Didn't want this to get lost in the post below.
I spent a few years in a tuneup shop and have screwed in all kinds and seen all kinds.
Champion. Best plug in the world bar none. For an old Chrysler product.
Autolites went into most everything else with the exception of the foreign stuff.
The off shore Japanese buggies got NGK (No Good Kind, I used to joke)and Bosch worked great in the German stuff.
Deviation usually resulted in a fouled plug and a returning customer with a free fix. Champion plugs could be used in Ford and
GM with not much problem, IF, IF you went a temp range hotter. They tended to run cold and foul out except for the Chrysler stuff.
How many of you remember "Split Fire" spark plugs? They ran a split ground electrode. Twice the spark was the story to sell them.
They might have worked fairly well if you were running a multiple spark discharge system. Funny enough that instead of twice the spark,
they generally ran about 1/2 the spark and the wrong heat range on the plug. Only about $5.00 each back in the day.
People came in wondering about those plugs and we would take a normal plug and split the electrode with a pair of side cutters.
Show it to them and got them off the idea of the new "Wonder plug". Funny, those plugs are no longer around.
As for the best plug out there, it probably belongs to Bosch. Bosch came out a few years ago with a plug that has no grounding
electrode placed over the center. They ground that off and closed the distance between the center electrode and the side.
The entire edge around the center electrode has now become the ground. As the entire plug was open to the cylinder, you get a better burn,
more power and cleaner emissions. Faster time was demonstrated at a 1/4 mile track somewhat secretly and those plugs have never been put
into market.
Newer vehicles have come out with iridium plugs and what not. It doesn't take too long to figure out to put back in what came out
per the factory spec with newer engines.
All gas engines run on spark plugs!
Wanna bet? A few years ago, quite a few now, GM was experimenting with fiber optic.
Now if Bosch was to open the program with their plugs, install one set when new and drive it forever. Plugs would never wear out.
How's that look for the after market?
It's called "Planned Obsolescence"
Volvo, a few years ago, once again quite a few years ago, came out with a 3 cylinder diesel engine in a carbon fiber body, built three of
them, 100 MPG to a gallon of diesel and shelved the idea.
Not enough customer interest was the reported story.
You don't need 100 MPG.
Whoops. The wife is talking to me and I lost the rest of this.
Have fun with plugs and thinking about how much money is being made at the prices being paid.
I am running "No Good Kind" in her Mitsubishi Chrysler with "Autoslugs" in the '85 7.5 Ford. That truck, with dual tanks, pretty much
passes everything on the road except a gas station.
I spent a few years in a tuneup shop and have screwed in all kinds and seen all kinds.
Champion. Best plug in the world bar none. For an old Chrysler product.
Autolites went into most everything else with the exception of the foreign stuff.
The off shore Japanese buggies got NGK (No Good Kind, I used to joke)and Bosch worked great in the German stuff.
Deviation usually resulted in a fouled plug and a returning customer with a free fix. Champion plugs could be used in Ford and
GM with not much problem, IF, IF you went a temp range hotter. They tended to run cold and foul out except for the Chrysler stuff.
How many of you remember "Split Fire" spark plugs? They ran a split ground electrode. Twice the spark was the story to sell them.
They might have worked fairly well if you were running a multiple spark discharge system. Funny enough that instead of twice the spark,
they generally ran about 1/2 the spark and the wrong heat range on the plug. Only about $5.00 each back in the day.
People came in wondering about those plugs and we would take a normal plug and split the electrode with a pair of side cutters.
Show it to them and got them off the idea of the new "Wonder plug". Funny, those plugs are no longer around.
As for the best plug out there, it probably belongs to Bosch. Bosch came out a few years ago with a plug that has no grounding
electrode placed over the center. They ground that off and closed the distance between the center electrode and the side.
The entire edge around the center electrode has now become the ground. As the entire plug was open to the cylinder, you get a better burn,
more power and cleaner emissions. Faster time was demonstrated at a 1/4 mile track somewhat secretly and those plugs have never been put
into market.
Newer vehicles have come out with iridium plugs and what not. It doesn't take too long to figure out to put back in what came out
per the factory spec with newer engines.
All gas engines run on spark plugs!
Wanna bet? A few years ago, quite a few now, GM was experimenting with fiber optic.
Now if Bosch was to open the program with their plugs, install one set when new and drive it forever. Plugs would never wear out.
How's that look for the after market?
It's called "Planned Obsolescence"
Volvo, a few years ago, once again quite a few years ago, came out with a 3 cylinder diesel engine in a carbon fiber body, built three of
them, 100 MPG to a gallon of diesel and shelved the idea.
Not enough customer interest was the reported story.
You don't need 100 MPG.
Whoops. The wife is talking to me and I lost the rest of this.
Have fun with plugs and thinking about how much money is being made at the prices being paid.
I am running "No Good Kind" in her Mitsubishi Chrysler with "Autoslugs" in the '85 7.5 Ford. That truck, with dual tanks, pretty much
passes everything on the road except a gas station.