[Healeys] Engine dies suddenly--solved???

i erbs eyera3000 at gmail.com
Fri Mar 22 20:11:20 MDT 2019

holding out on important info. No mention of electronic ignition in your
original post... Good on you pal. Have a great trip
Ira Erbs
      _______                                  _______
     (______ \____1959 BN4____/ _______)
          BT7 engine and disk brakes

1967 MGB  [image: MG]

A racing car is an animal with a thousand adjustments. Mario Andretti
Please excuse random auto corrects and misspelled words


On Fri, Mar 22, 2019 at 5:13 PM Michael Oritt <michael.oritt at gmail.com>

> Rather than replacing parts on a wholesale basis without learning what was
> the cause of the car's suddenly stopping my hope/goal was to find a
> component/connection in the ignition system that appeared to be defective.
> This morning I started at the key switch and it tested fine. I then moved
> to the ballast resistor whose task is to reduce voltage to the MSD Blaster
> 2 coil and the Unilite ignition module. I wanted to check the ballast's
> value with an ohm meter and because of where it was installed--just above
> the starter on the inner face of the passenger toe box--I could not get the
> probes to the contacts, so I removed it to check it on the bench. When I
> unscrewed the bolt that held it in place a piece of its innards fell onto
> the floor of the garage!
> The Mallory 700 resistor, which along with the Unilite, has been in the
> car for 10-12 trouble-free years. It is supposed to have a value of 1.5
> ohms. On examining its remains on the bench I could see that the coiled
> wire appeared loose at one end and when I checked its value I got readings
> that were all over the scale. Luckily I had a spare ballast on hand--this
> one actually made by MSD and matched to the blaster coil--so I installed it
> in place of the old unit. I'm "cautiously optimistic" that I found the
> issue but of course that will have to be borne out by experience.
> My wife likes to ride in the Healey and we like Richmond VA, which is
> about 125 miles from home. The route down US 301 will keep us off of
> interstates, so we're heading down there in the morning for an overnight
> trip. I'll be bringing along a multimeter along with a spare coil, rotor
> and Unilite ignition module, wire and connectors, etc. Hopefully all will
> go well. Fingers crossed....
> Best--Michael Oritt
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