WebMay 26, 2024 · A 72-79 Federal bus came with a black coil 022 905 115C and a common "upgrade" includes switching to the hotter blue coil, sometimes called the Bosch Super coil. According to Brian Verbeek, the Blue coil is less powerful than the OEM black version but I haven't been able to prove that through measurement. They appear to operate … WebIf you’ve tried to install one of the newly-redesigned Bosch coils for BMWs, part numbers 0 221 504 464/00124 and 0 221 504 470/00044, you may have wondered why the part did not “snap” into place. With the newly-designed coil, the customary “snap” previously heard with the old design – giving an indication that the coil had been ...
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WebJun 5, 2007 · Don stated that the red coil primary resistance is about 1.2 ohms, and the secondary resistance is about 5.5 ohm. The windings in the red coil is about 200:1. The red and blue coils are 'resin' filled, not oil or epoxy filled. Don stated that the resin they use … WebRed goes to 12V (Terminal 15) and black goes to the other post (Terminal 1). Other than that, the unit is absolutely dependable. ... This part is no longer available and the replacement is the Bosch blue coil. Often just called the blue coil, it's thought of as being a "hotter coil" probably because it's been marketed under the words "super ... other term for premium
Can I use a Bosch "red" or "blue" coil? - Page 2 - Pelican Parts
WebJul 22, 2007 · Bosch replacement coils sold in the 70's were also blue in color, some had internal resistance others did not depending on the application they were made for. The reference to a blue coil in the shop manual would have been a reference to the cars with … WebFeb 23, 2005 · Coils Just a note, I have the Red Coil, it is defined as Racing Use only. I had to get an external resister and wire from the solinoid (sp) to the resister for starting. I believe the blue is internal resistance. The red gives me good spark with standard Bosch Distributer. to me a better spark than the blue. Al WebAug 20, 2013 · The ballast resistor. This is a resistor inside the coil on the primary side that reduces the current flow partly so the points don't burn up. You can detect the presence of the resistor by measuring the ohms of primary side of the coil (terminal 15 vs. terminal 1). Because the primary is mostly copper wiring (virtually zero ohms), the presence ... rockingham ambulance service