TFI Octane Rod

Distributor (Typical) - Exploded View:

The octane rod adds a provision for a fixed octane adjustment. The adjustment is done by replacing the standard zero-degree rod located in the distributor bowl with a three degree or six degree retard rod. This is done only if the engine is experiencing a pinging or engine knocking condition and can not be repaired with the conventional methods (timing adjusted, proper operating temperature, higher gasoline octane rating....etc).