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Old 06-10-2021, 09:45 AM
98 SNAKE EATER 98 SNAKE EATER is online now
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Question Anyone here running a Breakerless SE ignition?

I know this has been asked before in other forums, but I have a few questions that might be T/A specific.

Looking to upgrade the factory points on my 70 TA to a Breaklerless SE setup

Tried emailing Breakerless (M&H Electric) direct, but have yet to get a response


1) Does it work with the factory tach?
The Breakerless website says it will work with factory tachs and some on other forums have confirmed this, but I know our tachs are a little more finicky and just wann abe sure.
The previous owner of my other 70 TA fried the tach when he tried to connect an MSD box and that's the last thing I wanna do with this car.

2) If it does in fact work with the factory tach, would I also be able to run an RPM switch using the same tach signal without buggering things up?
My plan is to install an RPM activated switch to trigger a hidden shift light like I do with my other cars (see vid)

https://www.youtube.com/watch?v=nLTr1Wyk7uM

I'll most likely use the parking brake switch with a diode to light up the BRAKE light on the dash


3) Does the Breakerless SE use an off the shelf module?
From what I see, it looks somewhat similar to a standard GM type module, but with a raised optical sensor

Just curious if they used an actual production unit that can be easily sourced in the event of a failure


4) I see several Breakerless setups being sold through Jegs, Summit, Ames, American Autowire, Lectirc Limited, etc., etc.

Are these all made by M&H Electric?

  #2  
Old 06-10-2021, 10:24 AM
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Norwood Norwood is offline
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I’ve used pertronx for 10 trouble free years with a working tach in my 70. https://pertronixbrands.com/pages/pertronix-ignition

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  #3  
Old 06-10-2021, 11:05 AM
98 SNAKE EATER 98 SNAKE EATER is online now
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Looking to be as stealth as possible with the factory 1-wire

Also the Breakerless would be easier to swap back to points in the event of a failure

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Old 06-10-2021, 12:01 PM
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padgett padgett is offline
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Said before but "in general" a single wire tach will not work with a transistor ignition. In the figures below the single wire tach is what is to the right of point "D" and needs a strong trigger. The transistor section to the left of point "D" is an amplifier for a lesser signal. Which circuit you use depends on whether the coil is above or below the "coil ter".

I have ordered a circuit board from eBay but the vendor has two units and when received will know which is which.

Back in the day I could build a separate module for the transistor front end to connect between a transistor ignition and a single wire (usually hood) tach.
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Last edited by padgett; 06-10-2021 at 12:11 PM.
  #5  
Old 06-10-2021, 12:55 PM
CanAmT/AGTO CanAmT/AGTO is offline
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Quote:
Originally Posted by Norwood View Post
Iíve used pertronx for 10 trouble free years with a working tach in my 70. https://pertronixbrands.com/pages/pertronix-ignition
Same here in my 71 a Pertronix 3, w/Tach no issues

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  #6  
Old 06-10-2021, 06:40 PM
DANTIP DANTIP is offline
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Default Breakerless SE

The Breakerless SE system has been bulletproof for me. I put it into every vintage GM distributor possible. No wiring issues, no dwell or points. I probably have combined over 50,000 miles on these and have been thrilled with them.

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Old 06-10-2021, 10:52 PM
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I had great results from Dave's Small Body HEI: https://www.davessmallbodyheis.com/about

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