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On 7 Jun 2006 at 22:42, Brad Mularcik wrote: > My points are pitted. I am running the blue coil. What is the issue > with it? A certain amount of pitting is normal and is not a cause for alarm or replacement. That said: The Blue coil has lower resistance so it draws more current thru the coil. Point life will always be shorter with the Blue coil, but I can't say how much shorter since I've never run one. It also has lower inductance, so the current also rises faster. All this works against you in a street car where you spend significant time below 3000 RPM. The lower resistance, inductance, and higher current will actually help if you're running above 5000 or 6000 RPM, because it allows the energy in the coil to charge up faster in the shorter time between sparks at high speed, but I've personally never seen a stock coil that didn't work just fine up to a normal red line (5000 RPM.) I worked this all out on a MathCAD worksheet a few years ago, and both coils showed more than enough available spark energy (using Bosch's criteria) to above 8000 RPM. Frankly, if you're running that fast, you've going to have problems that no coil can cure.... The recent production Blue coils, which I believe are from Mexico, also have a reputation for poor reliability, so I really don't see any reason to use anything other than the OE black Bosch coil. They work perfectly and I've never seen a bad one. Russ probably has, though, but I'm pretty sure he'd agree that they're rare, just like bad Bosch condensors. I have some good used Bosch OE and German-made Blue coils here which I'd be willing to sell. -- ******************************* Jim Adney, jadney@vwtype3.org Madison, Wisconsin, USA ******************************* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ List info at http://www.vwtype3.org/list | mailto:gregm@vwtype3.org ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~