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66 coil
Posted by: crvr63 ()
Date: January 30, 2018 11:58AM

Does a stock 66 engine use a coil with an internal or external resistor?
Also, on my coil bracket I see an old condenser. There is no wire coming from it and it ran well with out it. Is this supposed to be there? If not, ok. If so what is the replacement? Thanks.

Orange Park, Fl
63 Corvair Conv
67 Cutlass Conv
65 Buick Special Conv
"I'm a ragtop man !"



Edited 1 time(s). Last edit at 01/30/2018 12:06PM by crvr63.

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Re: 66 coil
Posted by: Spectre ()
Date: January 30, 2018 12:04PM

The resistor is built into the engine bay harness by means of a special resistor wire.

David Clamp


1965 Corsa convertible - 140 4spd/3.55/AM-FM

2013 Mustang GT convertible - 5.0, 6spd auto, Procharger i-1

2003 Miata SE - 6spd manual (wife's toy)

"Victory is mine!" - SG

Oklahoma City, OK

Click for Oklahoma City, Oklahoma Forecast

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Re: 66 coil
Posted by: steve c goodman ()
Date: January 30, 2018 12:10PM

And condenser is for radio noise suppression. Many
are gone or not connected these days.

best wishes, Steve
Rear Engine Spec. Inc. Golden, Colo.

1962 spyder 3.0L turbo---1965 Crown V8
1967 monza 110/4---1968 monza 110/4
1971 amante gt 110/4
CORSA/RMC/PPCC

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Re: 66 coil
Posted by: 66vairman ()
Date: January 30, 2018 12:36PM

crvr63 Wrote:
-------------------------------------------------------
> Does a stock 66 engine use a coil with an internal
> or external resistor?
> Also, on my coil bracket I see an old condenser.
> There is no wire coming from it and it ran well
> with out it. Is this supposed to be there? If not,
> ok. If so what is the replacement? Thanks.

Most GM cars used the resistance wire in the harness in the 60's. Corvair spec. is 1.8 ohms (forgot tolerance). Coils varied a little depending on application, but typical coils resistance is 1.2ohms for a total of about 3.0 ohms.

Today I see all kinds of coils used. Of course the old Delco coils are not available. A good fit is the one size fits all coil listed for 60's Chevrolet V8 engines. Buy quality. Forget the Petronix Flamethrower coil they list for GM "6 cylinders" (listing was wrong last time I checked).

With turbo engines I'd step up to a modern style ignition system. Many versions shown here over the years.

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Re: 66 coil
Posted by: red monza ()
Date: January 30, 2018 06:51PM

The corvair has a resistor wire built in...usually black with a yellow stripe but my 64 has a black with red stripe...but it has been converted over to an Alternator verses a Generator...

To answer your question....EXTERNAL RESISTOR COIL...as the wire mentioned above is the resistor wire...hope that helps.

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Re: 66 coil
Posted by: dryenko ()
Date: January 30, 2018 07:59PM

The condenser on the + terminal of the coil to to protect the ignition switch contacts from the back flow EMF when the coil discharges through the primary coil.

Bob C aka Dryenko
Dobson, NC 27017

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Re: 66 coil
Posted by: Wagon Master ()
Date: January 31, 2018 06:15AM

dryenko Wrote:
-------------------------------------------------------
> The condenser on the + terminal of the coil to to
> protect the ignition switch contacts from the back
> flow EMF when the coil discharges through the
> primary coil.


And it also works as a cloaking device so aliens can't pick up your ignition signal on their AM radios. So it is semi important.

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Re: 66 coil
Posted by: Bob Helt ()
Date: January 31, 2018 08:45AM

Please note that the stock Corvair Coil has a primary resistance of 1.35 ohms. This is often referred to as 1.5 ohms. It is mandatory that your replacement coil have the same primary resistance since the ballast resistor is in the wiring harness.

Also,common, and often incorrectly used with the stock Corvair wiring, is a coil with a 3.0 ohm primary resistance. this coil is not correct for stock Corvairs and may not work correctly causing misfires under loaded conditions.

Bob Helt

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