turbociv910

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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s13 LSx turbo drag car- 1.42 60 ft, 6.32 1/8

Tempo

NGK iridium plugs and bosch wires because i didnt want to wait for ngk wires to come in

stock ka24de

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supakat

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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12.96 @ 116.36 - Build Thread

qay2fotayesex

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.

silviaNC

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??

rb25_s13*CHUKI

NGK Bkr7e coppers gapped at.26

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Obliterate

rb25_s13*CHUKI

Not true, My dad ran .22 gap on his Evo 8 with buschar coilpacks which has plenty of spark

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Obliterate

OuTLaVvZ

if i get brk6e for mostly stock sr , do i need to regap or is it just plug and play?

Punished

I have never bought spark plugs that didn't need to be properly gapped.

Neon_rain519

NGK v-groove side gapped

frabus

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.

s13mikesr20

bkr7e enough said

2 dollars a plug and im making over 450 hp thank you

s13mikesr20

sr20det that is

PureRush

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!

jamg

so...

NGK BKR8EIX

OR

BKR7EIX

???

leung

That obviously depends on how much power you're making. I believe its one step colder for every 100hp up. 6 is stock.

hOngsterr

bkr7eix, i believe their pregapped .35 last time i checked myself lol

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jamg

300whp

colder, as in going down in numbers?

silviaNC

Just got a set of bkr8 for my build. Shooting for 450-475hp

AdamR

Just wanted to chime in to say that NGK says to not use anti-seize on their plugs.

project-D180

i use ngk or autolite ir ..i like them better than denso

dawagarage

+1 http://www.ngksparkplugs.com/pdf/TB-...1antisieze.pdf

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formerly known as "hotboiblaze"

ratsun: dawa (73 datsun 620)
clublexus: properD (97 sc300)

Corbic

A/C Delco. At $1 a piece you can't beat it. I change plugs like I change socks anymore.

!Zar!

I never knew that about the anti seize. OH WELL

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pewpew

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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Zed Nismo

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.

fliprayzin240sx

HKS sparkplugs are just rebranded NGK Iridiums.

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TheZ31Guy

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

Zed Nismo

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.

KoukiMonsta

Bkr7e at .28

Sr, not very stock at all

These plugs are cheap, change them often.

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