i acidently bought spark plugs for a gs-r(they were the bosch platinum +4 plugs 4417) instead of for an ls part # 4418...

i have high CR in my b18b (CTR pistons, around 12.2:1)

Modified by R-Spec at 9:11 PM 12/28/2004

EDIT: new Q
would the DENSO IRIDIUM POWER IK22 spark plugs work in my B18B?
it's colder then the IK16(for the b18b) or the IK20 (for the B18C)
the IK22 is used in the DC5-S and the S2K...


Modified by R-Spec at 2:54 AM 1/5/2005


Modified by R-Spec at 2:55 AM 1/5/2005

 

Umm, I dont know if you have run those plugs before but they misfired on me, if you want to get some bosch plugs id get the #4227, otherwise in my opinion NGK all the way

 

yea, i read sum bad things about them (i was just at autozone getting some other things and saw these plugs and got them) but i think i'm actually gona get sum ngk plugs anyways...

What NGK plugs would you guys recomend for a B18B1 w/ mods CTR pistons(12.2:1 CR) , intake, and full exhaust?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by R-Spec &raquo;</TD></TR><TR><TD CLASS="quote">What NGK plugs would you guys recomend for a B18B1 w/ mods CTR pistons(12.2:1 CR) , intake, and full exhaust?</TD></TR></TABLE>

That's really high compression. I'd recommend a 7 heat range plug such as:

ZFR7F-11 (stock B18B1 plug but 2 heat ranges colder). But ideally you might want an Iridium plug to withstand the extreme compression. and give you more consistant firing. Coppers won't last all that long. You could try BKR7EIX-11 for Iridium or even PFR7G-11 for a Laser Platinum plug (stock S2000 plug). We also stock all of these if you need some.
-Mike

 

cool thanks, what about gapping? stock gap or different?

 

What kinda cams are you running, Crowers? Crane?

 

stock...yea i know i'm way undercammed

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Import RP &raquo;</TD></TR><TR><TD CLASS="quote">That's really high compression. I'd recommend a 7 heat range plug such as:

ZFR7F-11 (stock B18B1 plug but 2 heat ranges colder). But ideally you might want an Iridium plug to withstand the extreme compression. and give you more consistant firing. Coppers won't last all that long. You could try BKR7EIX-11 for Iridium or even PFR7G-11 for a Laser Platinum plug (stock S2000 plug). We also stock all of these if you need some.
-Mike</TD></TR></TABLE>

Not my intention to ***** the thread, because I have the same CR... but... I'm using Coppers, would an iridium plug really give me more power? I was under the impression copper is a better conductor. Been using the BKR7E-11s.

 

so NGK IX Iridium Plugs Temp 7 for b-series engines, that's what BKR7EIX-11 is, corect?

so how long do Iridium usually last, i know copper usually last like 10k - 15k mi, and platinum last a lot longer...

 

Bump

 

just a bit of info from the uk. don't know whether it's the same for RSX type-S.

the EP3 CTR from factory comes with NGK IX plugs. will get spec when i get home.

 

see the only thing with an LS is it doesnt rev as high as a B16 or a GSR so choosing a plug can be difficult, on my GSR I use NGK R5671A-8, its been known to be a good all motor plug with high compression, I guess its just gonna be trial and error.

 

Iridiums or Copper? If Iridiums will work better for a high compression engine, I'll get some before I head down to the dyno today.

 

how about: DENSO IRIDIUM POWER SPARK PLUG IK16?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by LSVTEC 91 Civic &raquo;</TD></TR><TR><TD CLASS="quote">Iridiums or Copper? If Iridiums will work better for a high compression engine, I'll get some before I head down to the dyno today.</TD></TR></TABLE>
copper!! it's the best conductor

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by R-Spec &raquo;</TD></TR><TR><TD CLASS="quote">how about: DENSO IRIDIUM POWER SPARK PLUG IK16?</TD></TR></TABLE>

Do not buy DENSO'S, they are soooooo not worth the money, unless you can get them dirt cheap they are not worth the $80 you will pay for 4, NGKs

 

the denso are like $45 and the NGK are like $80...and the denso's i gues have a better iridium tip?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by R-Spec &raquo;</TD></TR><TR><TD CLASS="quote">the denso are like $45 and the NGK are like $80...and the denso's i gues have a better iridium tip?</TD></TR></TABLE>

IMO just buy the NGK V-Powers, only like $3 a plug, best bang for the buck, dont waste money on expensive plugs with a mostly stock motor, I run NGKs on my fully built GSR that makes 210hp.

 

would the DENSO IRIDIUM POWER IK22 spark plugs work in my B18B?
it's colder then the IK16(for the b18b) or the IK20 (for the B18C)
the IK22 is used in the DC5-S and the S2K...

 

did u take my words?
get something made by copper

 

is copper best for real high CR?

 

NGK BKR7E's.

Cheap, 7 heat range, and I also use them in my high compression LS with CTR pistons.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by R-Spec &raquo;</TD></TR><TR><TD CLASS="quote">would the DENSO IRIDIUM POWER IK22 spark plugs work in my B18B?
it's colder then the IK16(for the b18b) or the IK20 (for the B18C)
the IK22 is used in the DC5-S and the S2K...</TD></TR></TABLE>

Yeah there is a reason that plug is made for the S2K and DC5, thats because those motors rev to 9k so they design the spark plug so that at higher rpms the spark from the incoming air charge doesnt blow out, thats the reason Denso gives for that plug. You are the one that controls your destiny, if your gonna do what you want to do then dont ask for opinions, because it looks like people are telling you to not buy Denso's yet you keep asking about them.

 

the difference between copper, platinum and iridium is that iridium and platimum both last longer than copper. copper doesn't last as long, but it's the best conductor and is way cheaper than any of the other two.
Most cars come equiped with Platinums/iridiums because they last longer.
Also, the iridium electrode is smaller than the copper, thus comcentrating the spark much higher than the larger copper electrode

Iridium plugs allow a larger gap to be run, which gives a larger flame kernel to ignite the mixture. This allows for a more effecient burn. However, it takes more energy to create that larger kernel, therefore many of the benefits of the larger gap are lost because of the higher power needed to create the spark

 

i ran denso iridium in my b16 with ctr pistons. Throttle response was WAYYYYY better with them in there, but they fouled out after about 3 or 5 thousand miles. I think it was from running octane boost though. I went back to NGK after that, i want to run denso again just havent gotten around to getting them. I would definately recommend denso iridium.