Successful spark plug gap experiment.
#11
Ha, ha. No. When a gap is too big, the ignition system can't provide enough voltage, which causes misfires. Even more with high compression or f/i applications. When there's a dense a/f mixture in the combustion chamber, you need a small gap to ensure that the spark can cut through this mixture. This is why I was misfiring before and the fact that our coil packs are a little on the weak side.
#12
Right. The spark is weaker with longer gaps. You want the spark to be just strong enough so that it burns reliably, with as wide a gap as possible so as to have the most surface area to ignite the fuel mixture with. You need to find that happy medium.
#13
Spark plugs are not going to hit the pistons if you gap them wide. I don't know where you heard that.
This. ^^
Generally, when you up the pressures inside the combustion chamber (more boost or higher compression ratio) you need to reduce the gap.
Ha, ha. No. When a gap is too big, the ignition system can't provide enough voltage, which causes misfires. Even more with high compression or f/i applications. When there's a dense a/f mixture in the combustion chamber, you need a small gap to ensure that the spark can cut through this mixture. This is why I was misfiring before and the fact that our coil packs are a little on the weak side.
Generally, when you up the pressures inside the combustion chamber (more boost or higher compression ratio) you need to reduce the gap.
#14
Ha, ha. No. When a gap is too big, the ignition system can't provide enough voltage, which causes misfires. Even more with high compression or f/i applications. When there's a dense a/f mixture in the combustion chamber, you need a small gap to ensure that the spark can cut through this mixture. This is why I was misfiring before and the fact that our coil packs are a little on the weak side.
Other than the gap having to be with in range of the actual power available (ie: coils) to actually 'spark' over, the smaller gap with run better at higher rpms while the larger gap will run smoother at idle. The factory setting is a compromise between the two.
#15
I mostly said it as a joke lol.
#16
So, if I were to get stiffer valve springs and set the ecu at a higher red-line, do you think a .025" gap would be a good setting for that? Just curious.
#18
What sucks is that you can't find aftermarket stuff like that. Unless I'm totally unaware that there really is.
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