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pair. They are completely interchangeable, which can be convenient to help fine
tune the wire lengths.
Aircraft Plugs - One advantage of electronic ignition is the ability to fire across a
wider spark plug gap (0.030” to 0.035” in the case of E-MAG). Some aircraft plug
styles are difficult/impossible to adjust this wide. Plug styles
similar to REM37BY have an extended electrode arm that is
easier to adjust. Caution: You will need to support the base
of the arm when adjusting plug gap, as it can break off where
it attaches to the rim.
Auto Plugs - There are a number of auto spark plug styles
and temperature ranges available through automotive outlets.
E-MAG has NOT undertaken studies to compare the relative durability/suitability of
different plugs. We do offer a standard “starter” plug for convenience. Customers
need to monitor plug condition and evaluate/adjust as necessary. We offer the
following list of plug alternatives that is reported (BY OTHERS) to work.
1. NGK BR8ES 2.5mm Center Electrode (our standard "set-up" plug)
2. NGK BR8ET 3-Ground Electrode
3. NGK BR8EV Gold Palladium Center Electrode
Auto Spark Plug Adapters - Plug adapters permit the
use of 14mm automotive type plugs with a ¾” reach.
[Not suitable with engines that use long-reach (13/16”)
aircraft plugs.] First, install adapters with the supplied
gasket on the spark plugs finger tight. Then, insert in
engine and tighten to 15 in/lb (standard plug torque).
Note: If you install and torque the adapters separately,
stresses will be more focused on the adapter neck and can cause it to fail during
installation.
E-MAG Aircraft Lead Kit – E-MAG’s aircraft plug leads
have traditional “cigarette and spring” threaded fittings
pre-installed on one end of our auto style wires. The hex
cap end attaches to standard 5/8” x 24 spark plugs.
There is currently no harness option for 3/4” x 20 plugs.
The other end connects to the coil and is trimmed, and
fitted in the same manner as our standard Auto Lead Kit –
see below. Note: Aircraft kits use our standard auto wire (not shielded). To date,
we've had no (zero) reports of noise problems from customers using this wire. Even
so, builders have the option, if needed, of adding a shield over the leads and
grounding them at the spark plug end.
E-MAG Auto Lead Kit – E-MAG’s auto style harness is provided as an assembly kit.
It gives the builder greater latitude in routing and permits a cleaner more custom
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