Print Page | Close Window

B spark plugs- reality, voodoo or coincidence

Printed From: Unofficial Allis
Category: Allis Chalmers
Forum Name: Farm Equipment
Forum Description: everything about Allis-Chalmers farm equipment
URL: https://www.allischalmers.com/forum/forum_posts.asp?TID=144231
Printed Date: 01 Jun 2025 at 6:46am
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com


Topic: B spark plugs- reality, voodoo or coincidence
Posted By: HoughMade
Subject: B spark plugs- reality, voodoo or coincidence
Date Posted: 07 Nov 2017 at 12:22pm
My Dad had this little B that he used for mowing at his place, but it stopped running a few years ago and he never got around to getting it going again.  It was inside for several years, but in the humid basement of the barn and one cylinder (with the exhaust valve happening to be opened) got some light surface rust and stuck the piston.

Dad passed away this past March, and I brought the B to my place last month.  I got it unstuck, went through the head, and generally adjusted repaired and replaced a few things.  The time came this past Saturday to try to start it.  This is a FMJ magneto fired ignition.

I initially static timed it to the "Fire" mark, but thanks to this forum, discovered that it needed to be timed to TDC.  That accomplished, it fired and sputtered, but no start.  The points were cleaned and gapped and it had new Autolite 295 spark plugs.  I adjusted the magneto a bit and got more sputtering than before, but no running.  Finally, based on something I read here, I took the spark plugs out and put 3 of the Champion J8s in it that it had when I got it.  One of the J8s was from the stuck cylinder and was rusty and pitted.  So, this morning, with 3 Champion J8s and one Autolite 295 (in #4), I tried it again, and it fired and ran quite well for a first start in 6 or 7 years.

  https://www.youtube.com/watch?v=DrIgsqmttTM " rel="nofollow - https://www.youtube.com/watch?v=DrIgsqmttTM  ;

So my questions is this: Is there a logical reason why this old girl would prefer old Champion sparkplugs over new Autolight 295s?  It is coincidence and nothing to do with the spark plugs? Is it dumb luck?  Is it voodoo?

Thoughts?


-------------
1951 B



Replies:
Posted By: Gerald J.
Date Posted: 07 Nov 2017 at 1:49pm
Spark plug gap? Resistor plugs? Airgap plugs?

Gerald J.


Posted By: HoughMade
Date Posted: 07 Nov 2017 at 1:58pm
Champion J8 versus Autolite 295.  No resistors in either, both gapped to .030".  Both traditional electrode plugs.  When I get home today, the AL 295s are going back in to check to see if it runs with them.  Maybe it just decided to start when it did and the plugs weren't part of it.

-------------
1951 B


Posted By: Bill Long
Date Posted: 07 Nov 2017 at 2:00pm
Absoutly Delighted to hear that another of my favorites is alive and well.  
Thanks for what you have done to keep a name I love alive.
If you can get pictures would love to see them
By the way the plug of choice is the Auto Light non resister plugs.  When we sold them new we used the AC45 - 48 and at that time they worked well.  However, it is my understanding that AC plugs are not so good anymore.
Good Luck!
Bill Long


Posted By: CrestonM
Date Posted: 07 Nov 2017 at 2:11pm
I vote voo-doo. I have always heard people say (and from my experience) a B will not run well on champion plugs.


Posted By: HoughMade
Date Posted: 07 Nov 2017 at 2:46pm
Voodoo or coincidence it is...

Pics?  I have a few:

Here is my Dad in about 2005 mowing:


Here it is a few weeks ago after I rolled it off the trailer and pressure washed it:


Here is the way it has look for the last few weeks.  This was right after I bolted the head back on.  It now (as seen in the video linked above) has everything on it but the hood.



-------------
1951 B


Posted By: Ted J
Date Posted: 07 Nov 2017 at 4:05pm
You're doing great with it.  I can't wait to see YOU riding it and cutting the grass in the same spot as your Dad.
I'm glad you have some great memories along WITH the tractor.  B's and C's are great little tractors to have fun on.


