Heinkel

There are three types of Heinkel big end bearing and referring to the timing side main shaft most easily identifies these. Details of each type are shown below.

The timing side main shaft fitted to bearing reference HKL1 frequently breaks away at the end and when replacing these shafts it is our practice to fit a shaft, part number HKL4. The replacement shaft has a larger bearing diameter and is much stronger than the original design. The bearing distance spacer can also be discarded when employing the later shaft.

Original Heinkel con rods are rather thin and frequently fracture. New big ends for Heinkel engines (except Perle) are supplied with new connecting rods until current stocks are exhausted.

 

50cc

Year

Model

Con rod casting No.

Big end Part No.

Cage Part No

Small end Part No.

MAIN BEARINGS

Drive Side

Timing Side

1954-58 Perle

R477

HKL3

––

SE177

115

115

150cc

Year

Model

Con rod casting No.

Big end Part No.

Cage Part No

Small end Part No.

MAIN BEARINGS

Drive Side

Timing Side

1962-66 Scooter

––

HKL5

––

––

125

125

 

175 & 200cc (Scooters & Cars)

Year

Model

Con rod casting No.

Big end Part No.

Cage Part No

Small end Part No.

MAIN BEARINGS

Drive Side

Timing Side

1956-66 SIBA, stepped T/S main shaft with 8mm internal thread and cut-away crankpin

R404

HKL1

K70

SE178

325

325

1956-66 BOSCH, stepped T/S main shaft with 12mm internal thread

R404

HKL4

K70

SE178

325

325

1956-66 SIBA/BOSCH. Straight T/S main shaft with a 10mm internal thread.

R404

HKL2

K70

SE178

325

325

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