HOW TO: Change Spark Plugs on the 1.8T (BWW)
#16
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Platinum and iridium are used on the center electrode to reduce electrode wear. This provides a longer SP life, which means less maintenance. However, with the long life of these plugs, the gap increases and results in a change in the spark voltage and power. I use the copper plugs because:
1) I don't mind changing them, and the short life of the coppers forces me to change them frequently and learn how my engine is performing.
2) With the short interval required by the coppers, the gap remains fairly consistent and unchanged, resultinig in uniform spark voltage and power.
3) Coppers are cheap.
1) I don't mind changing them, and the short life of the coppers forces me to change them frequently and learn how my engine is performing.
2) With the short interval required by the coppers, the gap remains fairly consistent and unchanged, resultinig in uniform spark voltage and power.
3) Coppers are cheap.
#17
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The copper will wear out faster and is cheaper.
The solid platinum are designed for 60K+ miles and don't really wear out so fast but cost helluvalot more.
You can't run nitrous with platinums![Smile](https://www.audiworld.com/forums/images/smilies/smile.gif)
that being there is no advantage of copper other than cost, and that the electrode will wear out faster requiring more frequent replacement.
unless your EGT's are too high (melt piston/valves high) or you are detonating the proper temp solid platinum should not wear out prematurely.
The solid platinum are designed for 60K+ miles and don't really wear out so fast but cost helluvalot more.
You can't run nitrous with platinums
![Smile](https://www.audiworld.com/forums/images/smilies/smile.gif)
that being there is no advantage of copper other than cost, and that the electrode will wear out faster requiring more frequent replacement.
unless your EGT's are too high (melt piston/valves high) or you are detonating the proper temp solid platinum should not wear out prematurely.