Best spark plugs for boost?

Basic tech questions such as future setups, different turbo kits, car diagnosis, etc
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mxinkid1
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Best spark plugs for boost?

Post by mxinkid1 »

Buying new plugs and plug wires before I install my turbo, are any plugs better than others for running boost? sorry for the newb question, thanks in advance
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beercandrifter
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Post by beercandrifter »

alot of people run ngk's

for me just the gapping of the plugs is what makes the difference for boost
I am still running my bkr5e ngk's at 18psi and they still havent fouled yet, my local autoparts store stopped carrying the 7e's for some reason. would recommend getting the higher end ngk's though because if all is tuned well you shouldnt have to replace them for 80k whereas the coppers get fouled after several months of use. just my experience though, sure others will chime in
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Post by nelson240sx »

bkr6e ... best plug for your average ka-t setup
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Post by boker240 »

ngk part # 1283,,a 2 steps colder plug. gapped @ 28-30 in hot weather,,,24-26 in cold a** weather.
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Post by Jus14 »

Agreed NGK
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Post by kaion1000 »

I'm just curious if someone could tell me some symptoms of plugs that are gapped too far, or not far enough.
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Post by beercandrifter »

backfiring, misfiring
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Post by Hot_Wheelz »

According to my spark plug post the NGK BKR6E plugs seem to be the way to go.. Has anyone used the NGK BKR7EIX plugs? Are they better??
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Post by Kfred »

Duncan and I have both had much better luck with NGK 3330's (bcpr7es) than the bkr7e plugs. They seem to last a lot longer and use a wider gap without blowing out.

Do not use a ngk 1283 like boker suggested or any ngk plug with a -11 on the part number. They are bkr7e-11 plugs as opposed to bkr7e plugs. The -11 signifies that they com e pre-gapped to 1.1mm or .043" and they consequently have a longer ground electrode then the standard bkr7e plugs. So, when you gap them down to .030" the groundstrap is at a hell of an angle and is more prone to blowout. The standard plugs come pre-gapped to .9mm (.035") and are much better suited for out application.

NGK 3330's for me, get them from Advance Auto for $1.69 a plug with my discount. :D
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Post by blacks13coupe »

Yeah he got me using the bcpr7es also. Currently gapped to .035, seems to be having slight blowout issues in this cold weather. But otherwise good.
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Post by 91_ka24de »

i thought going to a colder plug would be anything less than "brk5" like brk4. and i thought like brk6 or 7's where to hot for turbo applications
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Post by Kfred »

91_ka24de wrote:i thought going to a colder plug would be anything less than "brk5" like brk4. and i thought like brk6 or 7's where to hot for turbo applications
Ngk's heat range numbers are counterintuitive. The higher the number, the colder the plug.
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Post by basic »

actually, if you think about how the plug is made, and the difference between hot plugs and cold plugs (the length of the inner insulator) the higher number makes since - the higher number = longer insulator = colder plug.
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Post by WidebodyS14 »

i have always ran with the bkr6e
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Post by RAMM »

NGK7E on my setup
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Post by boker240 »

Kfred wrote:Duncan and I have both had much better luck with NGK 3330's (bcpr7es) than the bkr7e plugs. They seem to last a lot longer and use a wider gap without blowing out.

Do not use a ngk 1283 like boker suggested or any ngk plug with a -11 on the part number. They are bkr7e-11 plugs as opposed to bkr7e plugs. The -11 signifies that they com e pre-gapped to 1.1mm or .043" and they consequently have a longer ground electrode then the standard bkr7e plugs. So, when you gap them down to .030" the groundstrap is at a hell of an angle and is more prone to blowout. The standard plugs come pre-gapped to .9mm (.035") and are much better suited for out application.

