Results 1 to 11 of 11

Thread: spark plugs

Forum to discuss Austin Healey Sports Cars

  1. #1
    Senior Member
    Join Date
    Dec 2010
    Location
    Chapel Hill, NC
    Posts
    55
    Thanks Thanks Given 
    0
    Thanks Thanks Received 
    0
    Thanked in
    0 Posts

    spark plugs

    What are the recommended spark plugs for my 67 BJ8. I think I had used NGK and Champions in the past. Are there any newer versions than what has been used for the last 40 years.

  2. #2
    Great Pumpkin Keoke's Avatar
    Join Date
    Apr 2004
    Location
    LosAngeles Calif.
    Posts
    12,685
    Thanks Thanks Given 
    0
    Thanks Thanks Received 
    12
    Thanked in
    12 Posts

    Re: spark plugs

    Quote Originally Posted by Goldie View Post
    What are the recommended spark plugs for my 67 BJ8. I think I had used NGK and Champions in the past. Are there any newer versions than what has been used for the last 40 years.

    Bosh Platinum "WR 7DP" can't be beat
    1966 Daimler V8 Saloon; Safely Fast, Built to Last & and; Smooth as Glass.
    1966 BJ8 [ 2 ] Lil Red & Miss bLU
    1985 XJ6 Saloon
    1948 & 70 Lincoln continentals
    1973 Volvo P1800ES

  3. The Following User Says Thank You to Keoke For This Useful Post:

    kkaa (05-09-2020)

  4. #3
    Jedi Warrior red57's Avatar
    Join Date
    Apr 2008
    Location
    Washington, USA
    Posts
    617
    Thanks Thanks Given 
    11
    Thanks Thanks Received 
    29
    Thanked in
    25 Posts

    Re: spark plugs

    NGK BP6ES are my favorites....
    Dave

  5. #4
    Yoda Randy Forbes's Avatar
    Join Date
    Feb 2003
    Location
    SW Florida (Sarasota/Bradenton area)
    Posts
    4,534
    Thanks Thanks Given 
    12
    Thanks Thanks Received 
    41
    Thanked in
    36 Posts

    Re: spark plugs

    Quote Originally Posted by red57 View Post
    NGK BP6ES are my favorites....
    Dave
    +1
    http://www.britishcarforum.com/bcf/image.php
    57 Healey BN6L-942 Wine Red/Honey Tan
    99 BMW M Coupe EB w/ ES/TS & 99 M Rdstr BK/BK
    01 BMW M Rdstr Steel Gray Performance Center (factory) Delivery
    16 X5M/DINAN Stg II Mineral White Metallic Wife's 716 hp/702 Lb-ft Turbo Hauler

  6. #5
    Luke Skywalker
    Join Date
    Mar 2003
    Location
    Hampshire in the UK
    Posts
    1,782
    Thanks Thanks Given 
    0
    Thanks Thanks Received 
    8
    Thanked in
    8 Posts

    Re: spark plugs

    Quote Originally Posted by red57 View Post
    NGK BP6ES are my favorites....
    Dave
    Yup Me too



    Bob

  7. #6
    Jedi Warrior Drone Dog's Avatar
    Join Date
    Jun 2017
    Location
    Seaford, DE
    Posts
    637
    Thanks Thanks Given 
    2
    Thanks Thanks Received 
    13
    Thanked in
    12 Posts

    Re: spark plugs

    What gap do you run them at? i am running a Pertronix ignitor. Also would the resister version help on the Pertronix ignition?

  8. #7
    Yoda Michael Oritt's Avatar
    Join Date
    Jun 2001
    Location
    Lusby, MD, USA
    Posts
    3,438
    Thanks Thanks Given 
    10
    Thanks Thanks Received 
    52
    Thanked in
    40 Posts

    Re: spark plugs

    They come at .030 out of the box--or are supposed to anyway. I always check the gap before installation but I cannot recall a time when I had to reset the gap, and I am talking about on the race cars for which I will change plugs at least once a weekend whether I need to or not, which comes to a lot of plugs.

