Jun 12, 2005here's the problem, the stihl setting gage seems to set the air gap too tight, like 0.004" measured between the ignition module arms and the flywheel magnets using a feeler gage set. Apr 12, 2018it's sop to inspect & gap new spark plugs to your desired gap before installing them. They could have been dropped, thereby changing the gap, etc.
Apr 22, 2017things that determine resistance is the plug wire conductor (metal conducts better than carbon impregnated fiberglass strands), the spark gap, and the resistance in the plug (the r in the. Dec 3, 2020closer gap and/or faster speed = higher induced voltage. Sep 27, 2015if the gap is greater than .187” install a .060” flat washer between the torque converter and flexplate.
Nov 6, 2024building a 454 030 overbore and pre gapped rings are 25/26 thou gap. Apr 11, 2017this wide gap situation causes excessive arcing at the points and, because of this, your points will prematurely burn and pit. Apr 16, 2023rule of thumb for a naturally aspirated engine 0.004" gap per inch of bore so in your case you should shoot for 0.016-0.017" (4.155 x 0.004) ideally.
If your gap is 0.032" you probably don't. Sep 2, 2008the key is, if the compression ratio goes up, drop the gap down. Gm made a real mistake with hei performance during their oldsmobile years, they specified a spark plug gap of .060, and.
Jan 14, 2006the plug gap is a little small for that mild of a motor.
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