D17 IV spark plug

In the last few years I've been using NGK plugs exclusively. I've had some in a tractor for over 10 years and with the EI conversion they look almost new. Where as some of the AC plugs I've been taking out are fouled. Don't waste you money on Champions as 40 years ago in a box of 10 you had at least 2 dead ones.

If it was fun to pull in LOW gear, I could have a John Deere.
Real pullers don't have speed limits.
If you can't make it GO... make it SHINY

I use autolites

www.awtractor.com
A&W TRACTOR 920-598-1287
KEEPING ALLIS-CHALMERS IN THE FIELDS THROUGH THE 21ST CENTURY

Autolite 295

Like them all, but love the "B"s.

Long reach resister NGK BR6ES. Non resistor B6ES

If it was fun to pull in LOW gear, I could have a John Deere.
Real pullers don't have speed limits.
If you can't make it GO... make it SHINY

I try to buy the old NOS green stripe A-C R45XLS spark plugs off of Ebay when I can find them for the D17 IV and the 170.

Don't bother with the new ones, they all seem to come from the same factory with different names on them.

Couple stories from the past on champion / AC plugs.

On a spring day in 1974, Dad came in from plowing and had dinner, while he was eating, I gassed the D17 up, checked the fluids, put new points and condenser in and new Champion plugs, and timed it. Dad went back to the field and about twenty minutes later he came back kinda mad and he asked what the hedoublehockeysticks I had done to the tractor and I told him and he said, "Put the old plugs back in." I cleaned them some and gapped them and put them back in and he took off. He got back from plowing while I was busy doing the night chores and I asked him how it went, He said it ran real good... and told me to not put another champion in anything again, except for the lawn mower. LOL

In 1975, my uncle had his car serviced at his local dealership and told the fellows to put only AC plugs into his car when doing the tune-up. He came back later and paid his bill and went home. It just didn't run right and looked, yup, champion plugs. Next day took the car back and told them to take the champions plugs out and the dealership was arguing with him and finally my uncle told them to check those plugs in their tester... Like Paul B. said 2 out of 10 were dead... it was 2 out of 8 that missfired when the pressure got up into operating range. Dealer told the mechanic to go get the proper A-C plugs for the Chevrolet. They checked those before putting them in, all were good and the car ran like it should, and were still in it 60,000 miles later when he traded it off.

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."

My first bad experience with Champion's was back in the late 60's when I ran my 66' Nova Drag car. I made a warm up pass with it, and it ran its usual ET, I then came back in the pits, and changed the plugs. I had stopped at the auto parts store on the way to the track that morning to get a new set of Autolites and they didn't carry Autolites so they fixed me up with a Champion equivalent. I screwed those Champions in and made another pass. As soon as I put it in forth gear, the engine started breaking up at about 800 foot mark. WTH? I changed jetting, timing, anything you could think of and couldn't figure out why the engine was breaking up in high gear. Sat down and thought, what did I do before all this started? Hmmm.... plugs. Nah, can't be. They're brand new! I took the old Autolites out of the tool tray that I had taken out, re-gapped them, tossed em' back in, and made a pass in first round of eliminations with my fingers crossed, and it ran like the very first pass again! After that, had a few more issues with my small air cooled engines, and just said that's it. No more Champions! I then became an Autolite dealer later on when I opened my business.... And that's my Champion story.. Some people never have any problems with them. I don't know. They don't work for me.....

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

	This site is not affiliated with AGCO Inc., Duluth GA., Allis-Chalmers Co., Milwaukee, WI., or any surviving or related corporate entity. All trademarks remain the property of their respective owners. All information presented herein should be considered the result of an un-moderated public forum with no responsibility for its accuracy or usability assumed by the users and sponsors of this site or any corporate entity.
	The Forum	Parts and Services	Unofficial Allis Store	Tractor Shows	Serial Numbers	History

Author	Message Topic Search Topic Options Post Reply Create New Topic Printable Version Translate Topic
Ryan Renko Members Profile Send Private Message Find Members Posts Add to Buddy List Orange Level Joined: 12 Sep 2009 Location: Edwardsville, I Points: 2338	Post Options Post Reply Quote Ryan Renko Report Post Thanks(0) Quote Reply Topic: D17 IV spark plug Posted: 26 Jun 2021 at 6:32pm
	What is the most favorable spark plug to use? I know some brands are junk compared to others. Thank you.

