Just a quick referance peeps,what grade/type of plugs would you suggest for my mods when its built?
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Spark plugs.FAO GTSChris/JJ/Any1 else with big HP Mods
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Re: Spark plugs.FAO GTSChris/JJ/Any1 else with big HP Mods
Coppers checked and changed on a regular basis, platinums checked and changed slightly less often or Iridium checked even less and changed if necessary.![](./images/smilies/spacer.gif)
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Coppers will probably be good for 3000
> 6000 miles but will be able to do their job perfectly well.![](./images/smilies/spacer.gif)
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Coppers will probably be good for 3000
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Re: Spark plugs.FAO GTSChris/JJ/Any1 else with big HP Mods
Agree.
I use NGK 7E's in the Supra; they work perfectly well.
They're cheap enough to replace every service, as compared to these fancy iridium things.![](./images/smilies/spacer.gif)
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Re: Spark plugs.FAO GTSChris/JJ/Any1 else with big HP Mods
I'm kinda looking for the temperature grade,so the combustion/spark temps need to be low.Maybe grade 7's,anyone else agree?
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Re: Spark plugs.FAO GTSChris/JJ/Any1 else with big HP Mods
7's would be a good, sensible starting point for a modified engine.
It's what I've always used in my modified cars
(if they were specced as a
'6' as standard).![](./images/smilies/spacer.gif)
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Re: Spark plugs.FAO GTSChris/JJ/Any1 else with big HP Mods
i notice that some tuners recommend iridium plugs,although this was on a nissan 200sx
.I always thought they were a gimmick?
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Re: Spark plugs.FAO GTSChris/JJ/Any1 else with big HP Mods
They supposedly last longer and produce a better spark during their lifetime
- a bit like platinum tipped jobs and those wierd 4 pronged Bosch plugs you get in some Audi's.
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Plain old copper NGK's work well and are cheap
(cost me less than 25 quid for a set for the Supra), so I don't really see the point in them, to be honest.![](./images/smilies/spacer.gif)
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Plain old copper NGK's work well and are cheap
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Re: Spark plugs.FAO GTSChris/JJ/Any1 else with big HP Mods
I use Iridiums but mainly because I'm lazy ![Smile :)](./images/smilies/icon_smile.gif)
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Re: Spark plugs.FAO GTSChris/JJ/Any1 else with big HP Mods
the 3sgte doesnt like iridiums.![](./images/smilies/spacer.gif)
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They have a tendancy to shatter inside your cylinder.![](./images/smilies/spacer.gif)
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there is a big post on the us forum about them.![](./images/smilies/spacer.gif)
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i belive even JJ has had this problem.![](./images/smilies/spacer.gif)
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lee
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They have a tendancy to shatter inside your cylinder.
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there is a big post on the us forum about them.
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i belive even JJ has had this problem.
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lee
Re: Spark plugs.FAO GTSChris/JJ/Any1 else with big HP Mods
I use cold grade platinums
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number bkr7evx and have never had a problem with them.
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I tried the coppers but on my engine they didnt seem to like the high boost.![](./images/smilies/spacer.gif)
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paul
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number bkr7evx and have never had a problem with them.
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I tried the coppers but on my engine they didnt seem to like the high boost.
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paul
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Re: Spark plugs.FAO GTSChris/JJ/Any1 else with big HP Mods
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hornsey wrote:I use cold grade platinums
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Same here
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Re: Spark plugs.FAO GTSChris/JJ/Any1 else with big HP Mods
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Elmo Owen wrote:Just a quick referance peeps,what grade/type of plugs would you suggest for my mods when its built?
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I run 1 grade colder NGK copper v-groove plug
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Copper conducts better then platnium
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Iridiums, jury is still out on acutal benifits vs the bore scroring problems i have heard of; i am not risking it
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