Review on Spark Plug Index Shim by Allstar Performance ALL96506 by Bobby Posner
Lock washers for use with standard spark plug washers.
Thin steel lock washers. Two thickness sizes (0.2mm and 0.3mm); they correspond to the rotation of the plug for 10 minutes or 15 minutes. counterclockwise for each size you will use. (on a regular 12 hour dial). Torque the spark plug to 20-30 lb-ft to align the lock washer to a nice flat shape; Then add indexing discs to rotate counter-clockwise until you are where you want to index. (I've been indexing surebets since I was 24 and this was the easiest method in 49 years.)
- Absolutely amazing!
- Not bad, but...
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