Spark plugs for 3SGTE, which one is the best? Options

[Red123]

Hello guys.
What spark plugs should I use for 3sgte? Which one is the best?
Currently using NGK Iridium Spark Plug Grade 7, bought from fensport and I'm not very satisfied with them.
http://www.fensport.co.uk/Parts/Model_19/Category_1/1300

Thanks.

[JozhGoober]

If it's bone stock the BKR6E's are the OEM spec. If you've increased the boost, get the BKR7E's (and gap a little tighter). They're copper plugs, so they don't last too long compared to platinum or iridiums, I would replace mine whenever I changed the oil (~5k miles). On the plus side, they're much cheaper than platinum or iridium plugs!

From the 3S-GTE power primer http://www.mrcontrols.com/primers/power.htm :

To help keep the cylinders cooler under high boost and insure that the stock ignition keeps the spark going strong, you should replace the stock plugs with a set of NGK 6097 copper spark plugs. These are one step colder than the stock plugs to help keep detonation in check. You should gap them at 0.028", which is a little less than stock to make it a little bit easier on the ignition system to keep the spark going strong and reliably even under higher boost pressure. These will need to be replaced every 5K miles or so. Note that you do not need to make any other changes to the stock ignition system until you reach a higher power point. It is a myth that you can make more power with aftermarket ignition components on the 3S-GTE. All that the ignition can do is lose power if it is weak or not properly functioning. The stock ignition and components, except for the spark plugs is adequate to 17-18psi in good working condition.

Note: NGK 6097 == BKR7E

This post has been edited by JozhGoober: Nov 30, 2012 - 10:23 AM