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Several of you have asked for more information about the electrical system
I outlined below. Please email me your (US Mail) address so I can send you
a wiring diagram along with the specs for the Chrysler control box. If you
want me to fax it, send me your fax number.
If you're interested in doing this conversion, I suggest you take your
current Lucas distributor with you to a junkyard, along with a set of
calipers to measure both distributors. Find an electronic distributor from
a late 70's or early 80's small Nissan (F-10, B-210, 610, etc) and measure
the diameter of the shaft. If they are the same, measure the overall
length of the shaft to make sure the shaft on the Nissan distributor is at
least as long as the Lucas. If it's a little longer, you may have to use a
small shim (I think I used about a 1/4 inch shim on top of the distributor
pedestal (TR-3/4)). I also used the Nissan hold down clamp (better design
than the Lucas). The drawing I will send you will have all the rest of the
information you will need for the installation.
Jack,
Although I am currently running a Mallory dual point in my TR3, adding
electronic switching (magnetic or optical) will add $100 to the cost.
Also,
if I choose to add an electronic spark control module, like an MSD, it will
require disconnecting my 2nd set of points. With that in mind, your
Datsun/Nissan conversion would make a lot of sense, freeing up dollars and
the Mallory for another vehicle.
What else do I need to know to build/install one of these?
Thanks,
Jack Brooks
1960 TR3A
1974 Norton 850 Commando
Hillsdale, NJ
> Bob, I used a Mallory distributor at one time (in fact, I think I still
> have it in a box somewhere), but came up with a better (and cheaper)
> alternative. In the late 70's/early 80's Datsun/Nissan used an
> electronic
> distributor in all of their little econoboxes (B-210, F-10, etc). The
> shaft that goes into the engine is the same diameter as the TR-4
> distributor, and roughly the same length (I think I had to use a small
> shim). All you have to do is change the drive gear on the bottom end of
> the distributor, which, of course, fits right on (the Japanese were good
> copiers). I used a Chrysler brain box ($24.95), although it will
> work with
> an MSD or other ignition system.
>
> The end result is a $10 (junkyard) distributor and $25 (Napa Store)
> brainbox which eliminates points and condenser, and gives a much more
> accurate spark. When you put the timing light on the crankshaft pulley,
> the timing mark doesn't 'jump around' like it does with a Lucas
> distributor. While my conversion was for a 4 cylinder
> distributor, what do
> you want to bet Nissan used a 6 cylinder distributor, at some time, that
> would fit a TR-6? If anyone is interested in more of the
> specifics of this
> conversion, let me know.
>
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