Bill,

I am not a fan of NGK either, while growing up having many a dirt bike and snowmobile, we would stop for a break and then when we went to go again the plugs would have no spark, had buckets of junk NGK. I switched to Bocsh and one time about 14 years ago me and my brother were snowmobiling and we stopped for a break, when we went to go his sled would not run, he changed plugs several times and I kept telling him to try the plugs from mine and he would not believe me that the NGK's were junk. He was going to leave his sled in the woods and wanted me to give him a ride out. I finally convinced him to try my Bosch plugs and he did. His sled started first pull and never ran better. I on the other hand I had to use his plugs and ran on one cylinder all the way out.

He is 11 years older than me and has much more mechanical experience, but I sure made a believer out of him that day that the NGK's are junk. The bosch Platinums work great in the two strokes and while all the guys on the lake are fouling and swapping those NGK's constantly, mine never misfires and I have had the same plugs in a sleds and outboards for years.

55 Vicky & customline

58 Rack Dump, 55 F350 yard truck, 57 F100

59 & 61 P 400's, 58 F100 custom cab, 69 F100, 79 F150, 82 F600 ramp truck, 90 mustang conv 7 up, 94 Mustang, Should I continue?

AussieBill. What NGK plugs should I be using in my 292.. gaped at ?? with petronix....



"Came too close to dying to stop living now!"

Way back when i was a kid my brother wanted to set the plugs on the lawn mower,we didnt have a feeler gage so i told him to use a dime,he didnt have a dime so he used  two quarters.  Carl 

Mark, growing up using champion plugs, i was used to the heat ranges and numbering system, as the years moved on tuneing hundreds of cars in business, i seemed to encounter more broken ceramic electrode insulators. It was while racing 302w at drags that we changed to NGK plugs and wow! instant higher rpm range and better times, since then i,ve stayed with them. regards bill.

  AussieBill            YYYY    Forever Y Block     YYYY

 Down Under, Australia

I don't use Champion plugs at all. I use Motorcraft and Autolite. Champions and Fords don't mix, most Ford techs I know won't use them. One reason is they seem to "weld" themselves to the head surface and can be a chore to remove. Often, in the process they end up cracked or worse.

57 Black Tbird 312/auto

I have always use Autolite/Motorcraft in most of my cars.  I have had two Champion plugs blow out their porcillin centers when I did use them.  Of course I have only been driving for 51 years.

Doug T

The Highlands, Louisville, Ky.

Interesting Billy. You and Ted have come to the same conclusion. I never found a difference until you encounter misfire. Must be something there though if Ted finds it on a dyno. With the blown motor in my car and an MSD Blaster I've been using .042, maybe I'll try closing it down and see what happens.  

Frank/Rebop

Bristol, In ( by Elkhart) 

Spark jumps from sharper corners much better than rounded, I have always filed my plugs by flattening the bottom of the strap, then taper each edge and the end into a paramid so the bottom edges by the electrode have the sharp corners. Bend the strap so the end of it is center of the electrode, not going past it. I have been doing this for 30 plus years and have never had problems with fouling, skipping plugs.

Also through experimenting with chain saws when I was a teen working in the woods and on snowmobiles, dirt bikes etc. I would take the plug out, change the gap, and retry in the hard wood over and over and over trying many different gap settings and always found more power by going to a smaller gap then recommended. Gapping larger always lost power.

From My back yard experiments.

55 Vicky & customline

58 Rack Dump, 55 F350 yard truck, 57 F100

59 & 61 P 400's, 58 F100 custom cab, 69 F100, 79 F150, 82 F600 ramp truck, 90 mustang conv 7 up, 94 Mustang, Should I continue?

I lean towards Autolite and Motorcraft sparkplugs in the FoMoCo engines, AC in the GM products, and can not remember the last time I actually purchased a Champion spark plug.  Testing of the various brands on the dyno shows no difference in performance providing the gaps and heat ranges are the same so it really just ends up being a brand preference or how well the spark plugs hold up over time.

Lorena, Texas (South of Waco)

I've got mine gapped 40>42 and it starts and runs great. Gary

       

Gary, 55 Vicky, St. Germain, Wisconsin