Best spark plugs for 7AFE Options

[conus00]

As title says: what are the best spark plugs for stock 7AFE?

[Hanyo]

There's no such thing as "pre-gapped".

Spark plugs are "pre-gapped". If you buy the right ones they will be gaped to the specs of your car, however they tend to change gap as they get bumped around in shipping. Therefore you have to gap them. If you look under the spark plug reference chart they list the gap for your spark plugs.

http://www.ngksparkplugs.com/part_finder/c...suv/results.asp

Additionally some denso spark plugs can not be gapped.
those are the oem spark plugs for some Toyota's, not the bs +4 bosch spark plugs.
here is another example if spark plugs that can not be gapped:

iridium plugs are pre gapped, you dont put feeler gauges in there to check because you take a chance of damaging the tip.

iridium plugs need to be gap also. But 99% of the "shade tree mechanics" don't know how to gap them. Therefore many part stores market them as "pre-gaped" to save people from the head aches of damaged spark plugs.



people use ramped spark plug gap tools to open the gap on the spark plugs which is the wrong way to do it. Every time you gap each plug you end up cutting into gapper tool which changes the reading. The ramp gapper tool is a measuring device and not a tool used to open up the gap.





Its like using a ruler as a knife and then complaining that you no longer can trace straight lines. That is why the wire gaper tool is recommended because it reduces the human error factor.

The right way to gap spark plugs is to use pliers. specifially these:





With all this technical jargon out of the way, what would i recommend? Well first things first always check the gap of your spark plugs. Your goal is for all of them to be the same gap around .030 in. If you notice one is gapped smaller then the rest exchange them with your parts store. Do not worry too much about the gap, as this changes as they wear out. They will open up was they the electroid wears or close down as they collect carbon. If your super anal you can adjust them but 90% of the time you will not notice a difference. That is why those crazy bs bosch +4 spark plugs can work in any car.