Spark Plugs and N2O

[TRDeez Nutz]

I just ordered the NX single stage wet kit and was told that I need to go 2 degrees lower on my spark plugs....:wtf: WTF does that mean? I though we came stock with Iridium plugs, so what do I need to change to?
Also, I am using this car...for the time being...as a daily driver, so I dont want to change my plugs every freakin weekend. N E suggestions?

[celica2000TRD]

I also want to know cause i am about to purchase one too, thanks

[larryd]

the stock iridum plugs are great for n/a applications.. but when you run forced induction of some sort you want a colder plug, I believe copper plugs are colder.. Regardless the plugs you want are like NGKs.. just go to your local parts store and tell them you need a colder plug for the Celica becuase your running nitrous and theyll hook u up.

[IRL]

I have searched page after page on pretty much all the forums I know regarding Nitrous...now I still have 1 question!

With Celica's (GTS) I read alot of recommendations for the NGK Plugs, which is great...BUT, I have yet to read a post regarding a part number. I went through a few posts here and there at ClubSI and they seem to use the NGK-BKR7E.

My question...is this the plug that we would use on our GT-S's? I was thinking it would be...but then I read that stock our plugs are gapped at 0.44, the plugs the NGK-BKR7E's are gapped at 0.38-0.40. To me it doesnt make much sense...since I dont really understand it, but...will they work with Nitrous on our cars? Or do I need another model??

Please someone help...I need to get some plugs before I spray! :)

Thanks so much...

[IRL]

TTT

:)

[larryd]

i honestly dont know.. I suggest contact NOStech and asking them.. they should be able to tell you exactly what plugs and what you should gap them at

[chameleon]

I have a bad feeling about what I am goint to post, like I am going to get flamed for being ignorant or something, but...

Why cant you just take the NGK-BKR7E's and gap them at 0.44 instead of the 0.38-0.40 gap they come with? I mean, with every tune up I've ever done I've never been able to take the spark plugs out of the box and just screw them in, they have always needed their gap to be adjusted. Why would these be any different?

[larryd]

"but then I read that stock our plugs are gapped at 0.44, the plugs the NGK-BKR7E's are gapped at 0.38-0.40"

ive never heard of a plug only being gapable from point x to point x.. this is a first to me..

[IRL]

Thanks for the reply guys,

LarryD...I got the from ClubSi. Their nitrous forum is pretty good for info most of the time...so when I read that, I assumed it was right.

I am heading to my local racing shop this week....filling up the bottle, and asking for new plugs...hopefully I get the right ones... :)

Thanks again guys, I appreciate it!

[larryd]

i thnik they may be saying that that is waht they gap them at.. spark plugs usually dont come pregapped from point a to point b.. I know with the DSM guys you can gap them from one point to another point depending on how much boost you plan on running

[MaasNeotek]

Which plugs were you using when you were squeezin?

The stock plugs in the Celi are platinum Denso's - so they aren't good. (Tend to misfire/prefire/detonate/etc.)

If you recall the plug numbers - we'd appreciate it....

Cheers...

[BoyRacer]

Originally posted by MaasNeotek
Which plugs were you using when you were squeezin?

The stock plugs in the Celi are platinum Denso's - so they aren't good. (Tend to misfire/prefire/detonate/etc.)

If you recall the plug numbers - we'd appreciate it....

Cheers...


NGK's......no the stock iridiums are to hot a spark. they will melt eventually, and mess things up if you spray with them in, so i have heard.

[MaasNeotek]

Just for clarification - I'll say again... stock plugs are platinum - not Iridium. Iridium is fine - if you go a couple degrees colder.

Does anyone have the NGK part number though....? ??

[kuruptgt]

platinum plugs are no good for nitrous. nitrous wharehouse told me to to go 2 degrees colder of a plug like ngk or just get the bosh equivilent<---spelling} to our stock plug. because the bosh does not have to be colder for some reason. so goto the parts store tell em to find yur plug crossreferance it to bosh and there you go or get ngk non platinum 2 degrees colder. she told me to gap em at .30 that souds kinda low so im gonna gap em at .35 that should be fine for everyday driving.