Sponsored Links

PaulB Members Profile Send Private Message Find Members Posts Add to Buddy List Orange Level Joined: 12 Sep 2009 Location: Rocky Ridge Md Points: 5192	Post Options Post Reply Quote PaulB Report Post Thanks(0) Quote Reply Posted: 26 Jun 2021 at 7:07pm
	In the last few years I've been using NGK plugs exclusively. I've had some in a tractor for over 10 years and with the EI conversion they look almost new. Where as some of the AC plugs I've been taking out are fouled. Don't waste you money on Champions as 40 years ago in a box of 10 you had at least 2 dead ones.
	If it was fun to pull in LOW gear, I could have a John Deere. Real pullers don't have speed limits. If you can't make it GO... make it SHINY

Steve in NJ Members Profile Send Private Message Find Members Posts Add to Buddy List Orange Level Access Joined: 12 Sep 2009 Location: Andover, NJ Points: 12043	Post Options Post Reply Quote Steve in NJ Report Post Thanks(0) Quote Reply Posted: 26 Jun 2021 at 7:24pm
	Autolites or NGK's I would recommend..... 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

Alex09(WI) Members Profile Send Private Message Find Members Posts Add to Buddy List Orange Level Joined: 15 Mar 2012 Location: CECIL WI Points: 1768	Post Options Post Reply Quote Alex09(WI) Report Post Thanks(0) Quote Reply Posted: 26 Jun 2021 at 7:58pm
	I use autolites
	www.awtractor.com A&W TRACTOR 920-598-1287 KEEPING ALLIS-CHALMERS IN THE FIELDS THROUGH THE 21ST CENTURY

Ryan Renko Members Profile Send Private Message Find Members Posts Add to Buddy List Orange Level Joined: 12 Sep 2009 Location: Edwardsville, I Points: 2338	Post Options Post Reply Quote Ryan Renko Report Post Thanks(0) Quote Reply Posted: 26 Jun 2021 at 8:10pm
	Do any of you have the Autolite or NGK part number? I guess that's what the man behind the parts counter gets paid to do!! Thanks! Edited by Ryan Renko - 26 Jun 2021 at 8:11pm

steve(ill) Members Profile Send Private Message Find Members Posts Add to Buddy List Orange Level Access Joined: 11 Sep 2009 Location: illinois Points: 89171	Post Options Post Reply Quote steve(ill) Report Post Thanks(0) Quote Reply Posted: 26 Jun 2021 at 9:09pm
	Autolite 295
	Like them all, but love the "B"s.

Ryan Renko Members Profile Send Private Message Find Members Posts Add to Buddy List Orange Level Joined: 12 Sep 2009 Location: Edwardsville, I Points: 2338	Post Options Post Reply Quote Ryan Renko Report Post Thanks(0) Quote Reply Posted: 26 Jun 2021 at 9:10pm
	Thanks Steve.

PaulB Members Profile Send Private Message Find Members Posts Add to Buddy List Orange Level Joined: 12 Sep 2009 Location: Rocky Ridge Md Points: 5192	Post Options Post Reply Quote PaulB Report Post Thanks(0) Quote Reply Posted: 27 Jun 2021 at 7:46am
	Long reach resister NGK BR6ES. Non resistor B6ES
	If it was fun to pull in LOW gear, I could have a John Deere. Real pullers don't have speed limits. If you can't make it GO... make it SHINY

Alex09(WI) Members Profile Send Private Message Find Members Posts Add to Buddy List Orange Level Joined: 15 Mar 2012 Location: CECIL WI Points: 1768	Post Options Post Reply Quote Alex09(WI) Report Post Thanks(0) Quote Reply Posted: 27 Jun 2021 at 8:46am
	Most D17's need the long 3/4" reach plug, Autolite 405. The autolite 295 is the short 3/8" reach plug. Both are non-resistor plugs, I beleive.
	www.awtractor.com A&W TRACTOR 920-598-1287 KEEPING ALLIS-CHALMERS IN THE FIELDS THROUGH THE 21ST CENTURY

