling to rod
bearings. Rod bearing oil
starvation is typically
indicated by polishing and
smearing of the bearing
surface, possibly accompanied
by discolouration
predominantly concentrated at
the axial center of the
bearings.