Spark plugs.FAO GTSChris/JJ/Any1 else with big HP Mods

Posts about anything do to with modifying your car such as fitting aftermarket parts, bodykit, or tuning the engine for more performance.

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Owen @ Kent Car Craft
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Spark plugs.FAO GTSChris/JJ/Any1 else with big HP Mods

Post by Owen @ Kent Car Craft »

Just a quick referance peeps,what grade/type of plugs would you suggest for my mods when its built?
See profile::
michael
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Joined: Mon Dec 13, 2004 10:34 pm
Location: Yorkshire

Re: Spark plugs.FAO GTSChris/JJ/Any1 else with big HP Mods

Post by michael »

Coppers checked and changed on a regular basis, platinums checked and changed slightly less often or Iridium checked even less and changed if necessary.

Coppers will probably be good for 3000 > 6000 miles but will be able to do their job perfectly well.
MegatronUK

Re: Spark plugs.FAO GTSChris/JJ/Any1 else with big HP Mods

Post by MegatronUK »

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.
Owen @ Kent Car Craft
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Re: Spark plugs.FAO GTSChris/JJ/Any1 else with big HP Mods

Post by Owen @ Kent Car Craft »

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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MegatronUK

Re: Spark plugs.FAO GTSChris/JJ/Any1 else with big HP Mods

Post by MegatronUK »

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).
michael
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Location: Yorkshire

Re: Spark plugs.FAO GTSChris/JJ/Any1 else with big HP Mods

Post by michael »

Yeah 7's should be OK
ryan_s3
Posts: 100
Joined: Thu Dec 30, 2004 7:33 pm

Re: Spark plugs.FAO GTSChris/JJ/Any1 else with big HP Mods

Post by ryan_s3 »

i notice that some tuners recommend iridium plugs,although this was on a nissan 200sx .I always thought they were a gimmick?
MegatronUK

Re: Spark plugs.FAO GTSChris/JJ/Any1 else with big HP Mods

Post by MegatronUK »

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.

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.
michael
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Location: Yorkshire

Re: Spark plugs.FAO GTSChris/JJ/Any1 else with big HP Mods

Post by michael »

I use Iridiums but mainly because I'm lazy :)
Lee @ 3S Service Centre
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Joined: Tue Dec 14, 2004 12:38 pm
Location: around

Re: Spark plugs.FAO GTSChris/JJ/Any1 else with big HP Mods

Post by Lee @ 3S Service Centre »

the 3sgte doesnt like iridiums.

They have a tendancy to shatter inside your cylinder.

there is a big post on the us forum about them.

i belive even JJ has had this problem.

lee
paul_h
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Location: Hartlepool

Re: Spark plugs.FAO GTSChris/JJ/Any1 else with big HP Mods

Post by paul_h »

I use cold grade platinums

number bkr7evx and have never had a problem with them.

I tried the coppers but on my engine they didnt seem to like the high boost.


paul
Hedgehog Dodger
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Joined: Thu Dec 16, 2004 4:55 pm
Location: Manchester

Re: Spark plugs.FAO GTSChris/JJ/Any1 else with big HP Mods

Post by Hedgehog Dodger »

hornsey wrote:I use cold grade platinums


Same here :wink:
gtschris.com
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Re: Spark plugs.FAO GTSChris/JJ/Any1 else with big HP Mods

Post by gtschris.com »

Elmo Owen wrote:Just a quick referance peeps,what grade/type of plugs would you suggest for my mods when its built?
See profile::


I run 1 grade colder NGK copper v-groove plug (same as i sell on my website), if people and having issues with these plugs i would recommeding checking the gap to 0.71mm (0.028") as they don't come pregapped as many platnium do.

Copper conducts better then platnium (all though platniums do last alot lot longer).

Iridiums, jury is still out on acutal benifits vs the bore scroring problems i have heard of; i am not risking it :)
www.gtschris.com
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