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S4 / RS4 (B5 Platform) Discussion Discussion forum for the B5 Audi S4 & RS4 produced from 1998-2002

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Old 06-04-2001, 08:15 AM   #21
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Default Right copper's resistivity is 2 micro ohms..

So the gap can remain larger in higher boost situations. I think Iridium is a nice middle of the road at ~5 micro ohms. The best of both worlds longer service life then copper, less resistive then Plantinum, and stronger then both.
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Old 06-04-2001, 08:27 AM   #22
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Default Re: Ok, I have a few questions - what do different gap sizes and heat ranges provide? what's the

Larger gap, generally means more power. The idea behind a spark is to generate more heat in small area of the cylinder. The larger the gap, the more area you heat and the better the flame kernel, that's a general rule and there is a limit to that. However when the gap increases it requires to more power to jump that gap. Also as compression increases so does the power requirments.

Part of the function of a plug is to help dissipate heat from the cylinders. If you ran high boost you could benefit from a colder plug since more heat will be drawn from the cylinder and you decrease chances of predetonation. However the flip side to that, is colder plugs take longer to get up to a self cleaning tempature. If the plugs never get up to temp, you in theory increase the chance of carbon fowling since there are large deposits on the plug. It's kind of a tight line, and that's why I suggest staying stock, unless you run >20 psi..
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Old 06-04-2001, 08:28 AM   #23
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Default You just beat me!!

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Old 06-04-2001, 08:29 AM   #24
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Default It's the lack of blood in the thumb, makes me type faster, less wieght

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Old 06-04-2001, 09:51 AM   #25
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Default a question for zaphrod..

do the words "as_tundra" and "cs_estate" mean anything to you? your name appears as the author of these two counter-strike maps, just wondering if it was you who created them.
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Old 06-04-2001, 10:20 AM   #26
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Default nope. don't know what you are talking about. it zaphod, not zaphRod

zaphod beeblebrox is a character from the hitchhiker's guide to the galaxy series written by the late Douglas Adams.

z | b
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Old 12-07-2001, 11:28 AM   #27
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Default it does to me. : ) i am madman on CS

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Old 02-18-2010, 12:13 PM   #28
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Default

Is anyone else having trouble seeing the DIY pics for the spark plug install?
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Old 02-19-2010, 12:20 PM   #29
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Default

well, it was originally posted in 2001
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Old 02-20-2010, 12:18 AM   #30
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Default

i just changed my spark plugs the other day and found it very easy on this car i gapped to .27 im stock with just piggies
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Old 02-20-2010, 12:18 AM
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2003, 2005, a4, a6, audi, change, changing, plug, plugs, quattro, replace, roadster, s4, spark, tt


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