plugs for 99 civic

[stealthex]

I dropped by the Speed Image to buy some colder plugs for my 99 civic ex today. He gave me the NGK BCPR7ES-11 plugs. These are 2 steps colder than the stock ZFR5F-11 plugs. The guy said that is what they used in their turbo civics. Are these the right plugs for my sc'ed civic?

[waveoff]

Those are the type of plugs that the integra guys use. I suppose it wouldn't hurt to use them. I'm using ZFR6F-11's but others have used ZFR7F-11's which are similar to the BCPR7ES-11's. Go check out NGK's website for some pretty interesting tech reading. http://www.ngksparkplugs.com

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Fred G.
'97 Civic EX supercharged http://www.geocities.com/motorcity/track/4059
Beech 1900D driver...2,558 shp, 10,000+ ft./lbs. tq., top speed 331 mph

[stealthex]

Isn't a heat range of 7 a little too much? The NGK website says one step colder for every 75-100 hp added. What would happen if the cold turns out to bee too cold?

[blowncivic]

Stealthex: I wonder about the same. I went from a ZFR5F-11 to a ZFR6F-11 with no noticable change in knock. If your plug is too cold, it fouls (doesn't get hot enough to consistantly clean itself).

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'92 Civic Si H/B (D16Z6) with JRSC, I/H/E...

[stealthex]

Well I finally put the plugs in. I gapped them at .035. Is this was it should be gapped at? What is the plug made of anyway? I don't really know much about plugs and the only ones I have seen are dirty ones. Are these copper or platinum? Thanks for the replies.

[HondaCivicEx98]

i changed to one step colder from stock, from what bigkat said.
as manual recommed to use .044 gap. Is there any difference by using .035?

[stealthex]

My helms manual says that stock plugs should be gapped .039-.043. I forgot who it was from searching but another civic owner did .035 so I did it too. Just to be on the safe side. I thought that plugs were supposed to be gapped a little closer when boosted with stock ignition? I don't think there is a difference because my stock plugs were never regapped. Should open it up a little? What are the benefits? So nobody knows if these are copper, platinum, or whatever?

[Bigkat]

<UL TYPE=SQUARE>
<LI> recommended plugs: NGK ZFR6F-11
note: run ZFR7F-11's over 200hp+@flywheel

<LI> Stock ignition w/boost: gap .035-.037

<LI> Aftermarket ignition: gap .040-.043[/list]




[This message has been edited by Bigkat (edited July 06, 2000).]

[acuraintegraman]

bcp's? i had the 7's and i thought they were for the civics. i have the zfr7's now. mine are gapped at .35, most people misfire with a bigger gap so .35 is pretty universal for turbo integras. not sure what is right for an sc civic

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Sam

95 Acura Integra LS-Turbo
http://homepages.go.com/~acuraintegr...ntegraman.html

[stealthex]

Bigkat, is there a place online that can I get the ZF's?