Re: over heated coil
Quote:
Originally Posted by rotorwrench
One way to deal with it is to use an external ballast resistor. If they run too hot then they are drawing too much current. The ballast will bleed that off and keep the heat out of the coil. Ignition coils usually only fry themselves if the key is accidentally left on too long. A coil will always be pretty warm to the touch but it shouldn't be so hot as to burn you if you touch it.
Many manufacturers started using ballast resistors when the change to 12-volts came about in 1956. The 1.5-ohm primary type coil works well with a 1.3 to 1.5-ohm ballast. In later years, the epoxy resin insulation inside the coils allowed for a full 3-ohm primary resistance inside the coil. This eliminated the need for an external ballast for 12-volt systems.
|
So are you suggesting using a resistor on a 12v coil with an internal resistor? Does the blue bosch have an internal resistor?
__________________
Owner/Operator of 'Jailbar Ranch' on the side of Mt. Pickett. Current stable consists of 1946 1/2 ton pickup turned woodie wagon with FH V8, 1947 Tonner Pickup (red) mostly stock with exception of a cummins 6at turbo diesel, 1946 Tonner Pickup (green) with 226 cu in 6 cyl flathead, 1979 Toyota landcruiser wagon, completely encased in 1947 Ford Jailbar sheet metal. Ok, cornbinder rear fenders..... 'Rusty ol' floorboards, hot on their feet' (Alan Jackson)
|