Quote:
AltimatSE-R wrote-
are the bosch platinums really that shitty compared to the ngk
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My understanding is that the bosch has two problems for the SR20.
One- the electrode is kind of shrouded and wears down, causing the electrode to be kind of recessed. This makes it more difficult for the spark to jump between the proper points.
Two- The end of the bosch plug doesn't end up in the same location as the NGK plug inside the cylinder. Apparently the SR20 is picky about were the spark originates in the cylinder. Too high or low in the chamber and combustion is not optimum.
Of course this is a sore subject for some people. There was even a spark plug dyno shoot out. Both sides maintain their positions as far as I know.
I'm sure if I'm wrong, someone will speak up.