Ben,
I also have a 1978 B, Unfortunately I can't look at it right now, but
hopefully I can still help a little.
Mine electrically was all working when I got it. It has the aftermarket
'Allison" ignition with an otical sensor thing in the dizzy.
There is pretty much the same set up which you described:
One grey wire from the distrib to the ignition module, but I suspect
that may have more than one wire inside the grey sleeving? also,
there is the obsolete wire with three OOO looking female connectors
just dangling by the oil filter, presumably from the original setup, so
I
don't think that is anything to be concerned with. There is also a
green
wire that connects to bulb thing, I'm also not sure what that is for.
The only other point I can offer is I don't believe you should be able
to
spin it clockwise and counterclockwise about 45 degrees in either
direction with relative ease. - that may be your main problem, is the
bracket which holds the dizzy near the engine block tight?
Hope this helps a little,
Good luck,
Alan B.'
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From: Benjamin Ruset
To: mgs
Subject: (*ON* TOPIC) Here I sit -- tales of woe
Date: Tuesday, November 18, 1997 8:57PM
Well, my nemesis (78B) and I are at odds still.
I spent the better part of this afternoon trying to decypher my ignition
(or lack of) troubles. I pulled the Lucas ignition and distributor and
replaced them with the Lumenition module and dizzy that were in the box
of
parts I got when I bought the car. Seems that the PO replaced the
Lumenition with the Lucas model, and something didn't work, and the car
sat
for a year. He then sold it to me.
But I digress. So, logically, I figure that replacing the Lucas setup
with
the Lumenition (that I have a feeling does work) would be the surest way
to
rectify the situation. However, comparing my 78 to another 78 at my
mechanics I notice about 3/4 less wiring in the other car. My car has
wires
running all over the place. So, figuring out where to connect everything
is
a pain.
Maybe I should get to the point:
1) How loose should the distributor be? I can spin it clockwise and
counterclockwise about 45 degrees in either direction with relative
ease.
2) How does the lumenition hook up? I have a wire from the brain to the
distributor, one to ground, one to the - side of the coil, and I have
tried:
* + to + side of coil
* + to fusebox
* + to thing where the wire for the electric fans get their positive
power
from. I can also hook both the Lumenition and the fans up to this
connector
at the same time.
I have not tried the last, because my battery died from trying to crank
it
too much.
There are so many weird electrical things going on in the MG. I cant
find
the wires that connect to what I assume is the thermostat on the pass.
side
of the radiator. There is also a green wire that connects to something
vaugely "bulb like" with the brand "Otter" on it. No one I have talked
to
knows what that is.
There's also another wire with three OOO looking female connectors on it
soaked in oil just dangling by the oil filter. I have tried tracing the
wires back, but they get lost under the electrical tape and bundles of
wires.
HELP! I am about to fling myself off a bridge (of course, the car goes
first...). Seriously, this is getting old, fast. It's been two weeks
already, and I still haven't gotten the bloody thing to run yet...
BEN RUSET
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78 MGB Roadster (has seen better days)
89 Mercury Cougar (running again!)
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Homepage - http://www.monomouth.com/~bruset
Saftey Fast! - http://www.infi-pos.com/~oasis
^^^ Note: Under construction, and taking submissions!
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