E85 spark plug suggestions?
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E85 spark plug suggestions?

  1. #1
    Senior Member jrider44's Avatar
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    Default E85 spark plug suggestions?

    I have a 13:1 452 BBC, 049 iron heads, Mark Sullens E85 carbs converted 850 DP. Any suggestions on spark plugs and heat ranges? Would like to run NGK and need an NGK number. Thanks, Jason
    1978 Hawaiian Party Cruiser
    Stevens V-drive(sold to bbollig55)
    Spico V-drive

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    Highaboosta Unchained's Avatar
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    I run NGK V power 8

    Twin Turbo 1800 HP V-Drive lake boat

    http://s621.photobucket.com/albums/t...t=MAH05771.mp4

    Quote Originally Posted by Trigger View Post
    No one cares about your buddies old antiquated garden hose technology.
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    I think I could run more boost but it's a real hand full right now

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    stock # 3442 R5673-8

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    Senior Member steveo143's Avatar
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    X1000!!!!!!!!!
    steveo143 AKA DiMarco 21 II



    Now totally Green on E-85, saving the world one ear of corn at a time!
    RIP Davey B and Denis and Chris and Bob GN7

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    Senior Member jrider44's Avatar
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    Quote Originally Posted by mdsheppie View Post
    stock # 3442 R5673-8
    Will these fit an iron head with tapered seat?
    1978 Hawaiian Party Cruiser
    Stevens V-drive(sold to bbollig55)
    Spico V-drive

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    Quote Originally Posted by jrider44 View Post
    Will these fit an iron head with tapered seat?
    Yes

  9. #7
    Senior Member jrider44's Avatar
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    Quote Originally Posted by mdsheppie View Post
    stock # 3442 R5673-8
    Carb builder recommended NGK -7. Is that hotter and would that cause any problems?
    1978 Hawaiian Party Cruiser
    Stevens V-drive(sold to bbollig55)
    Spico V-drive

  10. #8
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    its hotter might work tho Ive used them but the 8 was a better fit with a blower ....It would be the same numbers (5673-7) the other numbers-3442 aren't necessary when you buy them
    Last edited by mdsheppie; 06-28-2013 at 09:04 AM.

  11. #9
    Senior Member jrider44's Avatar
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    Quote Originally Posted by steveo143 View Post
    X1000!!!!!!!!!
    What kind of engine set up do you run?
    1978 Hawaiian Party Cruiser
    Stevens V-drive(sold to bbollig55)
    Spico V-drive

  12. #10
    Senior Member steveo143's Avatar
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    Quote Originally Posted by jrider44 View Post
    What kind of engine set up do you run?
    496 BBC with Race Arrow twin turbo @17# boost. Currently switching it from carbs to EFI.
    steveo143 AKA DiMarco 21 II



    Now totally Green on E-85, saving the world one ear of corn at a time!
    RIP Davey B and Denis and Chris and Bob GN7

  13. #11
    Senior Member jrider44's Avatar
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    Thanks guys. I bought R5673-7's and might bring -8's with to the dyno on tuesday.
    1978 Hawaiian Party Cruiser
    Stevens V-drive(sold to bbollig55)
    Spico V-drive

  14. #12
    Village Idiot fc-Pilot's Avatar
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    Let us know how it goes.

    Paul

  15. #13
    Senior Member jrider44's Avatar
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    Quote Originally Posted by fc-Pilot View Post
    Let us know how it goes.

    Paul
    Dynoed engine today used the 5673-7 plugs. Mark Sullens E85 carbs did a great job on the carb! No changes made to carb...bolted on and ran. Made 516lb-ft at 4500 and 505hp at 5700.
    1978 Hawaiian Party Cruiser
    Stevens V-drive(sold to bbollig55)
    Spico V-drive

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