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First things first, i tired the search function but it SUCKS and is hardly worth using.

anyway, my 100k service is coming up and i need to get myself some spark plugs, im buying all the parts myself and getting someone to fit them.

I know that NGK make good plugs but which ones to use?

irridium? platinum?

i know theyre expensive but im willing to pay good money for a good product.

are there any other decent brands i should look at?

also, does anyone know of any sites where i can order these online?

the car is a 96 R33 Gt-st.

cheers

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just go with coppers. you have to change them more often but they work out cheaper in the long run. i had iridiums in my car and they were stuffed after 20,000km. so thats $120 for 20,000ks, or $24 for 10,000ks. my mechanic uses them in his sr20.

the part number is something like BCPR6ES. not 100% sure but i know they are heat range 6.

Edited by mad082
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Hi Guys,

Going to buy some sparkies for my 33 GTST this weekend. Mad082 posted the part numbers BCPR6ES but why is it when you go to the NGK site, if you choose RB25DET the part number PFR5G-11 comes up? Any ideas?

I'm just a lil confused on which ones i should get. Also I assume i would have to gap these plugs?

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don't bother typing in rb25det or anything like that. the plug that it brought up are a hotter plug, and gapped larger (easy to fix though).

the copper plugs will handle the power fine. they spark just as well as iridiums. you may just need to gap them a bit smaller than 0.8mm for 18psi. and you may possibly want to go to a heat range of 7.

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Hi Guys,

I bought myself a set of BCPR6ES but i remember reading somewhere that they should be the BCPR6ES-11.

The only difference i believe is that the BCPR6ES has a standard gap whereas the BCPR6ES-11 had a gap of 1.1mm.

I measured the gap of the BCPR6ES using a feeler gauge and it was 0.8mm (which is what ideally would like the gap to be anyway).

So I assume the BCPR6ES is what most people are using not the BCPR6ES-11, that's if they are using just the standard copper plugs rather than the iridiums. Am I correct?

Please correct me if i'm wrong as i will be putting in my plugs today. thanks

Edited by Scooby_Steve
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1.1 is fine if you are only running stock boost. the problem is that once you wind the boost up the extra air can blow the spark out. but reducing the gap you reduce the chance of the spark being blown out.

i think the reason why they don't want you to regap iridiums is incase you damage the tip.

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