Ever seen these plugs before?
12-08-03, 05:04 PM
#3
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those are the nippondenso plugs, they look like the ngks except without the cross shaped cut outs
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12-08-03, 05:32 PM
#10
Haven't we ALL heard this
http://www.wankel.net/rx7-fb-1999/msg03375.html
Last paragraph
Coil voltage was again raised in 1986 models. Gap jumped to .080" with
the first Mazda specified surface gap plugs, SD10A and SD11A. These
proved less than ideal for long term reliability. Other variations were
tried until Mazda and NGK settled on the currently recommended BUR type
pseudo surface gap plugs. Visit http://www.mazdatrix.com/ign-2.htm for
more.
Last paragraph
Coil voltage was again raised in 1986 models. Gap jumped to .080" with
the first Mazda specified surface gap plugs, SD10A and SD11A. These
proved less than ideal for long term reliability. Other variations were
tried until Mazda and NGK settled on the currently recommended BUR type
pseudo surface gap plugs. Visit http://www.mazdatrix.com/ign-2.htm for
more.
12-08-03, 05:33 PM
#11
Haven't we ALL heard this
Found this too
http://home.iprimus.com.au/bradr/engine.htm
Plugs and Leads - Get some new plugs and leads, don't use the ones that come with the engine just so you know they work...The standard plugs used in the turbo engine are NGK SD10A and SD11A they are bloody expensive about AUS$30 each, and from my experience don't work very well and they foul really easily, too cold maybe. Mazda stopped using them because the ceramic around the electrode cracked and fell apart into the combustion chamber, so not good, don't use them
http://home.iprimus.com.au/bradr/engine.htm
Plugs and Leads - Get some new plugs and leads, don't use the ones that come with the engine just so you know they work...The standard plugs used in the turbo engine are NGK SD10A and SD11A they are bloody expensive about AUS$30 each, and from my experience don't work very well and they foul really easily, too cold maybe. Mazda stopped using them because the ceramic around the electrode cracked and fell apart into the combustion chamber, so not good, don't use them
12-08-03, 05:37 PM
#14
They were original equipment in my '88TII. Mazda (NGK) had a problem with the trailing plugs firing in the early designs. Mine would last maybe 200/300 miles and they would cease firing. They even got a set of the '89/'91 plugs (7&9) and had them shipped over here for me to try way before the '89's hit the market. They didn't work either, so Mazda bought the car back and that's how I got my '89TII with the redesigned houisings.
12-08-03, 05:37 PM
#15
What R U thinking self?
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Originally posted by J-Rat
Got them on an EBAY bid a while ago. Always wondered if they were worth anything.
Got them on an EBAY bid a while ago. Always wondered if they were worth anything.
12-08-03, 05:41 PM
#16
Pretty much yea, they werent very expensive, and they make a nice display item. I had no intention of installing them, they were more of a "gee whiz" impulse buy. I have found out that they are the original plugs, discontinued a while ago. No longer available. Probably not worth a whole lot.
12-08-03, 06:10 PM
#19
Haven't we ALL heard this
Originally posted by Turbonut
They were original equipment in my '88TII. Mazda (NGK) had a problem with the trailing plugs firing in the early designs. Mine would last maybe 200/300 miles and they would cease firing. They even got a set of the '89/'91 plugs (7&9) and had them shipped over here for me to try way before the '89's hit the market. They didn't work either, so Mazda bought the car back and that's how I got my '89TII with the redesigned houisings.
They were original equipment in my '88TII. Mazda (NGK) had a problem with the trailing plugs firing in the early designs. Mine would last maybe 200/300 miles and they would cease firing. They even got a set of the '89/'91 plugs (7&9) and had them shipped over here for me to try way before the '89's hit the market. They didn't work either, so Mazda bought the car back and that's how I got my '89TII with the redesigned houisings.
James
12-08-03, 06:26 PM
#20
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they are not rare around here
**** I can go to my local mazda dealership and pay about 7.99 a plug and pick up a set
they are an easy find just a standard dealership item
**** I can go to my local mazda dealership and pay about 7.99 a plug and pick up a set
they are an easy find just a standard dealership item
12-11-03, 07:20 PM
#24
Former Moderator. RIP Icemark.
Originally posted by J-Rat
Ask, and ye shall recieve.
Ask, and ye shall recieve.
The only thing that suggests that they are for the FC is the N333/ N334 number
Last edited by Icemark; 12-11-03 at 07:23 PM.
12-12-03, 03:14 PM
#25
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They look like Densos...I got Densos last year sine my supplier was out of stock on NGK's for the 13B at the time I was doing my annual tune up...Denso's worked just fine, still have 'em in 
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