Quote:
Originally Posted by enkeivette
PS. I think pulling timing can help with detonation, but detonation is basically dieseling isn't it? So at a certain point, it shouldn't matter how much timing you pull, or even if there is a spark at all. Or am I missing something?
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Diesel's use the injection of the fuel to initiate fuel combustion. The direct injection diesels can see like 30,000 psi, or some crazy shit like that, in the injectors. The extreme heat and violent injection makes the instant explosion and it sounds like knock but its not. The air is literally so darn hot and compressed that the diesel ignites. Diesel also burns EXTREMELY SLOW. The "detonation" sound in the diesel has more to do with the length of stroke and high cylinder pressure than actual pre-detonation. Pre-det will still destroy a diesel like anything else really. But since the fuel isn't injected until combustion is desired, there isn't much of an issue with pre-detonation really. I hope that makes sense.