Brammo 2006 Ariel Atom 2, Owner'S Manual, Page: 36 / 79

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ELECTRICAL SPECIFICATIONS
Spark Plugs in GM Engines
Gap: 0.045 in. (1.14mm)
Recommended torque: 15 ft-lbs (20 Nm)
Service: Inspect before every track event and change if necessary.
Type: LTR5GP NGK PK16PR-P11 ND
LTR51X-11 NGK
PT16VR13 ND
(or equivalent)
Spark Plugs in Honda Engines
Gap: 0.039 – 0.043 in. (1.0 – 1.1mm)
Recommended torque: 15 ft-lbs (20 Nm)
Service: Inspect before every track event and change if necessary.
Type: NGK: 1FR7G11K, 1FR7G11KS
DENSO: SK22PR-M11, SK22PR-M11S
Ignition Timing and Battery (both engines)
Set by the processor and/or the ECU. Not adjustable.