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  1. #1
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    Swapped Spark Plugs: check out my old plugs

    This is what my plugs look like after 30,000 plus miles. Tuned, countless 1/4 mile strip passes, Race Gas, and very spirited daily driving. Tell me what you guys think....

    Pic #1: shows plugs in the order I took them out . Started with cylinder closest to radiator. The one on the right is the cylinder closest to firewall.

    Pic#2: Plug on left side is the cylinder closest to Radiator.

    Pic#3: Plug on the right is the one closest to firewall.
    Attached Images Attached Images    
    Last edited by alpinedevil335; 12-02-2010 at 10:13 PM.

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    they were due lol

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    You just replaced them with OEM plugs?

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    Definitely well worn but no signs of major trouble! OEM plugs are the only option.

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    Notice any dramatic difference after the swap?

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    Click here to enlarge Originally Posted by unfor Click here to enlarge
    You just replaced them with OEM plugs?
    Yes, OEM

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    Click here to enlarge Originally Posted by dOpEdUpM3 Click here to enlarge
    Notice any dramatic difference after the swap?
    Lil bit

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    Click here to enlarge Originally Posted by Terry@BMS Click here to enlarge
    Definitely well worn but no signs of major trouble! OEM plugs are the only option.
    Why do you say OEMs are the only option?

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    Click here to enlarge Originally Posted by GRLPWR Click here to enlarge
    Why do you say OEMs are the only option?
    the other plugs out for us show no benefit so far, the people that have ran them have had problems with them and switched back to stock.. i believe AR design are still using stock plugs on there single turbo setup at 20 psi...

  10. #10
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    Click here to enlarge Originally Posted by mazdaspeed6 Click here to enlarge
    the other plugs out for us show no benefit so far, the people that have ran them have had problems with them and switched back to stock.. i believe AR design are still using stock plugs on there single turbo setup at 20 psi...
    I thought they found colder plugs that worked? Guess I was wrong then...
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    Click here to enlarge Originally Posted by CookieCrisp Click here to enlarge
    I thought they found colder plugs that worked? Guess I was wrong then...
    They have some that "work" but if stock work just as well and have less problems reported why not use them Click here to enlarge

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    Did you end up using the special BMW socket? Also, what did you use to torque it? My understanding is the <$50 wrenches are worthless and ~$200 seems like a lot to me unless it's essential.
    Click here to enlarge

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    Click here to enlarge Originally Posted by SSDD Click here to enlarge
    Did you end up using the special BMW socket? Also, what did you use to torque it? My understanding is the <$50 wrenches are worthless and ~$200 seems like a lot to me unless it's essential.
    Yes, thin wall socket. You can probably rent a torque wrench at a local autopart store.

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    Click here to enlarge Originally Posted by alpinedevil335 Click here to enlarge
    Yes, thin wall socket. You can probably rent a torque wrench at a local autopart store.
    So you did torque it then? I've read a few guides that say you can finger tighten it and then wrench it 1/4 turn as an alternative. I'll have to ask Matt@Camber-Toe what he thinks.
    Click here to enlarge

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    I dont use a torque wrench. Then again Ive got years of turning plugs, and you get a 'feel' for how tight they are supposed to be. For a street car its ok, for race applications I torque EVERYTHING, including the plugs.

    Making them too tight in the head especially when the head is hot can cause them to get stuck when the motor cools down..pulling threads out in the process. I did it on an M52 head a few years back when I didnt know any better >_<

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    Im at 10k miles on this set of plugs, i think its time to swap again.

    BUT, i ordered 1 plug from tischer a few weeks back and its not the same as the rest, i think its a NGK, but a single prong. Is this incorrect? all my current ones are triple

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    Click here to enlarge Originally Posted by LostMarine Click here to enlarge
    Im at 10k miles on this set of plugs, i think its time to swap again.

    BUT, i ordered 1 plug from tischer a few weeks back and its not the same as the rest, i think its a NGK, but a single prong. Is this incorrect? all my current ones are triple
    send it back. Dans plugs were one electrode, and they didnt work all that well. Then again more people are showing misfires with the V5 AT now so it could have been that...

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    Yeah, OEM should have three

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    I torqed mine @ 23NM or 17 Ft. Lbs. ... I don't have the "feel" like Matt Click here to enlarge

  20. #20
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    Click here to enlarge Originally Posted by Matt@Camber-Toe Click here to enlarge
    Making them too tight in the head especially when the head is hot can cause them to get stuck when the motor cools down..pulling threads out in the process. I did it on an M52 head a few years back when I didnt know any better >_<
    I was told that not letting the engine cool before changing plugs can also cause pulling the threads out? Is this true?

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    Mine looked about the same after about 20K miles running a tune. I just hand tightened plus slight pressure with bmw socket. Never had an issue and throttle response picked up!
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    I understand the problem with non-OEM plugs and don't plan to use them, but does anyone have any thoughts on these? They were on the ECS site and I was just wondering if they were the same thing non-BMW branded

    BMW OEM $111 for 6
    Bosch Brand $80 for 6

    also anyone have a suggestion for a torque wrench under $150? I'm reading the Husky might be the way to go, but it just seems sketchy to me. Another recommendation was 'AutoCraft' from Autozone and I just plain don't trust that
    Last edited by SSDD; 03-18-2011 at 02:13 PM.
    Click here to enlarge

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    1 out of 1 members liked this post. Yes Reputation No
    Click here to enlarge Originally Posted by SSDD Click here to enlarge
    I understand the problem with non-OEM plugs and don't plan to use them, but does anyone have any thoughts on these? They were on the ECS site and I was just wondering if they were the same thing non-BMW branded

    BMW OEM $111 for 6
    Bosch Brand $80 for 6

    also anyone have a suggestion for a torque wrench under $150? I'm reading the Husky might be the way to go, but it just seems sketchy to me. Another recommendation was 'AutoCraft' from Autozone and I just plain don't trust that
    same exact plugs, P/N is the same, you just dont get the "BMW" on it Click here to enlarge

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    Click here to enlarge Originally Posted by LostMarine Click here to enlarge
    same exact plugs, P/N is the same, you just dont get the "BMW" on it Click here to enlarge
    Excellent, thanks
    Click here to enlarge

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    Craftsman

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