B.S.A. - continued

500cc Twins (Roller Bearing Models)

Year

Model

Con rod casting No.

Big end Part No.

Cage Part No

Small end Part No.

MAIN BEARINGS

Drive Side

Timing Side
1934-36 J34-11, J35-12, J36-12

31-261

B15

-

-

-

-

 

500 Twins (Plain Bearing Models)

Year

Model

Big end shell No.

Big end standard size

Small end No.

MAIN BEARINGS

Drive Side

Timing Side
1947-50 A7 & Star twin

B2024LC

(67-320)

1.4595

1.460

SE108

MS11

R130L

67-790

1.3745

1.375
1951-62 A7 Star twin & Shooting Star

B2024LC

(67-320)

1.4595

1.460

SE107

MS11

R130L

67-790

1.3745

1.375
1962-65 A50, Star twin, Cyclone, Royal Star & Wasp

B2024LC

(67-320)

1.4595

1.460

SE109

MS11

68-0015

1.3745

1.375
1966-69 A50, Royal Star & Wasp

B2024LC

(67-320)

1.4595

1.460

SE109

RM11L

68-0015

1.3745

1.375

 

557cc

Year

Model

Con rod casting No.

Big end Part No.

Cage Part No

Small end Part No.

MAIN BEARINGS

Drive Side

Timing Side
1925-31 H25, H26, H27, H28, H29, H30-8, H31-8.

24-280

B12

K8

-

-

-
1932-33 H32-9, H33-10 . . . . . . . . . . . .

24-280

B12

K8

-

-

-

 

600cc

Year

Model

Con rod casting No.

Big end Part No.

Cage Part No

Small end Part No.

MAIN BEARINGS

Drive Side

Timing Side
- Side Valve models

-

-

-

-

-

-

-
1934-36 M34-12, M35-10, M36-10

24-1599

B12

K8

SE18

-

-

-
1937-38 M21. . . . . . . . . . . . . . . . . .

66-481

B145

K121

SE15

325

R325L

RM9L
1939-59 M21. . . . . . . . . . . . . . . . . .

66-481

B145

K121

SE15

125

R325L

MS9

RM9L
- O.H.V. models

-

-

-

-

-

-

-

  
1934-35 M34-13, M35-11 . . . . . . .

24-1588

B12

K8

SE18

-

-

-

-

 

650 Twins (Plain Bearing Models)

Year

Model

Big end shell No.

Big end standard size

Small end No.

MAIN BEARINGS

Drive Side

Timing Side
1950-55 A10

B2024LC

(67-320)

1.4595

1.460

SE109

R130L

67-790

1.3745

1.375
1956-58 A10 & Super Rocket

B2033LC

67-1176

1.6865

1.687

SE109

R130L

67-790

1.3745

1.375
1958-on A10 Super Road Rocket, A65 Star twin, Rocket, Hornet & Ligtning

B2046M

67-1430

1.6865

1.687

SE109

RM11L

68-0015

1.3745

1.375
1966-69 A65, Lightning, Hornet, Thunderbolt & Spitfire

B2046M

67-1430

1.6865

1.687

SE109

RM11L

68-0657

1.4995

1.500

 

750cc Twins

Year

Model

Con rod casting No.

Big end Part No.

Cage Part No

Small end Part No.

MAIN BEARINGS

Drive Side

Timing Side
1936-38 Y13

33-258

33-260

B16Y

K12

-

-

-

-

 

750cc Triple

Year

Model

Big end shell No.

Big end standard size

Small end No.

MAIN BEARINGS

Centre Main

Drive

Timing
1969-on A75

B3053LC

1.6235

1.624

-

M2098LC

1.917

1.9175

-

-

 

986cc Twins

Year

Model

Con rod casting No.

Big end Part No.

Cage Part No

Small end Part No.

MAIN BEARINGS

Drive Side

Timing Side
1932-40 G14 (Side Valve engines)

26-598

26-599

B16G

K9

K10

SE21

-

-

-

 

1021cc Twins

Year

Model

Con rod casting No.

Big end Part No.

Cage Part No

Small end Part No.

MAIN BEARINGS

Drive Side

Timing Side
1930-36 Three Wheeler

ST243

B18

-

SE23

-

-

-

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