-------------
"Allis-Express"
19?? WC / 1941 C / 1952 CA / 1956 WD45 / 1957 WD45 / 1958 D-17


Posted By: Gerald J.
Date Posted: 07 Nov 2017 at 6:16pm
There are a couple reasons why Champion plugs are not liked in tractors. First one is that the Champion ceramic doesn't clean after it gets covered with carbon from running rich. The second one is worse, Champion has concluded that ALL vintage tractor engines are oil burners and need a series gap in the wire to the center to cause higher voltage from the ignition coil to better burn an oil rich mixture. Trouble is that raises the voltage in a magneto sometimes to the point of damaging the magneto coil and loosing ignition from sparking to ground. Really old (30 year or more) Champion plugs don't have these defects. Other plug brands so far don't have these design defects.

.030 sounds wide to me, but the shop manual I have on line says .030 to .040".
http://geraldj.networkiowa.com/Trees/Allis-Chalmers-G-B-C-CA-Service.pdf" rel="nofollow - http://geraldj.networkiowa.com/Trees/Allis-Chalmers-G-B-C-CA-Service.pdf

Gerald J.


Posted By: DaveKamp
Date Posted: 07 Nov 2017 at 10:41pm
My dislike for Champion plugs stems from an incident where one plug's crimp failed... where the base grips the ceramic tower... it spit the tower right out, electrode and all, and the guts fell, with wire still attached, down into the bilge of the boat.

Amidst that incident, a piece of ceramic clearly chipped loose and fell into the engine, scoring-hell out of the #1 cylinder, consequently ruining compression.

I'd never have that happen before, but I explained the incident to five other friends, and they were all able to identify the brand of plug BEFORE I mentioned it. When I asked them how they came to that conclusion, they said that it happened all the time.

One of them also suggested that I start up an engine running Champion plugs, and spray a little WD-40 down at the crimp, to see if they were sealing up... and he was right- they all bubbled. The engines running other brands (Nippondenso, AC, Autolite, etc) did not.

Older Champions may have been good, but that one incident, and Champion's shunning the issue, have assured that I will never, ever, ever purchase or recommend their product. To have one fail is one thing... to have it destroy a perfectly good engine, is totally another. To find that it's happened to many people, means they simply do not care.

-------------
Ten Amendments, Ten Commandments, and one Golden Rule solve most every problem. Citrus hand-cleaner with Pumice does the rest.


Posted By: HoughMade
Date Posted: 08 Nov 2017 at 9:06am
Well, I found another Champion J8 lying around, so that's what's in the tractor now....and these are at least 20+ years old.  When I am certain I have everything dialed in, I may switch to the new Autolites...I've already got $14.95 plus tax into them.

Anyhoo, the little B not only runs, but moves (which wasn't really in doubt once it was running.

[TUBE]kv-HXI-r3eM[/TUBE]


-------------
1951 B


Posted By: HoughMade
Date Posted: 01 Jun 2018 at 8:27pm
OK- well, if you’ve had good luck with the Autolite 295s, bless you. I’m sticking with the Champion J8Cs.

As I said back in the original post last fall, I could not get it to start very well at all and and when it did start, it barely ran with new Autolite 295s, but when I put the old Champions back in (including one that had been rusted in a cylinder that had stuck (I cleaned it up), it started and ran great. However, thought it may be coincidence because I had adjusted a couple of other things.

Over the winter, I started with taking the battery box off for repair and replaced the side cover and lid and ended up painting everything from the steering post forward. When I reassembled everything, I put the barely used Autolite 295s back in, figuring that they had not been the problem.

Well, I’m here to tell you, they were the problem. Changing nothing else, tonight I put new Champon J8Cs in and it started right up, purred like a kitten and I just got through with a little test mowing in the front yard. Ran smooth. I’m assuming I got a bad batch of Autolites, but there is no doubt that they were causing the problem. They are the only thing I changed.

I went from barely running and stalling out when trying to mow in 1st gear to running super-smooth and mowing great in 2nd gear with just the spark plug change.



-------------
1951 B


Posted By: Ted in NE-OH
Date Posted: 01 Jun 2018 at 8:43pm
Coincedence, change back and see what happens.

-------------
CA, WD, C, 3 Bs, 2 Gs, WC, I-400, 914


Posted By: HoughMade
Date Posted: 01 Jun 2018 at 8:48pm
2 times was enough for me.

-------------
1951 B


Posted By: SteveM C/IL
Date Posted: 01 Jun 2018 at 10:02pm
If you foul a plug with today's crap gasoline,the only way to salvage one is to burn it  with a torch.Get the electrode red and cook the porceline.Careful,the whole thing gets way too hot to handle by hand.