    If there is a guy at the NGK factory whose job it is to set the gap on each plug before putting it in the box he deserves a shoutout.

    Best--Michael Oritt
    1954 Austin-Healey 100 Le Mans
    1959 Elva MK IV Sports Racer
    1961 Ginetta G4

  9. #8
    Obi Wan RAC68's Avatar
    Join Date
    May 2010
    Location
    NJ Shore
    Posts
    2,154
    Thanks Thanks Given 
    0
    Thanks Thanks Received 
    29
    Thanked in
    27 Posts

    Re: spark plugs

    Hi All,

    I like the NGK plugs as well and often wondered if a wider gap would be beneficial. I am using a Crane electronic ignition and Hot coil with the original distributor but have remained at 0.030 plug gap because the car revs freely to over 5K RPMs without difficulty.

    I guess I will stick to the settings I have since all seems well and I am not sure what I would gain by expanding the gap in our engines.

    Ray(64BJ8P1)

  10. #9
    Yoda
    Join Date
    Feb 2007
    Location
    California USA
    Posts
    4,218
    Thanks Thanks Given 
    5
    Thanks Thanks Received 
    66
    Thanked in
    59 Posts

    Re: spark plugs

    Quote Originally Posted by Drone Dog View Post
    What gap do you run them at? i am running a Pertronix ignitor. Also would the resister version help on the Pertronix ignition?
    I'm running OEM Lucas cap, Ignitor, stock coil, stranded copper core wires, resistor plug terminals and Champion RN12YC plugs (both the terminals and plugs are 15KOhms, I believe). Book gap is 0.025," I run at 0.028". I don't think the Ignitor cares about the secondary resistance--that's mostly to mitigate EMI and the wires are electrically isolated by the coil--but there is a spec for coil resistance (IIRC it's 1.5ohms). I've run this setup for at least 100K miles with no issues; the only ignition problem I've had was an aftermarket distributor cap--I think it was Bosch--which arced under load and caused an intermittent miss.

    Side note: I have an Aussie 'internet friend' who wanted to surprise one of his mates doing a concours resto with some OEM Champion plugs. The only ones he could find were a couple sellers on eBay, but they wouldn't ship to Australia. So, he had them sent to me and I forwarded them to him. Might have been that last .01 point at concours

  11. #10
    Yoda John Turney's Avatar
    Join Date
    May 2002
    Location
    Concord, CA
    Posts
    3,971
    Thanks Thanks Given 
    78
    Thanks Thanks Received 
    49
    Thanked in
    47 Posts

    Re: spark plugs

    Quote Originally Posted by RAC68 View Post
    Hi All,

    I like the NGK plugs as well and often wondered if a wider gap would be beneficial. I am using a Crane electronic ignition and Hot coil with the original distributor but have remained at 0.030 plug gap because the car revs freely to over 5K RPMs without difficulty.

    I guess I will stick to the settings I have since all seems well and I am not sure what I would gain by expanding the gap in our engines.

    Ray(64BJ8P1)
    With my Crane and Sports Coil I measured ~50K volts for the spark. With that much voltage, one could probably get away with a 0.250 gap. Yes, I really do mean a quarter inch.
    John, BN4

  12. #11
    Great Pumpkin Keoke's Avatar
    Join Date
    Apr 2004
    Location
    LosAngeles Calif.
    Posts
    12,685
    Thanks Thanks Given 
    0
    Thanks Thanks Received 
    12
    Thanked in
    12 Posts

    Re: spark plugs

    With a sports coil and pertronicx, Solid stranded plug wires and Bosh connectors I run 40 thousands on the plug gap
    1966 Daimler V8 Saloon; Safely Fast, Built to Last & and; Smooth as Glass.
    1966 BJ8 [ 2 ] Lil Red & Miss bLU
    1985 XJ6 Saloon
    1948 & 70 Lincoln continentals
    1973 Volvo P1800ES

Tags for this Thread

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •