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Old 08-07-2012, 03:42 PM   #31
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gapping plugs down looses power, wider gap = better burn. If your having to gap your plugs down to very small ammounts, you need to upgrade.
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Old 08-07-2012, 03:54 PM   #32
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NGK iridium plugs and bosch wires because i didnt want to wait for ngk wires to come in

stock ka24de
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Old 08-07-2012, 07:29 PM   #33
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Wider gaps do not make a big difference in power, but burn more efficient which helps with idle, cruise and start up. It is the cylinder pressure (causes blowout) that decides if you need to close your gap so the spark can jump. I am running LS2 coils and could probably open up to .044 since they burn hot as hell. I get a blue spark from these bad boys.

Spark Plug Installation Instructions
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Old 08-08-2012, 04:38 PM   #34
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I run an NGK BKR8EIX gapped to .020

On an SR with a 3076r turbo making 477hp. works perfectly for me and i don't have to replace my plugs every other week as i would with copper ones.
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Old 09-15-2012, 03:28 AM   #35
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So much to learn. Im about to finish my build and was wondering what sparkplugs to get. Running built sr and gt3071 ( if it matters) 740 nismo inj. With a goal of +450. What kind of. Spark plug will work for me??
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Old 09-15-2012, 03:31 AM   #36
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NGK Bkr7e coppers gapped at.26
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Old 09-15-2012, 03:32 AM   #37
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Quote:
Originally Posted by turbociv910 View Post
gapping plugs down looses power, wider gap = better burn. If your having to gap your plugs down to very small ammounts, you need to upgrade.
Not true, My dad ran .22 gap on his Evo 8 with buschar coilpacks which has plenty of spark
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Old 09-15-2012, 04:22 AM   #38
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if i get brk6e for mostly stock sr , do i need to regap or is it just plug and play?
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Old 09-15-2012, 10:24 AM   #39
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Quote:
Originally Posted by OuTLaVvZ View Post
if i get brk6e for mostly stock sr , do i need to regap or is it just plug and play?

I have never bought spark plugs that didn't need to be properly gapped.
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Old 09-15-2012, 01:10 PM   #40
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NGK v-groove side gapped
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Old 09-15-2012, 03:06 PM   #41
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Bkr5e 11 NGK coppers on my n/a ka24de per the FSM. I just change them often about every 10k miles never had any issues.
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Old 09-15-2012, 03:19 PM   #42
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bkr7e enough said

2 dollars a plug and im making over 450 hp thank you
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Old 09-15-2012, 03:24 PM   #43
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sr20det that is
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Old 09-15-2012, 03:24 PM   #44
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Quote:
Originally Posted by turbociv910 View Post
Engines get better gas mileage and less emissions the hotter they are, that is why most cars have an operating temp of 200-220. Some iron blocks are 230!. Iridium increases heat increasing fuel mileage. Hotter everything is, the air the engine is consuming is less dense(= less fuel). Just like when its cold you expect more power right?

Copper runs cooler, has colder spark(naturally) to reduce detonation for higher horsepower and aftermarket applications. Many, countless times have i taken out iridium plugs in exchange for copper and gained power, or got rid of a miss fire.

never buy "iridium racing" plugs for your car, you will waste the $$ and i will say i told you so.

downside is that a copper plug wears out twice as fast, but who cares when they cost $3 a piece.
I'm sorry but I have correct this since you're wrong in so many ways.

The electrode which can be made of copper, iridium, platinum, etc does not effect the temperature inside the cylinder. The amount of insulation under the white ceramic shell on the spark plug determines the temperature of the spark plug (Heat Range can be a Hotter/Colder Spark plug). Thats why higher hp motors usually have one step or two step colder spark plugs. Different electrodes only determine longetivity of the spark plug. Top fuel drag cars use basic copper spark plugs that many of you use.

There's no such thing as a stronger/weaker/colder/hotter "spark". A spark is a spark and nothing else. What determines performance is the gap. Gap should be determined based on the engines OEM specifications or secondary ignition system output if aftermarket.

Also spark plugs (If using the correct ones) can NEVER cause detonation. The only way you can is if you use the incorrect spark plug that is a hotter heat rang or has a longer reach which will increase the compression (That is if it doesn't hit the top of the piston). I think the word that you're looking for is "misfire". Can be caused by usually incorrect gap. Spark plugs come already gapped to OEM specs but I always double check.

WARNING: IRIDIUM SPARK PLUGS SHOULD NOT BR GAPPED. THE ELECTRODE WILL GET DAMAGED!
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Old 10-03-2012, 11:40 PM   #45
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so...

NGK BKR8EIX

OR

BKR7EIX

???
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Old 10-04-2012, 12:05 AM   #46
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Quote:
Originally Posted by jamg View Post
so...