[Slant]

Originally posted by MaasNeotek
Just for clarification - I'll say again... stock plugs are platinum - not Iridium. Iridium is fine - if you go a couple degrees colder.



You can say it as many times as you want, but my car came with NGK Iridiums and Iridium is not fine for nitrous.

I'm running Zex plugs. They are two degrees colder and pre-gapped.

[MaasNeotek]

Must be different in Canada - all Celicas here are sold with Denso Platinums as stock.

[RXvedub]

HEY!!!!!

I didnt read all the posts but what I recomend is any NGK plug with the nuber '9' or '10' in it. I have dealt many times with nos and forced induction. I have a Gt and I am running th 7's in it n/a and it runs perfect. for a gts, "STOCK" they are too hot. so you need a '9' or '10' I would put a '10' to be safe.

With NGK's the biger the number, the coplder the plug.

Any questions feel free to email me. if you email me I will give you my number so you can call me.

[larryd]

I dont remember the exact part # or anything.. I just went to the local parts store and told them I wanted coppyer NGK plugs for running nitrous.. and they gave me the same set 3 different times so I assume I had the right ones

[Iwannagofast]

anybody get the part numbers yet?

[RedNOSceli]

so what exactly makes a "Colder" Plug different? I mean, what makes a plug colder and why does that make it safer for Nitrous?

BTW, my buddie blew the electrode off of his stock densos...Not melted, but it looked like it blew the tip right off the electrode...Some how it broke off...Another thing that was strange was that one side of the Plug was red and the other side of the plug was sootty(sp?) like it was running lean on one side and rich on the other...strange...any suggestions?

[IRL]

The tips "blew" off because he was running VERY lean and burned the electrode off. :(

Not good news if you keep driving your car hard, then severe engine failure occurs...

Did you friend have any problems after burning the plugs?? And what kind of shot was he running?

[ArchangelX]

SO...if I'm running rich, there's less chance of burning the tips off?

I'm glad I got mine dyno-tuned...whew. I don't like burning my tip..it hurts.

[larryd]

running rich means your tips would be black.. really nasty and your spark wouldnt be that great, meaning less power

[RyZerX]

Hey MaasNeotek
Could Toyota use different plugs for each Region? Cause I have a 2000 Celica GTS 6- Speed. My stock plugs are NGK IFR6T-11 which are Platinum plugs according to NGKSPARKPLUGS.com
I see other people here swear they have Iridium plugs. Maybe because the NGK plugs have the letter I R on them, cause my plugs do. I always thought I had Iriduim plugs just by the letters on the plug IR. But when I looked up plugs at NGKs website for my celica they where the platinum type.

heres another aritcle relating to plugs and nitrous most of you already know this but I post it anyways its mostly for LT1 motors but the same basic rules apply i guess.
http://www.performancess.com/ngk.html

I am running a NX Express 50 shot using a richer setup then what nitrous express recommends on jetting. Nitrous Express direction says 20 for the fuel jet, and 35 for the N2O jet. I am currently running a 22 for fuel and 35 for N2O jets. Better to run alittle richer then leaner. I am currently running NGK BKR7E gapped at .038. Been running the car on n20 for about a week now been pulling plugs everynight and they are looking fine.

2000 Celica GTS 6-Speed
Wings West Kit
AEM intake
TRD Extended exhaust
Kumo Shift bushings
Nitrous Express 50 Shot
Gen X 2 Kit, Remote bottle opener

[kuruptgt]

iridium plugs are fine for runnin nitrous as long as they are 2 steps colder. platinum is what you want to saty away from.

[Erik00AutoGT-S]

NGK BKR7E
Part number 6097
Go to "http://www.clubplug.net/"
Click on "Order Plugs", then "All others", and you'll find them down the list. They are $2.14 each, sold in box of 10.

[RyZerX]

http://www.sparkplugs.com has them for $1.99 alittle cheaper.

[Quick_GT-S]

I have been running 60 shot in my GTS for over a year now, with the stock plugs. The old rule of thumb was 1 degree cooler for every 75hp increase. I still have the factory plugs in at 20k miles and have not had any problems. It is a good idea to close the gap a little when going to forced induction, it keeps from blowing out the spark.

