Engine Kits

Clevite CB1228P 77 TriMetal Rod Bearings
Click On Image To Enlarge

Clevite CB1228P 77 TriMetal Rod Bearings



Part #: CB1228P
List Price: $8.58
Our Price: $5.25
You Save: $3.33

View Optional Components

General Motors Clevite 77, Tri-Metal Connecting Rod Bearing fits the following:
181 cid 3.0l buick v6 cylinder 1982-1988,
231 cid 3.8l turbo buick turbocharged v6 cylinder 1978-1989,
196 cid 3.2l lc9 buick v6 cylinder 1978-1979,
252 cid 4.1l lc4 buick v6 cylinder 1980-1984,
204 cid 3.3l lg7 buick v6 cylinder 1989-1990,
231 cid 3.8l carbureted buick v6 cylinder 1977-1987 note:  even fire engine,
231 cid 3.8l fuel injected buick v6 cylinder 1984-2004 note: 1984-1989, 1991 vin c.

clevite 77, tri-metal connecting rod bearing is a steel backed bearing with an intermediate layer of copper-lead alloy and a electro-plated lead-base overlay. percision undersizes are not resizable.

clevite connecting rod bearing part number: cb1228p  (standard).

Clevite 77 TriMetal Rod bearings have been the industry standard since the first patent on the cast, copper, lead composition decades ago. The success and notoriety Clevite 77 has earned on the track proves the commitment to excellence maintained by all who contribute to the Clevite 77 brand. This track success provides Clevite 77 the ultimate proving ground for technologies that yield results in all passenger car and light vehicle applications.

Engineering quality engine bearings involves a number of interdependent factors. These points are just a few of the advantages Clevite 77 TriMetal Rod bearings:

It takes Three Layers to be Number One, and Clevite 77 TriMetal are it !

Seizure Resistance:
TriMetal bearings have significantly greater seizure resistance than bi-metal bearings, by as much as 40%.
Load Capacity:
TriMetal bearings can withstand much higher loads for longer periods of time as compared to bi-metal bearings, over 60% higher.
Embedability & Conformability:
The overlay on a TriMetal bearing offers a far more forgiving surface than bi-metal bearings. These features may not be as critical during OE assembly as they once were, but they do offer additional protection that can be extremely beneficial in an engine that is poorly maintained.
Durability:
Clevite 77’s TriMetal bearings not only exceed light vehicle OE durability requirements of 150,000 miles, they also exceed heavy vehicle OE durability requirements of 300,000 miles.
Tolerances:
Because the surface layer of a TriMetal bearing adds an additional manufacturing step, Clevite regularly hold wall sizes to within .0005” as compared to a bimetal that can be held to within .0003”. This stack up of tolerances has nothing to do with quality,  suitability, or service life.
Wear Resistance:
While the silicon in the bi-metal material does contribute to slightly improved wear resistance as compared to the Babbitt surface layer of a TriMetal material, it’s at the direct expense of embedability and conformability.

not all tri-metal engine bearings are the same - so if you want the strongest, highest quality engine bearings, ask for the original clevite 77 tri-metal engine bearings.

material: tm-77
min. std. shaft diameter: 2.2487"
57.1170mm
max. std. shaft diameter: 2.2495"
57.1373mm
min. vert. oil clearance: 0.0005"
0.0127mm
max. vert. oil clearance: 0.0030"
0.0762mm
max. wall: 0.0619"
1.5723mm
min. brg. o.d. or housing bore: 2.3738"
60.2945mm
max. brg. o.d. or housing bore: 2.3745"
60.3123mm
max. length: 0.6590"
16.7386mm

competitor interchanges
qty
comp qty
comp part no.
comp name
1
6
6b1228p-std
acl
1
1
cb1228p
clemex
1
1
cb1228p
hi-tech
1
6
cr6616si
king
1
6
bb605j
mahle
1
1
6754a
mcquay-norris inc.
1
1
6754cp
mcquay-norris inc.
1
1
2990cap
michigan engine bearings
1
1
3755a
sealed power
1
6
6-3755a
sealed power
1
1
3755ap
sealed power
1
6
6-3755ap
sealed power
1
1
cb1228p
trw
*part of a combination interchange requiring multiple parts competitor parts
when installing any bearing
do not attempt to polish the bearing running surface with any type of abrasive pad or paper.
bearing overlay layers are extremely soft and thin, typically .0005” on high performance parts.
these thin layers can easily be damaged or removed by abrasive media. because the overlay layer is electroplated,
it may exhibit microscopic plating nodules that make it feel slightly rough.
the nodules are the same material as the rest of the plated layer and will quickly be flattened by the shaft.
Bearing Material Tri metal, TM-77
Bearing Usage Direct replacement
Brand Clevite Engine Parts
Chamfered Bearing No
Dowel Pin Hole No
Grooved Bearing No
Part Type Rod Bearings
Product Line Clevite P-Series Rod Bearings
Quantity Sold individually.
Required Options:
Upgrade Options:
Rod Bearing Oversize: