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Spark plugs
- Thread starter jyatesmp
- Start date
The autolite 85 (an extended tip plug) has been recommended here a number of times.
The "parts books" in stores list autolite 303 - a normal tip plug.
Michael mayben has a post describing the difference. Unless you are "real old", you May not have heard of the terms, but those were the "standard" plugs for our vintage vehicles.
I am using ac r43s (extended tip) in my 392 (second set).
Imo, "hi-tech" spark plugs are a "waste of money" used in "low-tech" IH engines.
The "parts books" in stores list autolite 303 - a normal tip plug.
Michael mayben has a post describing the difference. Unless you are "real old", you May not have heard of the terms, but those were the "standard" plugs for our vintage vehicles.
I am using ac r43s (extended tip) in my 392 (second set).
Imo, "hi-tech" spark plugs are a "waste of money" used in "low-tech" IH engines.
Eric VanBuren
Member
The standard tip plug is sometimes referred to as a heavy duty truck plug since those were the last applications that had those from the factory, however the sii will never see the loads that can cause the extended tip design to cause pre-ignition so getting the spark closer to the center of the combustion chamber like the extended tip design does is a good idea.
Unless you like to change your plugs very frequently and have a lot of extra cash burning a hole in your pocket I would stay away from the e3. It's design will concentrate the spark on only a couple of small areas causing them to wear out quickly.
The splitfire was an earlier version of a supposed "high tech" side electrode design similar to the e3. They were quite good for a parts store's profit. I was working at a parts store part time when they came out. The sold like hotcakes for a few months within a few thousand miles they resulted in the sale of plug wires, caps, rotors, ignition control modules, coils, carb rebuild kits, ect as the guy was chasing the miss-fire all over the place. "it couldn't be the plugs they are only x,000 miles old and they are the latest and greatest" after throwing lots of good money after bad what finally cured their problem was a new set of ordinary everyday spark plugs like autolites or ac.
If any of these supposed "high tech" spark plug designs actually improved gas mileage, hp and didn't have any draw backs don't you think that the automakers would be all over them and use those designs from the factory?
Save your $$ and a lot of frustration and use autolites or ac.
Unless you like to change your plugs very frequently and have a lot of extra cash burning a hole in your pocket I would stay away from the e3. It's design will concentrate the spark on only a couple of small areas causing them to wear out quickly.
The splitfire was an earlier version of a supposed "high tech" side electrode design similar to the e3. They were quite good for a parts store's profit. I was working at a parts store part time when they came out. The sold like hotcakes for a few months within a few thousand miles they resulted in the sale of plug wires, caps, rotors, ignition control modules, coils, carb rebuild kits, ect as the guy was chasing the miss-fire all over the place. "it couldn't be the plugs they are only x,000 miles old and they are the latest and greatest" after throwing lots of good money after bad what finally cured their problem was a new set of ordinary everyday spark plugs like autolites or ac.
If any of these supposed "high tech" spark plug designs actually improved gas mileage, hp and didn't have any draw backs don't you think that the automakers would be all over them and use those designs from the factory?
Save your $$ and a lot of frustration and use autolites or ac.