Posted By: john(MI)
Date Posted: 01 Jun 2018 at 10:21pm
The way things are made and handled now a days, someone tossed those plugs on a shelf or counter and cracked them.  I've been down that road before.


-------------
D14, D17, 5020, 612H, CASE 446


Posted By: Phil48ACWC
Date Posted: 02 Jun 2018 at 7:06am
IXNGK 7189 {#2292, XR4IX} Iridium IX

The best plug by far that I found for my Allis from Rock Auto.


Posted By: Dick L
Date Posted: 02 Jun 2018 at 8:20am
Other than close to twenty years back when Champion had quality problems I have had just as good performance with the Champion J 8's as the Autolite . If Champion wouldn't have solved the quality problem they wouldn't be any Champion plugs to buy now. I still run Champion plugs in several tractors.




Posted By: Alberta Phil
Date Posted: 02 Jun 2018 at 8:59am
I had a problem with the Autolite 295 plugs recently in my WD.  I bought a new set a few months ago from Napa and installed them and the tractor ran terrible. Hard to start and lots of misfires.  I had a close look and the new ones had "made in china" on the boxes, but no mark on the plugs.  Also, the metal plug base was a silver color.
I went through my used plugs and got a decent set of 295's that were marked on the plug as "made in USA" and the metal base was black.  Installed these and the tractor has run fine ever since!


Posted By: DougS
Date Posted: 02 Jun 2018 at 9:23am
If you’re going to use a foreign plug, use NGK. They’re made in Japan, not China. I don’t have to say anything about Chinese quality control and cost cutting. It speaks for itself.


Posted By: Steve in NJ
Date Posted: 02 Jun 2018 at 9:44am
That's interesting. With all the Autolite plugs we've sold over the years, I've never seen a silver based plug. All the ones that I've ever seen were black base. Sometimes some plugs just don't work in a certain engine for whatever reason and another mfr. plug does. Weird, but it happens. Can't explain it. I've never had any luck with Champions in anything I own, so I just use other brands like Autolite, AC, or NGK. Just for the heck of it, I picked up a set of J8 Champs last summer and tossed em' in the B. Fired up okay, idled okay, but as soon as I started to bring the rpm's up, the engine didn't want to hear it! Spittin' sputterin', black smoke. Like I had my hand over the Carb inlet. I started to laugh and said to myself "I'm glad to see nothin's changed". Put the used Autolite 295's back in and it ran like a champ (no pun intended) again. RPM's came right up, revved great. I dunno, can't esssplain it....
Steve@B&B


-------------
39'RC, 43'WC, 48'B, 49'G, 50'WF, 65 Big 10, 67'B-110, 75'716H, 2-620's, & a Motorhead wife


Posted By: chaskaduo
Date Posted: 02 Jun 2018 at 11:54am
Phil48ACWC are those iridium plugs from Rock Auto resistor or non resistor plugs? HoughMade B has a magneto and needs non resistor plugs. Curious for myself too.

-------------
1938 B, 79 Dynamark 11/36 6spd, 95 Weed-Eater 16hp, 2010 Bolens 14hp


Posted By: DougS
Date Posted: 02 Jun 2018 at 12:56pm
The part number and the fact that it’s iridium suggests that it’s a resistor plug.


Posted By: chaskaduo
Date Posted: 02 Jun 2018 at 1:01pm
Thanks Doug  Smile

-------------
1938 B, 79 Dynamark 11/36 6spd, 95 Weed-Eater 16hp, 2010 Bolens 14hp


Posted By: Alberta Phil
Date Posted: 02 Jun 2018 at 7:44pm
Steve. I got those from my local Napa store where I always deal.  I showed them to Tom, the owner, and he was surprised that they were Chinese made, as stock brought in before from the warehouse was U.S. made.  I might have to get them from you in the future!!


Posted By: Phil48ACWC
Date Posted: 03 Jun 2018 at 8:09am
NGKXR4IX is a resistor plug. I'm running a 12V ignition with electronic ig module in a WC with WD 45 crank and WC pistons. Compression Ratio is around 7:1. The engine is freshly built and runs excellent with the NGK's. When first built I tried brand new Autolites and Champions and was very disappointed. The Iridium NGK are far better quality and get to temperature far quicker to prevent fouling. The Iridium last 4 times longer than conventional plugs which means I may never have to change plugs again in my year round used WC. Rock Auto.com by far had the best price. I'll never go back to conventional plugs.


