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Lycoming 4 cylinder top case coilpack mount Lycoming 6 cylinder top case coilpack mount
Coil pack upper case through bolts torqued to 75 inch/ lbs.
For VW, Subaru, Rotax, or other, either engine mount or firewall mount whichever is easier. Keep coil
pack at least 12 inches away from exhaust pipes or use heat shielding or air blast tube to keep the coil
pack temperature down.
Spark Plug adapters 18 to 14mm
We provide brass adapters to convert Lycoming 18mm plug threads over to 14mm in order to utilize less
expensive automotive type plugs. We also supply NGK or Denso plugs. Installation: Assembly: Install
plugs into adapters and slide the copper washer over the adapter. Use only a thin stripe of anti-seize
compound on the plug and adapter. Do not coat the threads.
Plug and adapter Installation:
1. Thread the spark plug into the adapter
2. Torque the assembly into the cylinder head using the PLUG hex to 19ft./lbs.
3. Torque the ADAPTER further to 25 ft./lbs.
Short reach Long reach
Plug gap should be set at .032. Mounting of electronic enclosures, engine firing order & coilpack cylinder
numbering and spark plug wires are covered in the Electrical section of this manual.
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