Tomei COMPETITION BEARING SERIES For Subaru

10-15 working days

New product

46.00 CHFtax incl.

ENGINE

MODEL

APPLICATION
 
GRADE
SIZE
GRADE
COLOR
NOTE
OEM
GRADE
PART No.
PRIX TTC
QTY
Required
Per Engine
SUBARU
EJ205
EJ207
EJ20Y
EJ255
EJ257
GD#
GR#
Main1&3
Upper/
Lower
Set
ej_main1-3.jpg
A
1.998~2.001
Black
126400
  46.-TTC  
2 SETS
B
2.001~2.004
Green
126401
C
2.004~2.007
Yellow
126402
Main2&4
Upper/
Lower
Set
ej_main2-4.jpg
A
1.998~2.001
Black
126403
41.-TTC
2 SETS
B
2.001~2.004
Green
126404
C
2.004~2.007
Yellow
126405
Main5
Upper/
Lower
Set
ej_main5.jpg
A
1.998~2.001
Black
126406
142.-TTC
1 SET
B
2.001~2.004
Green
126407
C
2.004~2.007
Yellow
126408
Conrod
Upper/
Lower
Set
ej_conrod.jpg
A
1.485~1.488
Black
127400
46.-TTC
4 SETS
B
1.488~1.491
Green
127401
C
1.491~1.494
Yellow
127402
D
1.494~1.497
Red
127403
Click to enlarge

OVERLAY (P76 Material)
The P76 material is used for it's superior abrasion and fatigue resistance. The elimination of the tin flash plating improves the heat transfer through the bearing.

F781 Material
The F781 material is used on connecting rod bearings for high performance engines. It has a hardened steel backing to improve the support of the bearing lining and assist bearing retention in the housing.

The combination of these material enhancements optimize bearing performance under high loads and temperatures.

 
Click to enlarge
The Competition Bearing Series are designed with an increased crush (i.e. extra bearing length of typically 0.100-0.175mm). The extra crush improves the retention of the bearing in it's housing.

Crush Height: The crush height is based on the bearing being a fraction longer than the housing seating so that a small section protrudes above the rod bore parting surface. When the rod halves are drawn together, the inserts touch before the halves, thus forcing the inserts tightly into place.
 
Click to enlarge
The wall thickness at the crown of the shell is thicker than the wall at 3/8" down from the parting face. These Competition Bearing Series have an increased amount of eccentricity to compensate for the bearing housing bore elongation in extreme conditions and to help create an effective hydrodynamic oil film.
 
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These Notches help with bearing alignment during fitment. They do not hold the bearings in place during operation, that is the function of “Crush”.
 
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The bore bearing surface finish method helps promote effective oil flow and to maintain adequate lubrication for both the bearings and other moving parts.
 
Click to enlarge
The design of the oil grooves on the lower main bearing shell is always a trade off between oil supply to the Conrods and the bearings load carrying capacity. These TOMEI Competition Bearings generally have a 3/4 groove to give optimum balance of oil flow whilst keeping optimum load carrying capacity.
Compatiblity Model: GD/GR
Engine : EJ205 EJ207 EJ20Y EJ255 EJ257

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