I ran 120 shot on my MR2 for a 1.5 years with 1 degree cooler NGK's and never had any problems.

[MaasNeotek]

Originally posted by RyZerX
Hey MaasNeotek
Could Toyota use different plugs for each Region? Cause I have a 2000 Celica GTS 6- Speed. My stock plugs are NGK IFR6T-11 which are Platinum plugs according to NGKSPARKPLUGS.com
I see other people here swear they have Iridium plugs. Maybe because the NGK plugs have the letter I R on them, cause my plugs do. I always thought I had Iriduim plugs just by the letters on the plug IR. But when I looked up plugs at NGKs website for my celica they where the platinum type.


I don't think it's 'region' - more - what batch of plugs the factory was using that day. Toyota gets 'PLUGS' and puts them in on the install line. NGK / Denso / NipponDenso - Whatever is handy.

Interestingly enough, while the dealership told me the Denso Iridium was stock, I pulled my plugs (when I switched to NipponDenso Iridium Power IK22's) and they were the NGK IFR Iridium. Heres the secret. They are Iridium. - With a platinum electrode.

Spark plugs are magical. I no longer try to understand.

I'll use my IK22's until they too are toast, then, I'll get NGK's, or if I continue to carry the Denso's - them again.

RedNOSCeli said:
so what exactly makes a "Colder" Plug different? I mean, what makes a plug colder and why does that make it safer for Nitrous?

BTW, my buddie blew the electrode off of his stock densos...Not melted, but it looked like it blew the tip right off the electrode...Some how it broke off...Another thing that was strange was that one side of the Plug was red and the other side of the plug was sootty(sp?) like it was running lean on one side and rich on the other...strange...any suggestions?

Colder plugs are just that... colder. The temp range on a plug refers to it's ability as a cold sink. Hotter the plug, the less heat is removed from the cylinder. Colder plugs pull MORE heat from the cylinder - preventing detonation. The down side? Cold plugs will foul up faster.

Broken electrodes? That is a sure fire sign of detonation. Period. Full stop.

Discoloration? Could be that it was detonating at the injector (which may be on 1 specific side of the plug (based on the index of the plug) - but to be that noticeable? Who knows.. sounds bad.

[RedNOSceli]

Originally posted by IRL
The tips "blew" off because he was running VERY lean and burned the electrode off. :(

Not good news if you keep driving your car hard, then severe engine failure occurs...

Did you friend have any problems after burning the plugs?? And what kind of shot was he running?

I know the differance between a melted plug and a broken plug...The plug broke because of detonation.

[IRL]

Well as you can tell, I am still a hardcore "newbie" when it comes to nitrous.. ;)

I am trying to learn...slowly but surely!

So my new question is...

What exactly is a melted plug vs a broken plug??

Which would cause more damage??

Last but not least...tell me the condition of these plugs, melted or broken?

Thanks so much man...

http://members.shaw.ca/ileiva/plugs/bad-plug-3.JPG

http://members.shaw.ca/ileiva/plugs/bad-plug-2.JPG

[larryd]

that looks melted.. if it was broken.. the whole arch thing would most likely be gone.. but im not an expert :)

[caminsc5]

how do u gap spark plugs

[larryd]

with a spark plug gapper

[caminsc5]

dammit dont have one........can i buy them already gapped?

[larryd]

most dont come pregapped to what u want, just buy the gapper..itsl ike a dollar at any parts store

[spaldam]

If your gaps too big, it take too much power to create a spark. If you r gaps too small you won't get a wide enough arc to fully ignite the fuel. Also the higher the air pressure (FI, high compression, or however you raise the air pressure), the harder it is for an electrical spark to be created, and making a shorter gap compensates for the higher pressure.

[shyvpboi]

I see that some people use the NGK BKR7E which is at 7 degrees, which fine for the GT, but is not 2 degree lower than stock for a GTS. From the NGK website, our car uses the NGK IFR6T-11 which is at 6 degrees, even though in the TSB it shows our cars to run the NGK IFR54A-11 which is an older version of the new IFR6T-11 I think. So does anyone know what NGK colder spark plug to use that is in the 8 degree range?