Ignition coil
Thread Starter
Instructor
Joined: Nov 2019
Posts: 245
Likes: 15
Ignition coil
Looking to replace the coil on my 68 convert 327/350hp as part of a tune up because I have no idea how old it is. Old one is a Blue Streak and states use with external resistor and was installed with a condenser attached to the coil mount and connected to the coil positive terminal. The new one is a transistor coil I bought from Corvette Central with no statement about an external resistor.
Do I need to connect the old coil condenser to the new coil positive terminal or is it not necessary?
Do I need to connect the old coil condenser to the new coil positive terminal or is it not necessary?
Team Owner
Joined: Mar 2002
Posts: 44,679
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From: Huntsville AL
The coil capacitor was for radio shielding. The statement "use with external resistor" should be a resistor wire installed in the ignition circuit from the factory.
Coil Capacitor
Coil Capacitor
Last edited by Mr D.; Jun 28, 2022 at 03:45 PM.
Tech Contributor
Joined: Jun 2004
Posts: 20,910
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From: I tend to be leery of any guy who doesn't own a chainsaw or a handgun.
Looking to replace the coil on my 68 convert 327/350hp as part of a tune up because I have no idea how old it is. Old one is a Blue Streak and states use with external resistor and was installed with a condenser attached to the coil mount and connected to the coil positive terminal. The new one is a transistor coil I bought from Corvette Central with no statement about an external resistor.
Do I need to connect the old coil condenser to the new coil positive terminal or is it not necessary?
Do I need to connect the old coil condenser to the new coil positive terminal or is it not necessary?
Drifting
Joined: Mar 2006
Posts: 1,263
Likes: 188
From: Wabasha Mn
Thread Starter
Instructor
Joined: Nov 2019
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The coil is a Delco Remy 1115272 from Corvette Central. It’s listed as. Transistor Ignition coil for 68-71. Looking further at the box it warns it will be damaged if grounded by a radio capacitor. Further states it must not be installed in conjunction with a radio capacitor attached to either terminal.
So…..I will not hook up the capacitor and read better in the future. Good info for future reference.
So…..I will not hook up the capacitor and read better in the future. Good info for future reference.
Tech Contributor
Joined: Jun 2004
Posts: 20,910
Likes: 962
From: I tend to be leery of any guy who doesn't own a chainsaw or a handgun.
The coil is a Delco Remy 1115272 from Corvette Central. It’s listed as. Transistor Ignition coil for 68-71. Looking further at the box it warns it will be damaged if grounded by a radio capacitor. Further states it must not be installed in conjunction with a radio capacitor attached to either terminal.
So…..I will not hook up the capacitor and read better in the future. Good info for future reference.
So…..I will not hook up the capacitor and read better in the future. Good info for future reference.
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Thread Starter
Instructor
Joined: Nov 2019
Posts: 245
Likes: 15
Stock ignition point and condenser. I shouldn’t have ordered that coil but you can’t return electrical parts. I’ll put the Blue Streak back in till I order the non transistor coil from Corvette Central
Tech Contributor
Joined: Jun 2004
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From: I tend to be leery of any guy who doesn't own a chainsaw or a handgun.
Just FYI; The TI coil needs higher current than a points coil to get the desired energy level in it, and a stock points setup will probably not allow the same higher current, but end up eating points in the process.
Thread Starter
Instructor
Joined: Nov 2019
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Corvette Central currently lists the coil as discontinued. Let me know if anyone wants it and I’ll sent it your way. It was a $140 coil but my mistake will be your gain.
Thanks everyone for the help.
Thanks everyone for the help.
Race Director
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From: Corsicana, Tx
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The Blue Streak isn't original...but generally they were good stuff.
JIM
JIM