detonation

[perfectturmoil]

i hear people talkin about detonation a lot.. something to avoid in cars with advanced timing or high compression i think?


my question is this: is detonation really bad? like.. is it something that just causes some loss of power and you dont want it happening too much? or is it like.. kaboom and your whole motor explodes?

[PNG]

No, it doesn't make your whole motor explode. As shown in the fine documentary film "The Fast and the Furious", only NOS can do that. :p

Read this FAQ (http://www.techweasel.com/articles/octane.htm) for information on what detonation is and how higher octane gas prevents it.

[perfectturmoil]

thanks for the link :-]


Originally posted by PNG
No, it doesn't make your whole motor explode. As shown in the fine documentary film "The Fast and the Furious", only NOS can do that. :p


the floor of your car also falls off ;-]

[91LudeSi]

detonation will mess things up sooner or later if it does it all the time..what it is, is the spark plug fires on its own be4 the air/fuel mixture is compressed

[Red93R1]

Originally posted by 91LudeSi
detonation will mess things up sooner or later if it does it all the time..what it is, is the spark plug fires on its own be4 the air/fuel mixture is compressed

Detonation isn't necessarily caused by the plug firing too early or before the mixture is compressed. Detonation is the air/fuel mixture igniting too soon usually due to a compination of things such as compression, heat, and too much oxygen from the NOS that just blew up your floor.

[NotAMonte86]

Originally posted by 91LudeSi
what it is, is the spark plug fires on its own be4 the air/fuel mixture is compressed
No, that's not what detonation is.

[Fenrir]

I can give a textbook definition of detination! *raises hand*

Detonation occurs AFTER the spark plug has fired in the combustion chamber. The sudden increase in pressure in teh cylinder causes ignition in a different part of the chamber. You no longer have an even distrubition of flame prop(can't remember the word) from the spark plugs to the cylinders. So now you have multiple flame fronts colliding inside the cylinder walls. When the flame collides it creates a pinging. When it gets bad, ladies and gentleman of the audience it then

knocks.


Or just read PNGs link. I'm sure its everything I said, only it sounds a lot smarter.