In my case, I did not connect the high tension leads together as in a
typical double-ended, wasted-spark, OEM installation. All coils were
run normally ("grounded to the block itself"). They were simply fired
every engine revolution on each of the paired cylinders. This cut down
on the number of outputs that were needed from the ECU.
RE:>would you not be firing the coil far more often that if in the
originally designed environment with a four cylinder and with wasted spark?
Yes. (Assuming the coils came off of a fully synchronous application
and were not fired multiple times per combustion event and . . .)
RE:>Given the dwell is set to OE-
If you can not control your dwell, choose your coils carefully.
FWIW, I noticed a Motec ECU on Ebay is currently at $1000.
I was typically running 1.5 to 2 ms of dwell with the LS2 truck coils.
Eric Schieb
Rob Ebersol wrote:
> Given the dwell is set to OE- would you not be firing the coil far
> more often that if in the originally designed environment with a four
> cylinder and with wasted spark? And is there any issue with firing a
> COP in a wasted spark circuit where the other side of the coil
> completes the circuit vs. it being grounded to the block itself?
>
>
>
>
> On May 2, 2009, at 10:22 AM, Eric Schieb wrote:
>
>> You simply need to make sure that your dwell is short enough that you
>> do not excessively duty cycle them and burn them up. They will
>> charge quick enough.
>>
>> You would not be the first person to do something like this. ;-)
>>
>> When considering any LS coil, you will need to make sure that you're
>> dwell can be appropriate for the coil. If you're dwell is longer
>> than what the coil wants, it will fire whether you want it to or not.
>>
>> When I am approached with a blank sheet kind of project, I now
>> recommend the Mercury Marine style coils instead of the GM kind. The
>> Mercury Marine style coils do not have the protection circuitry built
>> in.
>
>
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