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Are these Spark Plugs ok???

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Old 05-23-2008, 03:51 AM
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Question Are these Spark Plugs ok???

Got a set of Trailing and leading Spark Plugs off Mazsport this week.
http://www.mazsport.net/store/index....duct_list&c=12

When I opened the box I was like ok this dont look right.
Last time I changed my plugs I got them from Mazda and the box's the spark plugs came in where white and had blue printing on the box's and told you where to install them on the Car.
These dont tell you where to install them on your car and the box's are yellow and have NGK in red
The tips of these spark plugs are also different from the ones I got at Mazda. These are cut with a X the spark plugs I got at Mazda had what looked like spikes facing the center of the plugs and thats what the ones I took out of the car looked like. Not like this.
These also have rings on them and have two rings on the Trailing plugs
Take a look at the pics and tell me what you think,


Well I know I can use them cus they screw right in like the OEM ones, but should I use them?
Are they a direct replacement for my OEM plugs? and will I have any problems with them?

Thanks,
-Gil
Old 05-23-2008, 03:59 AM
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Those are RX-7 plugs.
Most of us use them these days, if for no other reason than they are cheap ($4 - $7 a plug at NAPA).
The trailing need shims because they are too long for the Renesis.
Just remember to cut the wire tie off first!
Old 05-23-2008, 04:10 AM
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Angry

Ahhh F**K me, I could have went to AutoZone and got them for dirt cheep
Thanks Jeff...
Old 05-23-2008, 04:13 AM
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How long do you think they will last VS the OEM ones?
Old 05-23-2008, 11:26 AM
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Depends on how you drive.
If you don't foul them, they will go for a long time.
That said, I change mine 2 or 3 times a year at least.
Old 05-23-2008, 05:52 PM
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Dam it they are not going to last. I drive it like I stole it lol well guess they will do for now till I get a OEM set
Old 05-24-2008, 03:20 AM
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Originally Posted by DOMINION
Dam it they are not going to last. I drive it like I stole it lol well guess they will do for now till I get a OEM set
If you drive it like you stole it, the plugs will last for a long time.
Old 05-24-2008, 07:50 AM
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Yeah but I have to redline (Freeway redline) her everyday to clean out the carb build up lol
Old 10-06-2008, 06:32 PM
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Spark Plugs Rx7

Hi guys
i wanna get rx7 spark plugs and put in my 8
but i heard they re bigger so
How much longer r they?
what can i use as a spacer?
Thanks
Old 10-06-2008, 06:33 PM
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how about search or just read this thread more carefully ?
Old 10-07-2008, 01:50 PM
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The same exact thing happened to me. Mazsport's ebay site is very misleading. I had purchased two trailing "OEM" as advertised, but instead got these rx7. I emailed with a complaint, and all I got was someone saying that I don't know anything about rotaries and that they fit correctly blah blah blah.

That was not what I had complained about...

I was complaining about the false/misleading/insufficient advertising of the plugs...wow
Old 10-07-2008, 02:01 PM
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I would not use RX 7 plugs.

The performance is not there and they will foul unless you have a FI car.
Old 10-07-2008, 02:09 PM
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Originally Posted by Razz1
I would not use RX 7 plugs.

The performance is not there and they will foul unless you have a FI car.
Oh reary !
guess those other 8's in my rear view mirror were a mirage ........
Old 10-07-2008, 02:44 PM
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Originally Posted by italyhot21
Hi guys
i wanna get rx7 spark plugs and put in my 8
but i heard they re bigger so
How much longer r they?
what can i use as a spacer?
Thanks
i am sooo confused on this too...not only that can we use both leading and trailing from the rx7 on the 8?
Old 10-07-2008, 03:03 PM
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dozer: some FI guys use RX-7 plugs. Not really needed for an NA 8
Old 10-07-2008, 03:06 PM
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so then just forget about it...
Old 10-07-2008, 03:20 PM
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plus they're cheap. See MM's response (post #2)
Old 10-07-2008, 04:43 PM
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go to www.sparplugs.com

about $ 95 with shipping the Stealership wants anywhere from $170 to over $200
Old 10-07-2008, 05:21 PM
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Originally Posted by cornholio135
go to www.sparkplugs.com

about $ 95 with shipping the Stealership wants anywhere from $170 to over $200
I fixed your link, I'm assuming "sparplugs" was not the site you intended
Old 10-07-2008, 08:03 PM
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I use them for my turbo'd 8. You need all trailing ones if you are FI.
Old 10-07-2008, 08:44 PM
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I've used the RX7 plugs... but don't expect to get more than 15K miles out of them.
I started getting misfires and ended up just installing new OEM NGK (RX8) plugs.
Old 10-07-2008, 08:47 PM
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you get what you pay for...right?
Old 10-07-2008, 08:55 PM
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Originally Posted by 05rex8
you get what you pay for...right?
Absolutely!
Old 10-08-2008, 10:52 AM
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they can be used but they are not quite there for top performance on a na car. who have to use 2 washers on the trailing plug so the tip of the plug doesnt bottom out and on the lead plugs use no washers. AND when you do that you have to retighten them from time to time as they will vibrate loose!
OD
Old 10-08-2008, 01:13 PM
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^Absolutely!
And the two trailing plugs SHOULD come with the washers if purchased through MazSport... but its always good to verify!


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