Spark Plug Question
I've always used NGK BR9EQ-14 spark plugs and it looks like I can still get them through RockAuto. All the auto parts stores only show the NGK BUR9EQ for our cars.
Has anyone used the NGK BUR9EQ? What is the difference? |
I think the U means surface discharge. Probably work fine, these are used in FC and FD normally.
I have the rx8 plugs in my leading and they work great. |
When I looked it up it seems to be one of the optional RX-8 plugs.
It seems like the RX-8 guys use either the BUR7EQ or BUR9EQ. |
You are advised to have a direct fire ignition system is order to use surface discharge plugs.
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Good to know, thanks.
I will just stick with the stock plugs since I have no plans to go direct fire. I've always used the BR9EQ-14 but it looks like RB and Mazdatrix say to use the BR8EQ-14. Should I try and find the BR8EQ-14 or stick with the easier to get BR9EQ-14? |
Stick with 9. You are the owner of your car, not them.
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Originally Posted by Jeff20B
(Post 12047538)
You are advised to have a direct fire ignition system is order to use surface discharge plugs.
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Thanks All
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Originally Posted by RX-7 Chris
(Post 12047519)
When I looked it up it seems to be one of the optional RX-8 plugs.
It seems like the RX-8 guys use either the BUR7EQ or BUR9EQ. the BU/BP/RC, etc refer to the plug design, there are a TON, but basically every car on the planet that isn't rotary takes a BP. the R is for resistor, no R = no resistor the number is the heat range, 9 is colder than 7. you want the stock heat range, unless you're modded or step on the gas a lot, then you want a colder one. not sure about the EQ if there is then a P or I its platinum, or iridium, if its blank its copper. so a BUR7EQ is a copper, 7 heat range resistor surface discharge plug, it happens to fit the FC, the FD is a BUR7EQP. the Rx8 uses an RC7 something something, and its much much better. it is a fine wire iridium plug, based on the race plug design. it is less shrouded than the other plugs, and it misfires less, AND it takes less ignition power to fire |
Originally Posted by j9fd3s
(Post 12047687)
the Rx8 uses an RC7 something something, and its much much better. it is a fine wire iridium plug, based on the race plug design. it is less shrouded than the other plugs, and it misfires less, AND it takes less ignition power to fire
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Has anyone tried to use the RX-8 plugs without direct fire? I know it would be an expensive experiment.
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Originally Posted by RX-7 Chris
(Post 12047864)
Has anyone tried to use the RX-8 plugs without direct fire? I know it would be an expensive experiment.
of them. Only one way to tell though. |
Now you guys have me interested in RX-8 plugs. I might try a set on my leading.
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Originally Posted by Jeff20B
(Post 12047873)
Now you guys have me interested in RX-8 plugs. I might try a set on my leading.
if they last then its worth it. |
I usually replace my plugs every 6 months max. If the RX-8 plugs would give me 1+ years, I think it would be worth it.
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Yeah, with DLIDFIS, that is twice the number of sparks for the same mileage the plugs were originally developed for, thus my leading plugs wear kinda fast. I use BR8EQ-14
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Originally Posted by t_g_farrell
(Post 12047869)
I'm not sure the stock ignition setup would have enough power to get a good spark out
of them. Only one way to tell though.
Originally Posted by RX-7 Chris
(Post 12047882)
I usually replace my plugs every 6 months max. If the RX-8 plugs would give me 1+ years, I think it would be worth it.
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I'm going to have to try them.
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I'm going to try the 8 heat range RX-8 plugs with boost. They are hard to find in this country though. And expensive!
j9fd3s said, "n3z1-18-110a is the Mazda number, NGK calls it a RE8C-L" |
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