Mjgarcia88
Silver Supporting Member
Posts: 25
Loc: Victorville, California
Reg: 02-02-23
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09-26-24 09:04 PM - Post#2874237
I have a GM 250 inline 6 (year 1973). I just started the engine and the ignition coil got extremely hot after starting the engine a few times. I didn't use the condenser with the coil because im unsure if its required for a 12 volt system. I don't think it's normal for the coil to get really hot? This is my first time working a inline 6.
Anyone have any ideas as to why the coil would get hot?
Thank you
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GreatNorthWoods
"9th Year" Silver Supporting Member
Posts: 1643
Age: 82
Loc: Littleton, New Hampshire,...
Reg: 03-31-02
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09-27-24 02:10 AM - Post#2874243
In response to Mjgarcia88
It is probably okay. Most coils are hot to the touch. Coils run hotter than most people realize and in standard ignitions its not uncommon for the coil to see close to 200 degrees.
Vern
1953 Chevy Belair Sport Coupe - 355 Chevy V8, 700-R4, 4-wheel disc brakes, Ididit column, cruise/tilt,'59 Vette Steering Wheel, A/C
1930 DeSoto CK Business Coupe- 350 Chevy Crate V8, 4-wheel disc brakes, TH400, S-10 Rear, Heidt's IFS, A/C |
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bobt
Contributor
Posts: 428
Loc: colonial heights va
Reg: 06-28-14
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09-27-24 03:09 AM - Post#2874244
In response to GreatNorthWoods
The condenser on the coil was used to reduce radio noise. I'm guessing you're not talking about the condenser for the points.
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Shepherd
Valued Contributor
Posts: 3558
Loc: Lake George, NY
Reg: 11-11-15
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09-27-24 05:36 AM - Post#2874245
In response to Mjgarcia88
Is the coil an internally resisted coil, or is it wired through an external resistor? Constant 12v at the coil if not internally resisted could cause to run hotter.
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Mjgarcia88
Silver Supporting Member
Posts: 25
Loc: Victorville, California
Reg: 02-02-23
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09-27-24 08:47 AM - Post#2874253
In response to GreatNorthWoods
Oh ok thank you. I was worried
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Mjgarcia88
Silver Supporting Member
Posts: 25
Loc: Victorville, California
Reg: 02-02-23
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09-27-24 08:48 AM - Post#2874254
In response to Shepherd
I don't recall if its an internally resisted coil. I will have to look into it. Thank you for the help. I might just go buy a new 12v coil today and see what happens
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Mjgarcia88
Silver Supporting Member
Posts: 25
Loc: Victorville, California
Reg: 02-02-23
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09-27-24 08:49 AM - Post#2874255
In response to bobt
It shouldn't hurt to just add the condenser with the points coil?
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52_Belair
Senior Member
Posts: 290
Loc: Canby, Oregon
Reg: 03-25-03
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09-27-24 10:25 AM - Post#2874256
In response to Mjgarcia88
You could also use longer mounting bolts and use spacers to move the coil away from the head, maybe even add a heat shield.
As a side question for anyone who might know. I see that engine has side engine mounts. Would that engine fit in a 1952 with side mounts? Does that engine have hydraulic lifters?
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Kyle G.
Silver Supporting Member
Posts: 158
Age: 29
Loc: Delanco, New Jersey
Reg: 11-29-15
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09-27-24 08:21 PM - Post#2874264
In response to Mjgarcia88
You can check the coil to make sure it's appropriate for the electrical system voltage of your car. 6V coils measure approximately 1.5 ohms across the + and - terminals. 12v coils measure approximately 3 ohms.
1950 Chevy Styleline Deluxe w/ '60 235 engine and '58 torque tube 3-speed overdrive with 3:55 gears in the back
1946 Willys CJ-2A |
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bobt
Contributor
Posts: 428
Loc: colonial heights va
Reg: 06-28-14
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09-28-24 02:26 AM - Post#2874265
In response to Mjgarcia88
If the old coil is internally resisted it will be printed on the side of the coil. I don't think you should buy a new coil.
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