MAIN BEARING SET SB CHRYSLER 273, 318, 340, 1/2 GROOVE

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.