spark plugs
#3
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slight difference in those numbers.
BUR7EQ and BUR9EQ or if platinum BUR7EQP and BUR9EQP.
the 9's have a blue stripe on the ceramic part.the 7's don't.
BUR7EQ and BUR9EQ or if platinum BUR7EQP and BUR9EQP.
the 9's have a blue stripe on the ceramic part.the 7's don't.
#17
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The ceramic insulator surrounding the center electrode is more deeply recessed on the trailing plug compared to the leading plugs. Another way to say the same thing...the exposed center electrode is longer on the trailing plugs.
#20
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#21
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Many believe as you do, others do not.
Let's not dismiss the world view of others by becoming inured to differing views.
Also, let's be a bit more expansive in our considerations.
We shall, to be generous, assume you've changed an even one hundred plugs.
During that time frame, NGK sold millions, if not billions, of spark plugs and you want us to assume that they are all the same exact size?
Have you accounted for differences in foreign markets?
What socket size for the UK, where everything is measured in "spanners" (and involves oxen, somehow*)?
*Citation needed.
#22
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Here is a break down of what the spark plug part numbers actually mean incase anybody is interested...
Specification part number breakdown: NGK BUR7EQ
B= 14mm Thread Diameter
U= Surface or Semi Surface Discharge Type R= Resistor Type Plug
7= Heat Rating
E= 19mm Thread reach
Q= 4-Ground Electrodes (Firing End Construction)
The higher the number on the heat rating, the colder the plug.
If the plugs are platinum, they would simply read a (P) after the (Q)
Specification part number breakdown: NGK BUR7EQ
B= 14mm Thread Diameter
U= Surface or Semi Surface Discharge Type R= Resistor Type Plug
7= Heat Rating
E= 19mm Thread reach
Q= 4-Ground Electrodes (Firing End Construction)
The higher the number on the heat rating, the colder the plug.
If the plugs are platinum, they would simply read a (P) after the (Q)
#23
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Well as being never left the U.S. i figured the rest of the world used milimeters. But stil should not be that complitcated to figure out with a conversion calculator when you have a starting point.
And yes there are many spark plug sizes but i have only ever seen those 2 in a rotary.
And yes there are many spark plug sizes but i have only ever seen those 2 in a rotary.