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Thread: high hp 2jz spark plugs?

  1. #1
    Junior Member 1st year Apprentice
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    Smile high hp 2jz spark plugs?

    what plugs with what heat range are you guys running in high hp high boost (25psi+)2jzs
    im currently running NGK BCPR7ES and just curius to see what others are running.

  2. #2
    Forum Member 1st year Apprentice
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    Default Re: high hp 2jz spark plugs?

    BKR8ES gapped at 1.1mm

    cheers
    Jo
    987 RWHP - No Nitrous Required


    Remember that the poor product remains long after the cheap price has been forgotten............

  3. #3
    Junior Member 1st year Apprentice
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    Default Re: high hp 2jz spark plugs?

    6 speed; what ignition and fuel?

  4. #4
    Forum Member 1st year Apprentice
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    Default Re: high hp 2jz spark plugs?

    Standard Toyota Coils with Autronic CDI
    C-16 fuel for the big HP, 650rwhp on BP Ultimate with the same plugs

    cheers
    Jo
    987 RWHP - No Nitrous Required


    Remember that the poor product remains long after the cheap price has been forgotten............

  5. #5
    Learner Driver Backyard Mechanic
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    Default Re: high hp 2jz spark plugs?

    Quote Originally Posted by 6_SPEED
    BKR8ES gapped at 1.1mm

    cheers
    Jo
    1.1mm gap?

    How much hp do you make with that?


    When we got up past 500hp atw we had to get down to .7mm or less to stop missfires.

    That's with std coils and plugs, but aftermarket ecu.
    - KE70 Corolla Dx -
    - 500hp+ 7AGTE 20V turbo -
    - MRS/Hayabusa turbo **sold**
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  6. #6
    Junior Member Domestic Engineer
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    Default Re: high hp 2jz spark plugs?

    CDI makes a big difference..........
    Rep points are for those who feel inadequate in other areas !

  7. #7
    regular fella Conversion King chris davey's Avatar
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    Default Re: high hp 2jz spark plugs?

    looks like a freaking huge difference actually
    Quote Originally Posted by MR 1JZ View Post
    that interior is so jap...just looking at it makes me want to kill a whale
    QUICKEST 1JZ'S IN OZ

  8. #8
    Junior Member 1st year Apprentice
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    Default Re: high hp 2jz spark plugs?

    dx20vt : what plugs are you running?

  9. #9
    Junior Member 1st year Apprentice onboost's Avatar
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    Default Re: high hp 2jz spark plugs?

    I use bkr7es gapped to .6 making just under 600 hp through glide and 9inch stock coils and no cdi and they look not too bad. Range colder in bkr range are bkr8es -11 i dont use them due to 1.1 std gap you can get bkr8e meaning its a std plug not a v power . I will be giving them a shot next with nos.

  10. #10
    Learner Driver Backyard Mechanic
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    Default Re: high hp 2jz spark plugs?

    Quote Originally Posted by al167
    dx20vt : what plugs are you running?
    Been a while since I was in there so not 100% sure.
    Probably the listed genuine denso one's through toyota re-gapped.
    - KE70 Corolla Dx -
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  11. #11
    Junior Member 1st year Apprentice
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    Default Re: high hp 2jz spark plugs?

    the standard plug for a 2j is BKR6EP-11

    heres an extract from the ngk website
    Heat Range

    With modified engines (those engines that have increased their compression) more heat is a by-product of the added power that normally comes with increased compression. In short, select one heat range colder for every 75-100 hp you add, or when you significantly raise compression. Also remember to retard the timing a little and to increase fuel enrichment and octane. These tips are critical when adding forced induction (turbos, superchargers or nitrous kits), and failure to address ALL of these areas will virtually guarantee engine damage.

    maybe the 7 is too hot for 500+ rwhp? if what above is correct then id need probably 3 steps cooler and maybe a 9
    any thaughts?

  12. #12
    2JZ POWA Chief Engine Builder GU11TY's Avatar
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    Default Re: high hp 2jz spark plugs?

    guys sorry to bring up an old thread bu im having this problem i think
    at 440rwhp my car is misfiring, at the moment im putting it down to fuel but cause also be spark
    im running bosch coils and leads and ngk plugs 0.7 at the moment on 2jz with microtech ignighter
    o was gonna go back to 0.6 to try that
    Z20 SOARER WHORE (totalling 14 z20s so far)
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  13. #13
    Toymods Pimp Chief Engine Builder Norbie's Avatar
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    Default Re: high hp 2jz spark plugs?

    At that power level I'd seriously consider CDI. My 2JZ is putting down 442rwhp with no hint of misfire, using an MSD DIS4 and stock coils. Some might say it's overkill but at least you don't have to be concerned about ignition again and it gives you plenty of room for future power upgrades.

  14. #14
    Building Corollas Chief Engine Builder Cuzzo's Avatar
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    Default Re: high hp 2jz spark plugs?

    Quote Originally Posted by GU11TY View Post
    guys sorry to bring up an old thread bu im having this problem i think
    at 440rwhp my car is misfiring, at the moment im putting it down to fuel but cause also be spark
    im running bosch coils and leads and ngk plugs 0.7 at the moment on 2jz with microtech ignighter
    o was gonna go back to 0.6 to try that
    Just a thought. What boost you running? Is it spiking up to the boost cut or even the map sensor limit of the microtech. i think the map limit is 25PSI.
    KE30 4agte - Bullet - Rick Rolled
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    Quote Originally Posted by -GT- View Post
    You had an oil and plastics engine bay fire, with flames that reached at least to the roof - of course shit got hot, it wasn't burning jiffy firelighters back there.

  15. #15
    2JZ POWA Chief Engine Builder GU11TY's Avatar
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    Default Re: high hp 2jz spark plugs?

    anything above 15psi it will start misfiring. i got a 30psi map senso on the microtech
    i just wanna run 20psi
    Z20 SOARER WHORE (totalling 14 z20s so far)
    PREVIOUS RIDES - 5 GZ20 soarers, 1 MZ20 soarer, 2 MZ20 aerocabins soarers, 7 MZ21 soarers, 3 ke70s, AE92 rola, 1973 corona, 85 corona, tarago party bus
    CURRENT - 530hp 2jz MZ20 Soarer and race soarer with carbon fibre bonnet and boot and 8point cage

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