|Awesome Twin Plug Ignitions!
|engines. There are many benefits, including:
2 - more torque
3 - lower emissions
4 - improved reliability
5 - The whole set up just looks really cool!
We choose the Pertronix billet distributor for several reasons, it is a very nicely built piece at a
fair price, it uses an modern solid state ignition that can be modified for a second unit, and it
should be around for a long time.
|My original dual distributor, a 1970's era HASSAD dual distributor with a toothed belt
drive connecting them.
|My first attempt at making a dual a 2nd
set of terminals onto a 009 cap. There
just is so little room inside the 009 cap
that it was very difficult to put together &
I only had room for conventional points.
|has a toothed belt drive connecting the two distributors. It looked really cool, but due to drag on the belt, was not that
successful. I decided to try making my own. I used a Bosch 009 with a Datsun Z22 dual distributor cap & rotor with adapters to
fit to my 009 distributor. It worked really well. I was going to make several of these, but then Bosch stopped making the 009 &
after further research I unimpressed with the Chinese version of the 009. So I decided to switch gears & looked at the Pertronix
billet VW distributor.
|Side view of Pertronix distributor,
showing the 2 separate sets of leads for
the 2 ignition moduals.
|Top view showing the mounting of a
2nd Ignitor II modual. The second unit
is adjustable to fire 0 -10 crankshaft
degrees later than the primary unit,
with the goal of extending the total
|Top view of the stock Pertronix
advance mechanism. This unit
comes with different springs if you
want to adjust the advance curve.
We have not done any experiments
with this yet.
|Here you can see the custom aluminum spacer to mount the
Datsun distributor cap to the Pertronix body. The Datsun
rotor with custom high temp phenolic mounting spacers is
|This shot shows the assembly. The firing order
stamped in the cap does NOT match the firing
order of an air cooled VW engine, so right now we
have tape color coded the terminals to help avoid
|Are you interested in having a set up like
this? If so, email us & we can work out a
costs and we would be very interesting in
seeing how many other folks would like a
set up like this.
|Twin plug heads from The Bug Patch in Santee, Ca. These are brand
new EMPI heads with 40 X 35.5 valves, with a second spark plug added
from below. These have been opened up for 1776 engine. These are
very reasonably priced heads for all the work involved. The spark plugs
in the stock location are 3/4" reach 14mm, and the new spark plugs in the
bottom are 1/2" 10mm.
|The complete set up. Shown is twin plug heads, custom dual ignition, 2 sets of stock Bosch
type 3 person needs for a twin plug ignition set up.
|So what's next?
We built a 1776 engine for my son's bug
that will run this setup. We hope to have
dyno runs with and without the 2nd
ignition to see the effects. Please check
back periodically for updates!
|A link to The Bug Patch Website
|Close up of the twin Ignition moduals, with
Awesome Powdercoat LLC logo stamped
|Flame Thrower II coils.