After a ten year sleep, and several short bursts over the last two weeks, my
'75 spitfire finally fired up and established a stable idle!
So I drove off into the sunset...yeah, right. The idle was stable at 2500
rpm, which I was able to drop to 1200 rpm by unscrewing the idle adjusting
screws on the SU's all the way out. I think the 8 psi fuel pressure may have
a lot to do with that; I'll be making a trip to the local speed shop to look
for a fuel pressure regulator.
After not being able to get the engine to even cough, and after checking
everything else, I finally switched to a spare coil from my parts bin. It
worked! Fired right up. I guess many of the previous problems I had getting
this thing going could be attributed to the bad coil.
Which brings me to my questions: I'm not going to trust the old spare coil.
Looking in the Vicki Brit catalog I see the stock coils, plus the 40,000 volt
Mallory coil, which requires I replace the resistor wire with Mallory's
resistor.
Would someone with experience with these coils care to comment on whether
they are worthwhile? If getting a "hotter" spark is that much better, why
didn't it come from the factory that way?
A little note on coil installation: In the latest Moss publication I
received, they have an article on how to install the 40kv coils. They
require a 12volt feed, rather than the 6volts fed to the later electronic
ignition cars.
Opinions cheerfully accepted.
regards,
Sean Johnson
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