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|Center Electrode Core Material:||Copper Core|
|Center Electrode Tip Material:||Nickel|
|Electrode Core Material:||nickel|
|Electrode Tip Material:||nickel|
|Gap Size:||0.056 in|
|Ground Configuration:||Surface Discharge|
|Ground Electrode Core Material:||Nickel Core|
|Ground Electrode Tip Design:||Surface Discharge Type|
|Hex Size:||13/16 in|
|Manufacturer Heat Range:||12|
|Shorty Spark Plug:||No|
|Spark Plug Approximate Resistor Value:||5K Ohm|
|Thread Diameter:||14 mm|
|Wrench Diameter:||13/16 in|
REVIEW SNAPSHOT®by PowerReviews
Reviewed by 1 customer
Displaying review 1
Comments about NGK Nickel Spark Plug (BUR9EQ):
While this picture adds no merit, what-so-ever (since the part number is for the NGK plugs found in a 13B) you should be VERY CAREFUL when picking up a set of plugs! Plugs that have that little 'electrode' doo-hickey, on the bottom are NOT designed for a rotary engine!
The RX7 plugs are FLAT-FACED, *NOT* pronged!
Given that, here's my thought on the NGK BUR9EQ and BUR7EQ plugs:
They're great! The difference is the heat-range, dictated by the '7' or '9,' with the latter being a better plug for running more boost or such.
While I feel that nearly 7 bucks is a little up there for a plug, they're definitely worth the cost, as they last QUITE a while, under the assumption your CAS and A/F isn't so rich it'll smog out some third-world countries.
All-in-all, these plugs are great and I recommend running the '9s' unless you're running more than about 400hp.