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'A' Series BMC
IMPORTANT
Supplied are 2 screws. Replace the original bolts with screws after modifying cover plate.
Manufacturer's Statement:
Rollmaster are C.N.C. machined, high tensile steel sprockets using double row O6B-2 chain. Care must be taken to inspect key & keyways & shafts for damage before fitting. Do not use pin punches as damage will occur. Use a drift such as a pipe or sleeve. Machine to suit the boss area.
No responsibility will be taken for improper fitment or usage or damage incurred.
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| 0 |
STD cam timing |
| A |
keys to left of STD mark will adv cam timing |
| R |
keys to right of STD mark will rtd cam timing |
| 2 |
2 degrees |
Keys at crank will give a value of 1,2,3,4 degrees ADV or RTD at the camshaft. The ratio is 2:1. |
| 4 |
4 degrees |
| 6 |
6 degrees |
| 8 |
8 degrees |
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