Are iridium plugs already installed in the 8?
08-28-2005, 12:09 PM
#2
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Originally Posted by Emperor
Should i replace the plugs on the 1st 1k servicing? And are iridium plugs already standard? Any recommendations?
Last edited by coupe07; 08-28-2005 at 02:28 PM.
08-28-2005, 12:19 PM
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Originally Posted by Emperor
Should i replace the plugs on the 1st 1k servicing? And are iridium plugs already standard? Any recommendations?
I believe they are iridium plugs in the car. I kept the original plugs on the car for 40K miles, and replaced according to the maintenance schedule. I had no issues with the plugs.
dag
08-29-2005, 06:54 AM
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Originally Posted by Emperor
i was wondering whether there are better ones when its time to replace them
they have the ones specially for rx8
these 2 look similar... but looking at the website... its different.. how different they are, i dunno
08-29-2005, 08:53 AM
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Originally Posted by sqflyer
Perhaps one is the leading and the other is the trailing plug?
08-29-2005, 11:18 AM
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Originally Posted by sqflyer
I oso not sure. The 1st one leading the 2nd one trailing lor :p
I think leading is the bottom plug and the trailing is the top plug... trailing fires 10 to 15 degrees after the leading plug fires... and I think it fires twice in the power stroke... waste something ... .....
Last edited by lohsk; 08-29-2005 at 11:33 AM.
08-29-2005, 09:56 PM
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Originally Posted by jetblast
wah beri chiem man 
i thought spark plug is a breed of small dogs, kinda like miniature bulldogs :p
i thought spark plug is a breed of small dogs, kinda like miniature bulldogs :p
:D :D :D
08-30-2005, 01:01 AM
#13
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Originally Posted by lohsk
Aiyaa say until like that... coupe07 ask what is the difference so that's the difference I guess.... It's not like flying a plane.
:D :D :D
:D :D :D
anyway ain't no rocket science to fly a plane :p
08-30-2005, 01:15 AM
#14
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Taka explains rotary spark plugs
I think I would write something here.
Stock plug
The stock spark plug across the globe is iridium from NGK.
Leading and trailing
Now there are 2 sets of plugs: A set of 2 leading and a set of 2 trailing.
As someone said before... leading plugs fire first and receive most of the bangs. So their heat tolerance is higher - therefore, their heat rating is NGK 9 or equal to no. thirty something in Denso scale anyhow... :p
The trailing plugs are the 2nd set and it is not as hot. Stock is NGK 7 ...
Denso racing plugs has a higher heat rating. it is for more extreme condition like on the race track or rev the car a lot. The heat rating equals to NGK10 leading and NGK 9 trailing.
Type of sparks
There are tge racing type that we have stock and as shown above. There is a tip which is hte anode and hte surrounding catode (or something like that). It is different from old style spark which has a cross on it.
New re type plugs last longer and less misfire
When to change?
Whatever Mazda said - half it.
Most FD owner change their plugs 8000km max.
I enourage you to search spark plugs picture that most of us has done.
These are mine after 23000km
https://www.rx8club.com/australia-new-zealand-forum-37/taka%92s-spark-plugs-after-23500-km-65551/
Any more questions? I ran out of things to say :D
Stock plug
The stock spark plug across the globe is iridium from NGK.
Leading and trailing
Now there are 2 sets of plugs: A set of 2 leading and a set of 2 trailing.
As someone said before... leading plugs fire first and receive most of the bangs. So their heat tolerance is higher - therefore, their heat rating is NGK 9 or equal to no. thirty something in Denso scale anyhow... :p
The trailing plugs are the 2nd set and it is not as hot. Stock is NGK 7 ...
Denso racing plugs has a higher heat rating. it is for more extreme condition like on the race track or rev the car a lot. The heat rating equals to NGK10 leading and NGK 9 trailing.
Type of sparks
There are tge racing type that we have stock and as shown above. There is a tip which is hte anode and hte surrounding catode (or something like that). It is different from old style spark which has a cross on it.
New re type plugs last longer and less misfire
When to change?
Whatever Mazda said - half it.
Most FD owner change their plugs 8000km max.
I enourage you to search spark plugs picture that most of us has done.
These are mine after 23000km
https://www.rx8club.com/australia-new-zealand-forum-37/taka%92s-spark-plugs-after-23500-km-65551/
Any more questions? I ran out of things to say :D
09-04-2005, 08:25 PM
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Originally Posted by Emperor
Should i replace the plugs on the 1st 1k servicing? And are iridium plugs already standard? Any recommendations?
Denso IRL01-31 IRT01-34 Cold plugs.
Don't bother with hot plugs. They'll "assist" marginally on consumption especially short city trips. But that's worthless in a high-revving car. :o
Which brings me to suggest one of those hypothetical bogus theories to go cold plugs and run on 95. Like I said, anyone can choose to discredit me freely on this, its just a hypothetical bogus theory.
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