spark plugs

Q&A regarding engines, turbos, and intercoolers and power upgrades

spark plugs

Postby st185rc » Sun Sep 16, 2007 9:22 pm

i have a friend who had an mr2 and suggested that i get copper spark plugs instead of iridium. what's a good spark plug to go with and plug wires? i'm probably going to get them changed during my next tune up.
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Postby etantshi » Sun Sep 16, 2007 9:24 pm

I've never had a problem running the bkr7e if that's what you're wondering. It's a copper plug.
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Postby st185rc » Sun Sep 16, 2007 9:43 pm

wow that was a fast reply! thanks. i've always been partial to ngk anyways, so that's good.
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Postby Corey » Sun Sep 16, 2007 10:58 pm

would you recommend the "7" NGK plug, or the hotter 6 plug for stock boost?

i have to change mine out soon too

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Postby smog7 » Sun Sep 16, 2007 11:04 pm

Corey Darling wrote:would you recommend the "7" NGK plug, or the hotter 6 plug for stock boost?

i have to change mine out soon too

Corey


I would just go with the 6 for stock boost. I have read that on stock boost used with 7+ series plugs mess shit up.
Last edited by smog7 on Mon Sep 17, 2007 12:11 am, edited 1 time in total.
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Postby etantshi » Mon Sep 17, 2007 12:09 am

I have never had a problem with the 7s fouling. However this is with 1 bar of boost. So to put it straight, if you're completely stock the bkr6e should be fine.
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Postby Matico40 » Mon Sep 17, 2007 12:14 am

Does anybody have more knowledge in this area, I have always been confused. From what I have heard, Iridium are much "better" than copper because the spark is so punctual and strong that it is hard to get a misfire, especially with high octane fuel. The only negative thing I heard is that they can break when you put them in and that of course, is very bad. But I don't know why copper would be better than iriduim. Anyone???
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Postby smog7 » Mon Sep 17, 2007 12:19 am

Matico40 wrote:Does anybody have more knowledge in this area, I have always been confused. From what I have heard, Iridium are much "better" than copper because the spark is so punctual and strong that it is hard to get a misfire, especially with high octane fuel. The only negative thing I heard is that they can break when you put them in and that of course, is very bad. But I don't know why copper would be better than iriduim. Anyone???


coppers are allllloooot cheaper then iriduims. But the coppers dont last as long.
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Postby toayoztan » Mon Sep 17, 2007 6:00 am

Matico40 wrote:Does anybody have more knowledge in this area, I have always been confused. From what I have heard, Iridium are much "better" than copper because the spark is so punctual and strong that it is hard to get a misfire, especially with high octane fuel. The only negative thing I heard is that they can break when you put them in and that of course, is very bad. But I don't know why copper would be better than iriduim. Anyone???


Actually i hear almost the opposite.

The iridiums last longer, however they don't give out as decent of spark and cost more.

The coppers don't last as long, but are cheaper and give a good spark.

Regardless of which gives out good or bad spark, the coppers are cheap and I don't mind replacing mine often (as i do it every other oil change).

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Postby Corey » Mon Sep 17, 2007 2:21 pm

I've been running on toyota's NGK Double Platnium plugs for 15000 km now, still seems to be running well. Im going to change them out soon for some NKG 6 coppers to see what kind of difference i get.

I try to change my oil every 8000Km as per the BGB. so thats 2 oil changes roughly before i should change out my plugs? will the coppers last that long?

Also, to remove the plugs, do i need a special socket? and the plug wires just pull straight off correct?

Thanks

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Postby gpmarzan » Mon Sep 17, 2007 4:35 pm

Corey Darling wrote:I try to change my oil every 8000Km as per the BGB. so thats 2 oil changes roughly before i should change out my plugs? will the coppers last that long?

corey


Depends how you drive your car. I drive mine relatively 'normal' meaning off of boost most of the time (gas saving :wink: ) and I change mine every other oil changes. Though sometimes it looks like the plugs can be used a bit more when I change them out, but I change them anyway because theyre cheap.
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Postby klue » Mon Sep 17, 2007 5:04 pm

i use the bkr7e plugs, there like 2 bucks each, and i change them every oil change. id say you could easily use them for 3-5,000 miles.

But i change my oil every 3,000 kms. they always look brand new with no signs of wear, or change in gap distance.

Ive used the iridiums, platinums, and coppers. The coppers i like.
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Postby darthripley » Mon Sep 17, 2007 5:38 pm

what does everyone gap the copper plugs to? factory specs in the BGB?
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Postby WarTowels » Mon Sep 17, 2007 9:53 pm

I've got some bkr7e's waiting to go in. I'm also wondering if they can be dropped in or if I need to gap them.

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Postby gpmarzan » Mon Sep 17, 2007 9:56 pm

WarTowels wrote:I've got some bkr7e's waiting to go in. I'm also wondering if they can be dropped in or if I need to gap them.

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you gap them
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