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Thread: Spark plugs & oil

  1. 12th July 2012, 07:29 AM #21
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    Scouse
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    Quote Originally Posted by RR P38 View Post
    A dab of Never seize might be wise with these long life plugs?
    I do that any way, regardless of how long the plug will stay in, especially in an alloy head.
    Scott
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  2. 26th July 2012, 08:46 PM #22
    redandy3575
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    Just ordered the NGK iridium off ebay, which seem to be a good deal.

    I'd say Bosch, NGK are the pick when it comes to plugs. NGK i've seemed to have gotten a better run out of them in the past. Will be interesting to see how the iridium's go.

    Just don't tell my old man, he used to work at BOSCH
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  3. 26th July 2012, 08:53 PM #23
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    Quote Originally Posted by Scouse View Post
    I do that any way, regardless of how long the plug will stay in, especially in an alloy head.
    And THAT above all illustrates above all why I prefer Bosch over NGK. Many sets of NGK plugs I have dragged out kicking and screaming out of alloy heads, the Bosch plugs just don't grab like that. Bosch plug threads are nickel plated which has a far higher heat tolerance than whatever NGK use. I don't lube Bosch plugs with anything other than a light spray of penetrating oil and I don't ever have plugs seize like the NGK's that other mechanics fit.
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  4. 27th July 2012, 04:38 PM #24
    philmoon
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    well I must be the unluckiest bugger in history as in my last 3 years ( albeit 9 cars ) I have had 2 stuck plugs !!! Both requiring a helicoil.. One in a Gu patrol with iridium plugs (Ngk) and the other in ........ you Guessed it a 4.6 range rover .... iridium again and this time bosch ....... perhaps just unlucky but some times it feels the more we spend ....... the more we spend !!! ....
    P.s I didnt fit the iridiums to either vehicle I bought the cars with them in !!!!!!!!!!!!!
    Also just for the .... of it my Hilux with a holden 308 runs a Bosch fusion (not listed for 308 but if you do research you can find many bosch fit non listed ) ...... smooooooooooooth .... well with lumpy cams !!! ha ha ha ha
    Last edited by Scouse; 28th July 2012 at 06:32 PM. Reason: Swearing removed
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  5. 27th July 2012, 10:56 PM #25
    redandy3575
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    Quote Originally Posted by philmoon View Post
    well I must be the unluckiest bugger in history as in my last 3 years ( albeit 9 cars ) I have had 2 stuck plugs !!! Both requiring a helicoil.. One in a Gu patrol with iridium plugs (Ngk) and the other in ........ you Guessed it a 4.6 range rover .... iridium again and this time bosch ....... perhaps just unlucky but some times it feels the more we spend ....... the more we spend !!! ....
    P.s I didnt fit the iridiums to either vehicle I bought the cars with them in !!!!!!!!!!!!!
    Also just for the .... of it my Hilux with a holden 308 runs a Bosch fusion (not listed for 308 but if you do research you can find many bosch fit non listed ) ...... smooooooooooooth .... well with lumpy cams !!! ha ha ha ha
    Interesting.

    Ummm......have you had a few drinks when writing this Phil??
    Last edited by Scouse; 28th July 2012 at 06:32 PM. Reason: Swearing removed from quote
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  6. 27th July 2012, 11:08 PM #26
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    spark plugs

    Ngk plugs have a solid copper core, Bosch and Champion are only copper coated. Most Iridium/Platinum plugs will stick no matter what the threads are plated with, its the length of time they are in there, the type of alloy the heads are made of, and whether they have been hot a few times. Both Ngk and Bosch are nickel plated.
    We get tight plugs all the time, no matter what brand, usually in an alloy head. A dab of anti seize on all new plugs cures seizing.


    Quote Originally Posted by bee utey View Post
    And THAT above all illustrates above all why I prefer Bosch over NGK. Many sets of NGK plugs I have dragged out kicking and screaming out of alloy heads, the Bosch plugs just don't grab like that. Bosch plug threads are nickel plated which has a far higher heat tolerance than whatever NGK use. I don't lube Bosch plugs with anything other than a light spray of penetrating oil and I don't ever have plugs seize like the NGK's that other mechanics fit.
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