spark plugs ?

rock54

Member
Now that I have a great running 9N again. What would be the best spark plugs to run in my 47 9N? I'm using Autolite 216 now but that was just to get it started. maybe they are ok? I had the engine totally rebuilt about 14 years ago but have only put about 50 hours on it moving trailers and boats around my back yard,
 
Now that I have a great running 9N again. What would be the best spark plugs to run in my 47 9N? I'm using Autolite 216 now but that was just to get it started. maybe they are ok? I had the engine totally rebuilt about 14 years ago but have only put about 50 hours on it moving trailers and boats around my back yard,
NGK3112 is what I have found to work the best
 
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I understand the aversion to buying Chinese products, but so far, I've never received a bad Autolite plug.
You have been lucky then. I had auto lite plugs in a WD45 I have and they fouled out with in a week and the NGK3112 have been in it for over 4 years and they have yet to foul
 
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I have had at least 4 NGK plugs fail, running in the 1951 8N. Now using Champion. I think quality varies, even among brands, from time to time. This year Autolites perform well, next year NGK, year after, something else!

I do use NGK in both my standby generators, though. They both run on LPG, and not gasoline, so that might have something to do with it. zuhnc
 
I understand the aversion to buying Chinese products, but so far, I've never received a bad Autolite plug.
This sums it up as I have had quite a few bad autolite plugs. I have some new autolites for a N on the shelf now they were bad out of the box. I chased bad autolite plugs for several years around 2010/2011. Autolite even admitted they were JUNK.



For those who don't know the semi-recent history of Autolite plugs, these were made by Ford for years and were the first choice for performance applications, no matter what brand motor you ran (and to a large extent, Fram has been living on that reputation ever since). But they were victims of their own success, they very nearly put Champion out of business because they had so much of the aftermarket sales. The 'gubmint' stepped in and forced Ford to sell off the spark plug division, which they did (to Fram). Ford continued to use Autolite plugs in their new cars (purchased from Fram) but started having warranty complaints of poor-running cars, traced to defective plugs. Fram wouldn't address the quality-control issues, so Ford went back into the plug business. Initially just for their own use, but they started marketing them through parts houses again and started gaining market share... a lot of market share. The govt stepped in again (due to complaints from Champion, and now Autolite), but this time Ford agreed to withdraw from the aftermarket and only sell though their new car dealers and fleet outlets.



Fram/Autolite quality got so bad at one point that if you bought 8 plugs, it was nearly 100% that at least one would fail within a few hundred miles. They finally improved quality somewhat, and to lure people back started offering a 'lifetime' warranty.

I hope they go bankrupt: )
 
I have had one - notice ONLY ONE - NGK go bad, compared to MANY other brands. NGK's are all I use in any I work on or own now!
 
This sums it up as I have had quite a few bad autolite plugs. I have some new autolites for a N on the shelf now they were bad out of the box. I chased bad autolite plugs for several years around 2010/2011. Autolite even admitted they were JUNK.



For those who don't know the semi-recent history of Autolite plugs, these were made by Ford for years and were the first choice for performance applications, no matter what brand motor you ran (and to a large extent, Fram has been living on that reputation ever since). But they were victims of their own success, they very nearly put Champion out of business because they had so much of the aftermarket sales. The 'gubmint' stepped in and forced Ford to sell off the spark plug division, which they did (to Fram). Ford continued to use Autolite plugs in their new cars (purchased from Fram) but started having warranty complaints of poor-running cars, traced to defective plugs. Fram wouldn't address the quality-control issues, so Ford went back into the plug business. Initially just for their own use, but they started marketing them through parts houses again and started gaining market share... a lot of market share. The govt stepped in again (due to complaints from Champion, and now Autolite), but this time Ford agreed to withdraw from the aftermarket and only sell though their new car dealers and fleet outlets.



Fram/Autolite quality got so bad at one point that if you bought 8 plugs, it was nearly 100% that at least one would fail within a few hundred miles. They finally improved quality somewhat, and to lure people back started offering a 'lifetime' warranty.

I hope they go bankrupt: )
Very interesting Hobo. Never was aware of that. I became an Autolite fan back in my hot rod days in the 60's.
I did go to Champion one piece plugs in my Ford F150 though due to, at the time two piece FOMOCO plugs Ford was using it the 5.4.
 
While we are on this subject, I have a question. How does a spark plug go bad? There's no moving parts, Years ago the electrode would burn up and open the gap but now days I don't even see that. I have a chipper shredder that's at least 30 years old and a wood splitter that's got to be 25 years old and still running the original spark plug. Maybe we should be using B&S spark plugs:)
 
I've installed a lot of spark plugs and all different name brands, some don't seem to last as long as others but the only bad ones were the ones subject to human behavior.
 

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