NGK BKR8EIX

OR

BKR7EIX

???
That obviously depends on how much power you're making. I believe its one step colder for every 100hp up. 6 is stock.
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Old 10-04-2012, 12:06 AM   #47
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bkr7eix, i believe their pregapped .35 last time i checked myself lol
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OCD isn't so bad just means you'll spend more money then most people, but you'll have a quality car not a POS put together with POS parts.
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Old 10-04-2012, 12:08 AM   #48
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That obviously depends on how much power you're making. I believe its one step colder for every 100hp up. 6 is stock.
300whp

colder, as in going down in numbers?
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Old 10-04-2012, 12:08 AM   #49
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Just got a set of bkr8 for my build. Shooting for 450-475hp
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Old 10-04-2012, 10:08 AM   #50
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Just wanted to chime in to say that NGK says to not use anti-seize on their plugs.
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Old 10-04-2012, 05:08 PM   #51
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i use ngk or autolite ir ..i like them better than denso
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Old 10-25-2012, 03:24 PM   #52
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Quote:
Originally Posted by AdamR View Post
Just wanted to chime in to say that NGK says to not use anti-seize on their plugs.
+1 http://www.ngksparkplugs.com/pdf/TB-...1antisieze.pdf
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Old 10-25-2012, 03:58 PM   #53
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A/C Delco. At $1 a piece you can't beat it. I change plugs like I change socks anymore.
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Old 10-25-2012, 04:15 PM   #54
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I never knew that about the anti seize. OH WELL
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Old 10-25-2012, 04:49 PM   #55
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currently running bkr7e in my red top SR w/splitfire coilpacks, 425whp

should I change/stay the same, and suggestions on my gap setting?
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Old 01-13-2013, 08:08 PM   #56
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Just to share some opinion and personal experiences with spark plugs, I think HKS Iridiums are the best spark plugs out there for turbo cars. I know many will chime in here and flame me saying otherwise. I am not saying that NGK Iridiums are not good (That's what I currently have in my S13 and I am not complaining) but yes, I have had experience with HKS Iridiums and they are just the BEST hands down. If you really look at the design of the HKS plugs, you will see that you get less vibration so the gaps don't change. Many will scratch your heads, but some people know what I am talking about. Just look at the HKS spark plugs and the NGK/Denso (whathaveyou) and you will see that the HKS spark plugs have a shorter electrode that is much more resistant to vibration. The insulation is much different and well, I don't have any pictures to back up my opinion at the moment, but I will take some pictures and post them up so people can see and understand where I'm coming from. It is also designed to take high boost. I'm sure the problem that many of you have with ignition/misfire/detonation is in regards to running a hotter plug then necessary for your application, but I will guarantee any of you, get the HKS plugs and you will never look back.
I have not had experience running the plugs in an S-chassis. However, I have had experience in a couple Supra's and IS300 with a VVTi 2JZGTE and the plugs make a world of difference compared to the Denso plugs or even the NGKs. The performance of the car is just amazing and smooth throughout the power band and does not sputter or "give out" at higher RPM's or under higher boost levels.
I will post picture and specifics of the HKS spark plugs. I should have a couple laying around the shop. The difference with running HKS plugs and NGK is instantly noticeable. Now I can't say that you will get 20whp just by upgrading to HKS nor am I a rep for HKS by any means. I am just stating my opinion and experience with this particular spark plug.
Many people don't want to "waste" $20/per plug for the HKS units, but I think it's a great investment. Especially when you are putting so much money into the motor, turbos, manifolds, front mounts etc. I think the $80 for a set of HKS plugs is well worth the outcome. Yes I will be getting these plugs in the near future and I am not telling everyone to go ahead and buy these. But I do believe in all of HKS products and think that these plugs are the absolute best for Boosted motors.
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Old 01-13-2013, 08:28 PM   #57
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HKS sparkplugs are just rebranded NGK Iridiums.
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Old 01-13-2013, 08:30 PM   #58
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I use NGK V-powers on my L28E with a Turbo slapped on it, shooting at 10PSI gapped to .032 and I love it everyday. Not sure why I gapped it so low, but it does feel a bit nicer in boost now that I did. Stock gap is .044 but I remember some of the plugs not being gapped there, so I was thinking about regapping my plugs to .045 or so. She ran fine either way but seems smoother with a smaller gap
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Old 01-13-2013, 08:34 PM   #59
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Find me NGK plugs with the same design as the HKS and I will believe that. Yes NGK does make the plugs for HKS but that does not mean it's the same thing as the NGK's. The design is different and better suited for boosted cars. I have the HKS plugs at the shop so I will take some pictures and get back to this thread when I have the chance.
Again, not hating on NGK or other brand of spark plugs out there.
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Old 01-13-2013, 08:45 PM   #60
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Bkr7e at .28

Sr, not very stock at all

These plugs are cheap, change them often.
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