Solid State Ignition Modules

This is the place to get help with technical matters concerning your M151 jeep

Moderators: rickf, raymond, Mr. Recovery

Post Reply
Pops506th
Private First Class
Private First Class
Posts: 19
Joined: January 13th, 2018, 1:36 am

Solid State Ignition Modules

Unread post by Pops506th » February 9th, 2018, 12:43 am

Howdy all,

This is my first post here. I just picked up a 151A1 a couple of weeks ago and it came with a bunch of spare parts. Among those are two different types of solid state ignition. It appears that one type uses a special rotor and the other type uses the standard rotor but requires a change to the cam. What can you guys tell me as far as reliability of each and any other issues that I may run into.

Thanks


Image

Image

Image
Last edited by Pops506th on April 13th, 2018, 2:58 pm, edited 1 time in total.
1962 M151A1
1985 M1010

Hambone
Brigadier General
Brigadier General
Posts: 2495
Joined: October 1st, 2010, 12:19 am
Location: El Dorado, Arkansas

Re: Solid State Ignition Modules

Unread post by Hambone » February 9th, 2018, 8:20 am

Welcome to the G, POP, share some pics of your jeep, the second pic is the Swiss module(latest and greatest) third pic is Prestolite model, both will work with no problem, the Swiss module is said to hold up better.
http://www.g838.org/viewtopic.php?f=3&t ... ion#p85574

User avatar
rickf
General
General
Posts: 19738
Joined: November 26th, 2007, 1:28 pm
Location: Pemberton, NJ.

Re: Solid State Ignition Modules

Unread post by rickf » February 9th, 2018, 10:57 am

The Prestolite modules had a problem with the potting material degrading and melting out of them and then the electronic components would short out. As long as the potting materiel is good and solid and not gooey it would be fine. As was said, the Swiss controls units are known for holding up well but the Prestolites that don't degrade do just as well. One thing to mention is that the Prestolite is a magnetic pick up type and the gap on the pick up needs to be adjusted with a BRASS feeler gauge. The Swiss is an optical sensor and has no adjustment.
1964 M151A1
1984 M1008
1967 M416
04/1952 M100
12/1952 M100- Departed
AN/TSQ-114A Trailblazer- Gone

Fil Bonica
Brigadier General
Brigadier General
Posts: 2607
Joined: December 9th, 2007, 10:49 am
Location: ~ Heaven ~

Re: Solid State Ignition Modules

Unread post by Fil Bonica » February 9th, 2018, 1:13 pm

Swiss controls have been super reliablr for me over 25 yeas and five jeeps.
Save rhe other for sale at next flea market.

Fil Bonica
K1ABW

Pops506th
Private First Class
Private First Class
Posts: 19
Joined: January 13th, 2018, 1:36 am

Re: Solid State Ignition Modules

Unread post by Pops506th » March 4th, 2018, 12:51 am

I went ahead and installed the Swiss setup.

I did run into an issue however. The coil that was installed had long mounting screws because the mounts on the coil were tall. Because of this, the ground wire for the module was too short. I removed the coil and found this setup underneath it. Anyone know what this is?

Image
Image

I had to unsolder the hot wire from the capacitor to remove it. I had a new coil and capacitor in the spare parts I got with the Mutt, so I installed them instead of this coil setup
Last edited by Pops506th on April 13th, 2018, 2:59 pm, edited 1 time in total.
1962 M151A1
1985 M1010

User avatar
Horst
Colonel
Colonel
Posts: 1956
Joined: December 9th, 2007, 6:21 am
Location: Munich, Germany

Re: Solid State Ignition Modules

Unread post by Horst » March 4th, 2018, 4:32 am

do you have a multimeter? Might just be a resistor for that specific coil.
Horst

1972 USMC M151A2 w/ROPS (ex Barstow) and M416
1962 M201 and trailer
1966 GTO,1982 E350 Skoolie, 1987 SJ413, 1987 911
Gone: 2xM35A2c, Unimog 404S, Hanomag AL28, DKW Munga

User avatar
rickf
General
General
Posts: 19738
Joined: November 26th, 2007, 1:28 pm
Location: Pemberton, NJ.

Re: Solid State Ignition Modules

Unread post by rickf » March 4th, 2018, 9:26 am

That is the early version of the coil which had the resistor attached to the bottom of it. They have not been available for many, many years. If that coil was still working then definitely hang on to it, it does have to be used with the resistor.
1964 M151A1
1984 M1008
1967 M416
04/1952 M100
12/1952 M100- Departed
AN/TSQ-114A Trailblazer- Gone

Pops506th
Private First Class
Private First Class
Posts: 19
Joined: January 13th, 2018, 1:36 am

Re: Solid State Ignition Modules

Unread post by Pops506th » March 4th, 2018, 8:23 pm

It was working just fine when I pulled it out. I only removed the points and coil to convert to the solid state because I hate screwing with points.

I did get some extra distributors with the vehicle, so I'll refurbish one of them with the points and re-install this setup in that one.
1962 M151A1
1985 M1010

User avatar
m3a1
Lt. General
Lt. General
Posts: 4027
Joined: August 7th, 2014, 6:36 pm

Re: Solid State Ignition Modules

Unread post by m3a1 » March 4th, 2018, 10:44 pm

This is a good time to revisit the fact that good, working original coils are in short supply. DO NOT discard it! If you do, tell us where your garbage can is.

User avatar
rickf
General
General
Posts: 19738
Joined: November 26th, 2007, 1:28 pm
Location: Pemberton, NJ.

Re: Solid State Ignition Modules

Unread post by rickf » March 5th, 2018, 9:57 am

ANY NOS ignition parts are getting to be in short supply so don't throw out anything if it is still operable! The replacements are for the most part all Chinese and are total garbage!!
1964 M151A1
1984 M1008
1967 M416
04/1952 M100
12/1952 M100- Departed
AN/TSQ-114A Trailblazer- Gone

Pops506th
Private First Class
Private First Class
Posts: 19
Joined: January 13th, 2018, 1:36 am

Re: Solid State Ignition Modules

Unread post by Pops506th » March 5th, 2018, 11:19 am

Yep. I'm hanging on to everything that is still working.

When did the Chinese stuff start hitting the market? I'm pretty sure none of the parts that I got with the vehicle were purchased after 1997 or so.

How can you tell the difference?
1962 M151A1
1985 M1010

Mark
Brigadier General
Brigadier General
Posts: 2085
Joined: September 19th, 2009, 11:33 pm
Location: South Dakota

Re: Solid State Ignition Modules

Unread post by Mark » March 5th, 2018, 4:53 pm

Maybe it would have Chinese writing on it?LOL, aw, I couldn't resist
mark


1968 m274A5
1960 m151
1981 m151A2
1964 m416
1971 m416

User avatar
rickf
General
General
Posts: 19738
Joined: November 26th, 2007, 1:28 pm
Location: Pemberton, NJ.

Re: Solid State Ignition Modules

Unread post by rickf » March 5th, 2018, 5:07 pm

Probably about ten years ago, starting with the coils. Then on to the ignition modules. The coils are the chrome ones so if yours are all the dull looking ones you are good to go.
1964 M151A1
1984 M1008
1967 M416
04/1952 M100
12/1952 M100- Departed
AN/TSQ-114A Trailblazer- Gone

Post Reply