<VV> "Points" to ponder - HEI
JVHRoberts at aol.com
JVHRoberts at aol.com
Fri Oct 28 19:17:24 EDT 2005
In a Corvair turbo, the combustion chamber pressures were probably higher
than any other production car on the world at the time they were built. That
alone puts the ignition requirements beyond the original design. Remember, a
Corvair uses a standard GM ignition system, they make pretty much the same spark
energy as any other 6 cylinder GM car.
In a message dated 10/28/2005 6:17:43 P.M. Eastern Standard Time,
tonyu at roava.net writes:
>I did everything on my turbo car to the point type ignition, hotter coil,
>lower resistance ballast, different capacitor, alkyd cap and rotor,
>and it still
> misfired sometimes at full boost, and as soon as the center electrode
>rounded over even a little bit, the misfire at full boost ALWAYS happened.
>Until I did my HEI upgrade. End of problem. Totally.
I was running Autolite plugs in the Spyder, had good luck with them
in the Plymouth w/426 engine in that they were more resistant to
fouling than other plugs, according to the Mopar gang and those guys
were right, the Autolites would hang in there. So, I methodically
ran Autolite variants in the Spyder as well after redoing and
tweaking the engine, never a blurp with the ignition even under hard
boost. Got witnesses... :) ...including the guy who bought it who
commented on how it would hunker down and fly up Christiansburg
Mountain's miles-long uphill grade on I-81.
Again, I think that a properly functioning points ignition *will*
work well in most instances if it's done up right.
Not to take anything away from PEI systems but I tend to do with
what's there until it no longer does, then I'll think about doing
with something else. So far, points have done.
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