So I got my 1969 fired up this week after a 20 year nap and my mechanic working with me says the ignition coil that is in it...not the original...is spent. As it turns out when I bought the car 24 years ago the previous owner included the original coil that he happen to have...telling me it was spent...though I never tested it...which I suppose I should do. But assuming it is indeed spent...I just wanted to confirm that there is no possible way to refurbish or recondition it so as to make it usable again??? I am mechanically savvy...somewhat...but electrical is my weak suit. Thanks for any input or guidance. And oh yeah...if it is possible to refurbish...any sources that could do it?
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late Oct 1969 L46 350/350, M21 4spd, 3.70 posi convertible --As with life, restoration is a journey, not a destination. Though restored cars provide both journeys AND destinations! -
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Re: Ignition Coil
It may take more than a 10 minute run to determine the "goodness" of the coil....many times an intermittent coil only fails under extreme conditions of pressure and heat.Comment
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Re: Ignition Coil
Good suggestions. I will check it out. shielding? That's a good one! This baby has been brutalized over the years so all signs of shielding are long gone...along with the entire smog system...along with...you get the idea.....got my work cut out for me.
Coil is 1115270...see attached pics of what is believed to be the original one. Point me in a good direction to find a good NOS one??
Edit to add: where would I go to find OEM specs on the coil...ohms, etc.
Thanks!***************
late Oct 1969 L46 350/350, M21 4spd, 3.70 posi convertible --As with life, restoration is a journey, not a destination. Though restored cars provide both journeys AND destinations!Comment
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Re: Ignition Coil
David Sokolowski who advertises in the Driveline (extensively) will have what you need in OEM product. (310)-329-5334Leif
'67 Coupe L79, M21, C60, N14, N40, J50, A31, U69, A01, QB1
Top Flight 2017 Lone Star RegionalComment
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Re: Ignition Coil
Bench testing is very simpleChris
'72 Lt-1 a/c Pewter Silver coupe Mason Dixon Chapter Top Flight 2016
'73 L82 4 spd Dark Metallic Blue coupe Chapter Top Flight 2023Comment
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Re: Ignition Coil
1969 chassis service manual shows for V8 (non-transistor) coil: your 270 BR; 1.77-2.05 ohms on the primary, 3000-20000 ohms on the secondary. As Frank said a coil under stress may fail. When installing, keep it from touching the manifold. Small gap so shielding cover has no issue. If your coil is bad, many of the original delco coils out there with the BR on it should run well for you. The BR is for vehicles that have resistor in the harness and don't need the separate ballast resistor. Finding an original 270 coil may not be easy. As Leif mentioned Dave Sokolowski.Comment
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Re: Ignition Coil
Well you all have been very helpful. I tested the coil that previous owner gave me with the vehicle when I bought it in 1998...and it seems to test within spec. He must have swapped it out for a higher performance one i guess..which apparently has now failed..and kept the original... cuz it was original. I was never quite sure why he gave it to me...or why I kept it.... on the shelf since 1998...but now glad I did. Thx for pointing me to the Chassis Manual which I have but seem to always forget to check. lots of good specs in back including bolt torques etc.
Already got a Delco Remy after market one...maybe I will hang on to the original and swap it back in when I get close to finishing my restoration....in a few years. Would it be better for judging if I strip the exterior and repaint it...with some gloss black spray paint?
BTW...is there an expected life for a coil in miles or time...Can they last forever or do they wear and eventually fail. Just curious. I am just starting this restoration and already learning so much. Just hope the tuition along the way doesn't get too $$$ in mistakes I might make!! Can already see that restoration is probably not a money making venture...which is not what I am after anyway.***************
late Oct 1969 L46 350/350, M21 4spd, 3.70 posi convertible --As with life, restoration is a journey, not a destination. Though restored cars provide both journeys AND destinations!Comment
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Re: Ignition Coil
Coils can last for virtually ever but it varies depending on use, abuse and environment. They often fail intemittently which is hard to troulbeshoot, only causing trouble when they get very hot. Many swapped in "performance coils" over the years as in your case unnecessarily believing the hype about "hotter spark", etc.Comment
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Re: Ignition Coil
I bought 7 new GM/AC Delco coils in the box before i got a good one and not sure the 7th one is any good ,there all made in China and there all garbage, when testing they all test good soon as the coil heat up they break down, try finding one that's already been on a car and been used.Comment
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Re: Ignition Coil
Danny,
Am I correct that by new you are speaking of the REPRODUCITON coils currently being sold?
Not NOS GM coils?
Just checking because I am thinking about buying a NOS GM coil and want to ensure I am not buying a pig in a poke.James A Groome
1971 LT1 11130 - https://photos.app.goo.gl/zSoFz24JMPXw5Ffi9 - the black LT1
1971 LT1 21783 - 3 STAR Preservation.- https://photos.app.goo.gl/wMRDJgmyDyAwc9Nh8 - Brandshatch Green LT1
My first gen Camaro research http://www.camaros.org/forum/index.p...owposts;u=4337
Posts on Yenko boards... https://www.yenko.net/forum/search.php?searchid=826453Comment
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