NGK 3330's for me, get them from Advance Auto for $1.69 a plug with my discount. :D
to each his own. they worked fine for me. replaced them about every 6 months. and fyi there was NO spark blow out for me under .030" gap. the strap color change was good too. even the supposed best plug for "our application" is not gonna have a loooong life.
arias 8.8.1,615 tomie inj.,clevite bearings,arp 10mm hs,z32 maf,jwt ecu,intake butterflies removed,all emissions removed,cx rad. dif dual fan controller,altima dual fans,fidanza fw,stage 3 clutch,solid d shaft,j30 rearend,energy suspension bushings,kyb struts,155 lbs weight reduction.
currently n/a.
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Post by Kfred »

boker240 wrote: to each his own. they worked fine for me. replaced them about every 6 months. and fyi there was NO spark blow out for me under .030" gap. the strap color change was good too. even the supposed best plug for "our application" is not gonna have a loooong life.
To each his own my ass. We are not talking opinions here, we are talking facts.The bkr7e will perform better than a bkr7e-11 for our turbo applications. It is retarded to get a plug pregapped to .043" and gap it down to .030" when you can get the same plug (-ground strap length) pregapped to .035". Sure the bkr7e-11 may work but the bkr7e is better for this application, no question.
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Post by boker240 »

Kfred wrote:
boker240 wrote: to each his own. they worked fine for me. replaced them about every 6 months. and fyi there was NO spark blow out for me under .030" gap. the strap color change was good too. even the supposed best plug for "our application" is not gonna have a loooong life.
To each his own my ass. We are not talking opinions here, we are talking facts.The bkr7e will perform better than a bkr7e-11 for our turbo applications. It is retarded to get a plug pregapped to .043" and gap it down to .030" when you can get the same plug (-ground strap length) pregapped to .035". Sure the bkr7e-11 may work but the bkr7e is better for this application, no question.
whatever dude. there is no FACT when it comes to an aftermarket turbo application.there is extreme heat and abnormal conditions that vary set up to set up,,engine to engine,, so to say that its fact,, and don't use the one boker suggested and use the one "I" suggested is pretty arrogant. what are u the ka-t god!?!? lol, go f*ck ur self and ur OPINION cuz thats all it is. as said in previous post some have good luck with 6's and some 7's. blacks said he was having slight blowout in cold weather with "ur" best plug.tighten the gap up, i bet it goes away.


also a 6 =1 step colder and 7 is 2 steps colder ect.ect.
arias 8.8.1,615 tomie inj.,clevite bearings,arp 10mm hs,z32 maf,jwt ecu,intake butterflies removed,all emissions removed,cx rad. dif dual fan controller,altima dual fans,fidanza fw,stage 3 clutch,solid d shaft,j30 rearend,energy suspension bushings,kyb struts,155 lbs weight reduction.
currently n/a.
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He'll probably blow the motor, and then join the army of retards who hate on KA's for no good reason.
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Post by TanManS14 »

Yea, common man. Facts dont exist. 2+2 isnt necessarily 4. That's just your opinion. Plus 2012 is possibly bringing on the onslaught of planet x, a polar shift, and rabid unicorns to boot.
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Post by Kfred »

boker240 wrote: whatever dude. there is no FACT when it comes to an aftermarket turbo application.there is extreme heat and abnormal conditions that vary set up to set up,,engine to engine,, so to say that its fact,, and don't use the one boker suggested and use the one "I" suggested is pretty arrogant. what are u the ka-t god!?!? lol, go f*ck ur self and ur OPINION cuz thats all it is. as said in previous post some have good luck with 6's and some 7's. blacks said he was having slight blowout in cold weather with "ur" best plug.tighten the gap up, i bet it goes away.
I don't claim to be a ka-t god, nor did I tell the OP to use the plugs that I use. I was simply informing the OP that it would be more wise to get an ngk plug that comes pregapped to .035" than .043". This will result in a less extreme ground strap angle and therefore better plug life and performance.

Its not my opinion, google it. The worst possible ground strap configuration occurs when you gap down a plug too much and the electrode has a steep negative slope. You are shielding the kernel.

Would i use some ngk bkr7e-11 plugs gapped down to .028 if they were given to me? Sure.
Would I buy bkr7e-11 plugs over bkr7e plugs (they are the same price)? Hell no
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Post by will.yum »

Im runnin bkr7eix's gapped at .028

Honestly at first wasen't sure which to go with, the 6's or 7's but decided to just go with the 7's and everythings good as can be.
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