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> little engine thing
bd1308
post Aug 11 2005, 07:29 PM
Post #1


Sir Post-a-lot
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everything is good and well with my car, just one thing

whenever i'm in the powerband in my engine (2500-5500) and i proceed to engage full throttle action, i get this wierd racheting sound coming from the engine bay....

my first worry was that the timing was way off....I adjusted it and the dwell and nothing has changed....

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SLITS
post Aug 11 2005, 09:34 PM
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"This Utah shit is HARSH!"
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If you were at 0 Deg, I doubt the car would accelerate and would run like shit.....igniting the fuel/air mix in advance of TDC gives the shit time to burn....it is not an instantaneous explosion (detonation).

Since the burn time (flame front advance) is constant for a given fuel/air mix, the higher the rpm, the more advance is needed to keep from putting unburned mixture down the tailpipe.

Me thinks you should study combustion technology just a little bit more.

And detonation is not a ping ping....it is a rattle and it will destroy bearings, piston decks and heads.
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