Posted By: Phil48ACWC
Date Posted: 03 Jun 2018 at 8:19am
Here's my WC with NGK's doing its thing.


Posted By: Steve in NJ
Date Posted: 03 Jun 2018 at 9:46am
Phil,
Nice looking snow removal equipment....  Thumbs Up


-------------
39'RC, 43'WC, 48'B, 49'G, 50'WF, 65 Big 10, 67'B-110, 75'716H, 2-620's, & a Motorhead wife


Posted By: BigMo(TX)
Date Posted: 03 Jun 2018 at 7:36pm
I am having a similar problem with a ‘39 B, this tractor has sat for a couple of years. I’ve had the tank cleaned and lined, had the carb rebuilt, the inside of the mag seemed clean and reset the points, and the plug wires seem clean and in good shape. I ordered a set of Autolite 295s online and when they came they have the sliver base, the plugs that were in it were in bad shape. I can not even get this tractor to sputter.


Posted By: HoughMade
Date Posted: 12 Jul 2018 at 7:29am
For the “rest of the story” read here:

http://www.allischalmers.com/forum/topic151330_post1263385.html#1263385" rel="nofollow - http://www.allischalmers.com/forum/topic151330_post1263385.html#1263385

Long story short, I had a weak magneto and, for whatever reason, it would work better with the Champions than Autolites. With a newly rebuilt mag, the Autolites work fine.

-------------
1951 B


Posted By: DougS
Date Posted: 12 Jul 2018 at 8:07am
You stated that you put the “old Champions” back in. Would new Champions have worked as well as the old ones? Probably not.


Posted By: Brian Jasper co. Ia
Date Posted: 12 Jul 2018 at 9:22am
One thing to remember is Champion makes plugs for everybody at one time or other. It strictly depends on what number is tooled up to run and the demand. If say Autolite is in the beginning of a production run of #26 and a huge order for 295s come in, they will go to Champion and have them make the run.

-------------
"Any man who thinks he can be happy and prosperous by letting the government take care of him better take a closer look at the American Indian." Henry Ford


Posted By: JC-WI
Date Posted: 12 Jul 2018 at 10:03am
Every time I read a champion story, I think of three distinct times that the Champion plugs were at fault.
 There were certain places you use champions like in the older chrysler engines... But don't put them in a WD, WD45, D17, 170, for sure.
 First story tops the list was my uncle had a 66 impala and he took it in to have serviced and plugs changed at 60,000... Told the dealership that he wanted AC plugs.  Later he picked up the car and it just didn't run right and looked and seen they had put champions in, he went back and told them he specifically stated he wanted AC plugs and seen they put champs in. OK, they would check the plugs... took the champs out and found 3 of the 8 failed on the tester under pressure, then they went and got a new box of plugs and found several in there no good. The shop man said to the mechanic to go get the AC plugs from the parts store. tested them in the machine and they all were good. Those were the last plugs in it till the tranny went out.
  second one was dad was starting spring plowing and he came up for dinner and I did a 'tune-up' on the D17 with new points condenser rotor and champion plugs and set by ear and timing light. He went back out to plow and came back about 15 minutes later and was very disgusted and said "What the hell did you do to the tractor?" I told him and he said 'Put the old ones back in.' I did and he went back to plowing...
 Third one was I could hear the neighbor with his D17 spitting and sputtering  a quarter mile away, one day he came up to have his back blade welded and the loader frame too... and I said lets take a look at why it doesn't run right. Took the plugs out and said "Theres your problem, you got champions!". I put AC45 plugs in, then looked at the points and cleaned them up, pulled the valve cover and he cleaned the gunk out of that while I set the valves. Looked at the air cleaner and cleaned crap from that and put in new oil. Cleaned out the sediment bowl and fired the think up, man that thing ran nice. He was tickled pink...
I want a plug tester that I can check all the plugs in so I knew if they are good new or used. Don't trust the manufactures anymore for quality control.


-------------
He who says there is no evil has already deceived himself
The truth is the truth, sugar coated or not. Trawler II says, "Remember that."


Posted By: DougS
Date Posted: 12 Jul 2018 at 11:26am
Since most of these plugs are now made overseas, you may as well stick with plugs made in a country where quality still counts. I’ve never had a problem with an NGK plug.



Print Page | Close Window

Forum Software by Web Wiz Forums® version 11.10 - http://www.webwizforums.com
Copyright ©2001-2017 Web Wiz Ltd. - https://www.webwiz.net