Kiljoy from the USWebsite wrote this, thanks!
After much research I have found that a very suitable coil for
upgrading the Subaru EA-81 and EA-82 ignition systems is the Accel 8140
Super Stock, which should be available at just about any auto supply
shop, especially those that specialize in American V8's. This coil is
inexpensive, and has a primary resistance of 1.2ohms, which is very
close to the factory spec. It has a max. output of 42,000 volts and is
oil-filled to keep it cooler for more consistent output and longer life.
Plus, it's the same size as stock, so installation is easy. Just loosen
the stock mounting bracket and slide the old coil out. Then swap the
wires over from the stock coil one at a time, making sure you get
polarity correct. Once you get the wires changed over, slip your new
coil into the bracket and re-tighten. Now go out and enjoy the improved
performance!
While you're into the ignition, you might as well replace the cap
and rotor, spark plugs, and plug wires. Cap and rotor combo's for these
cars are general all very similar, and you might as well pick them up
from the dealer, or the place you get your coil from. As far as spark
plugs, NGK and Bosch seem to be the best choices for these engines, so
stick with one of these two brands. The plug wires, on the other hand,
open up some more choices for you. Again, NGK and Bosch are available,
as well as universal-type sets from Accel and others. Be forewarned that
everything you read about plug wires is not all true. Basically it goes
like this: most wires use a carbon conductor or coating. The carbon
starts to break down from the first time you turn the key, and as it
breaks down, the wires start losing their performance. Most inexpensive
so-called ' High-Performance ' wire sets won't last much longer than
stock. If you aren't prepared to spend 50 or 60 bucks on a set of wires
that'll outlive your car, save some money and buy the NGK or Bosch, or
support your dealer. Believe me, I've been in the performance industry
for awhile and those ' 8.8 mm Low-Resistance Superconductor ' type wires
won't last much longer or work much better than the lowly, parts-shelf
7mm wires. The best ones I've seen yet are made by Magnecore, and like
I said, they cost 50 bucks and up, but they're worth it. NOTE: they even
have sets for the newer engines (if you have one of these engines,
you'll know performance wires are hard to come by for them). To order
