Q: dual ended ignition coil

[Donald Whisnant]

>>Does anyone know of a source of DUAL ended ignition coils?
>>Production application?  Looks like a coil with TWO HT
>>leads from it, my 1958 Honda 305 Dream was so fitted so
>>it is not a new idea, either.
>>
>>Also, in case there are any 4 cylinder DATSUN fans on the
>>list, my target is a L16/L20B engines. Just curious if
>>anyone else maybe building for this engine. 
>>
>>Long weekend ahead... time to get busy in the garage. ;-)
>
>
>Any good junk yard should have at least one 3800 engine with a bank of Dual
>ended coils.  ... I've noticed that some have stated that it is just two
>paralleled coils, but I think there is a little more to it than that --- my
>understanding is that the inductive spark is fired in one direction through
>one coil and the other direction through the other coil -- ie with the
>opposing cylinder firing in the wrong direction simultaneous to the cylinder
>firing in the correct direction .... however, two parallel coils would
>work -- but if it were just "parallel coils", why wouldn't they just use
>two coils to start with?  ...
>
>Those from a 3800 should have enough spark, but I'm not so sure either about
>those from motorcycles (that some have mentioned) having enough "zap" for this
>application...
>
>Donald
>

Well... let me clarify what I said -- Two would work in "parallel" if they
are fired off of different sources... (ie like have two separate coils)...

Donald