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Spark Plug Gap
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[QUOTE="WoodsRider, post: 476435, member: 16545"] On the diesels I work with, changing the injector timing one or two degrees can produce up to a 5% change in peak-load horsepower. Of course I'm talking about engines rated at 3600 bhp. Since the injectors are mechanical this means that opening pressure has a similar effect as the sparkplug gap in a spark-ignition engine. However small changes in timing on a diesel have a greater effect on power output since the heat of compression is used to ignite the air-fuel mixture. I'm sure Rich knows more about how ignition timing will have an affect on the swirl of the incoming charge and how to properly gap a plug for cylinder that have been ported or had the combustion chamber reshaped. IMO a stock engine will require a stock gap, but a modified engine will require some modifications to the ignition system for peak performance. [/QUOTE]
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MX, SX & Off-Road Discussions
Dirt Bike Mods & Maintenance
Spark Plug Gap
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