JC-WI Members Profile Send Private Message Find Members Posts Add to Buddy List Orange Level Access Joined: 11 Sep 2009 Location: wisconsin Points: 34430	Post Options Post Reply Quote JC-WI Report Post Thanks(0) Quote Reply Posted: 27 Jun 2021 at 11:51pm
	I try to buy the old NOS green stripe A-C R45XLS spark plugs off of Ebay when I can find them for the D17 IV and the 170. Don't bother with the new ones, they all seem to come from the same factory with different names on them. Couple stories from the past on champion / AC plugs. On a spring day in 1974, Dad came in from plowing and had dinner, while he was eating, I gassed the D17 up, checked the fluids, put new points and condenser in and new Champion plugs, and timed it. Dad went back to the field and about twenty minutes later he came back kinda mad and he asked what the hedoublehockeysticks I had done to the tractor and I told him and he said, "Put the old plugs back in." I cleaned them some and gapped them and put them back in and he took off. He got back from plowing while I was busy doing the night chores and I asked him how it went, He said it ran real good... and told me to not put another champion in anything again, except for the lawn mower. LOL In 1975, my uncle had his car serviced at his local dealership and told the fellows to put only AC plugs into his car when doing the tune-up. He came back later and paid his bill and went home. It just didn't run right and looked, yup, champion plugs. Next day took the car back and told them to take the champions plugs out and the dealership was arguing with him and finally my uncle told them to check those plugs in their tester... Like Paul B. said 2 out of 10 were dead... it was 2 out of 8 that missfired when the pressure got up into operating range. Dealer told the mechanic to go get the proper A-C plugs for the Chevrolet. They checked those before putting them in, all were good and the car ran like it should, and were still in it 60,000 miles later when he traded it off.
	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."

WF owner Members Profile Send Private Message Find Members Posts Add to Buddy List Orange Level Joined: 12 May 2013 Location: Bombay NY Points: 5083	Post Options Post Reply Quote WF owner Report Post Thanks(0) Quote Reply Posted: 28 Jun 2021 at 7:05am
	I have had guys laugh at me when I tell them to stay away from Champion spark plugs in an Allis Chalmers tractor (one just last week on the Facebook AC Tractor group). When someone tells me that their Allis Chalmers tractor is running poorly, the first thing I check is to see if it has Champion plugs. Way back when we had snow sleds (late 60's to early 70's) Bosch plugs were way better than Champions.

Steve in NJ Members Profile Send Private Message Find Members Posts Add to Buddy List Orange Level Access Joined: 12 Sep 2009 Location: Andover, NJ Points: 12043	Post Options Post Reply Quote Steve in NJ Report Post Thanks(0) Quote Reply Posted: 28 Jun 2021 at 8:33am
	My first bad experience with Champion's was back in the late 60's when I ran my 66' Nova Drag car. I made a warm up pass with it, and it ran its usual ET, I then came back in the pits, and changed the plugs. I had stopped at the auto parts store on the way to the track that morning to get a new set of Autolites and they didn't carry Autolites so they fixed me up with a Champion equivalent. I screwed those Champions in and made another pass. As soon as I put it in forth gear, the engine started breaking up at about 800 foot mark. WTH? I changed jetting, timing, anything you could think of and couldn't figure out why the engine was breaking up in high gear. Sat down and thought, what did I do before all this started? Hmmm.... plugs. Nah, can't be. They're brand new! I took the old Autolites out of the tool tray that I had taken out, re-gapped them, tossed em' back in, and made a pass in first round of eliminations with my fingers crossed, and it ran like the very first pass again! After that, had a few more issues with my small air cooled engines, and just said that's it. No more Champions! I then became an Autolite dealer later on when I opened my business.... And that's my Champion story.. Some people never have any problems with them. I don't know. They don't work for me..... 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