MSD Blaster 2 coil

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Jul 6, 2013 | 11:53 AM

Bandit54

Thread Starter

Burning Brakes

Joined: Jan 2013

Posts: 753

Likes: 111

From: Barnhart, Missouri

MSD Blaster 2 coil

Anyone using a MSD Blaster coil on a stock point system? I'm having problem with the point pitting and sticking after less then 100 miles. The dwell an timing are dead on everything runs good then it just stops, checked no fire to cap or plugs. Pull cap make sure point will open put cap back on starts up runs OK for a short distance then it stalls. Is the coil compatible with stock point system? I have a problem with the coil resistance and going to change to a different coil. Any feedback would be appreciated.
Thanks

Engine is a 68 427 with stock point system not a TI.

Last edited by Bandit54; Jul 6, 2013 at 11:55 AM. Reason: Not stating year and engine

Jul 6, 2013 | 12:30 PM

7t9l82

Le Mans Master

Joined: Oct 2010

Posts: 6,952

Likes: 858

From: melbourne florida

2023 C3 of the Year Finalist - Modified

depending how often the car is driven can effect the points. you may want to convert to electronic ignition, there are many systems that fit in the stock housing. might consider an ignition box too like crane or msd etc

Jul 7, 2013 | 08:56 AM

tektrans

Drifting

Joined: Apr 2005

Posts: 1,918

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From: Central NJ

Do you have the coil mounted straight up as MSD recommends? If not that could be your problem.

Jul 7, 2013 | 11:23 AM

Bandit54

Thread Starter

Burning Brakes

Joined: Jan 2013

Posts: 753

Likes: 111

From: Barnhart, Missouri

Coil is mounted in the normal mounting position for a 3/2 setup with shielding. My question now after checking voltage and resistance are these numbers correct.
Power to positive terminal on coil:
Key on: 4.35 volts
Key turn to start: 9.9 volts
Engine running: 9.2 volts

When I disconnect the lead wires to the positive terminal on the coil and check voltage I get a reading of:
Key on: 12.5 volts
Key turn to start: 10.3 volts

I have all new wiring in the car, new coil, new points and condenser, cap, and rotor.

Resistance across the coil:
Positive terminal to negative terminal: 00.8
Positive terminal to center terminal: 5.17
Negative terminal to center terminal: 5.17

I have been told correct resistance across terminal should be 1.24 to 1.46 for a point system.

Any and all feedback would be appreciated
Thanks

Jul 7, 2013 | 12:19 PM

oldalaskaman

Le Mans Master

Joined: Aug 2010

Posts: 9,272

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put a ballast resister in the power wire

Jul 7, 2013 | 12:25 PM

Mike Ward

Race Director

Joined: Jul 2001

Posts: 15,892

Likes: 42

Quote:

Originally Posted by Bandit54

Is the coil compatible with stock point system?

I'd ask MSD.

Is the stock resistance wire still in place?

Is the points capacitor in good shape?

If it were me, I'd ditch the coil. It's not giving you anything more than a stock unit.

Jul 7, 2013 | 01:34 PM

Bandit54

Thread Starter

Burning Brakes

Joined: Jan 2013

Posts: 753

Likes: 111

From: Barnhart, Missouri

The stock resistance wire is still in place, that's not saying its correct it is a new wiring harness.
The points and capacitor are both new, Echlin CS786 and RR175
I agree the coil is in question because of it resistance in neither matches the resistance for points or TI.
That why I'm questing the voltage going to the coil what is the correct voltage with key on, when starting, and after starting and running.
I have talked to MSD in regards to voltage when running their response is as long as its under 9 volts the coil would be OK.

Jul 7, 2013 | 02:46 PM

ddawson

Le Mans Master

Joined: Mar 2001

Posts: 5,741

Likes: 646

From: Lincoln, CA

Not sure if this would help but when I replaced my points with the Breakerless system they state only to use with coils of 1.2 to 1.8 ohms. The MSD won't work.

I did find the Accel Coil that every Auto parts store works mine at 1.4 ohms.

The MSD is .7 ohms.