Spark Plug Question
03-18-2004, 05:44 AM
#1
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Spark Plug Question
Def. a Spark Plug Noob, did a search and didnt find what I was really looking for....but
someone explaing to me why alot of people replace there plugs....I have heard copper, iridum...etc. People say the gapping on the factory plugs suck etc.....
2 Questions...
1, Does it really make a diffrence, if any, and what.
2. If the above answer is true and valid, what plugs then? Copper? Iridum?
someone explaing to me why alot of people replace there plugs....I have heard copper, iridum...etc. People say the gapping on the factory plugs suck etc.....
2 Questions...
1, Does it really make a diffrence, if any, and what.
2. If the above answer is true and valid, what plugs then? Copper? Iridum?
03-18-2004, 05:57 AM
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Answers...
As I am sure I will be corrected if I'm wrong...
My understanding of it is this
Copper plugs are better conducters so less energy is needed to fire them, using a couple of levels of colder plugs, like the ngk bkr6e, is helpful when running a chip or higher boost in general b/c it helps to smooth out the engine (atleast in my experience) and helps to prevent detonation/pinging because heat is drawn away and the plug cools sooner between sparks
I know there is a lot more to this issue, and probably a much clearer way of explaining this, anyway, FWIW, i have run the ngk and now the bosch triple coppers, both have smoothed power delivery, the ngk seemed to be a little more "torquey" at low rpms, but the boschs seem smoother...either plugs are good, others like berus which are probably fine too, none are miracle workers...oh yeah, and change the coppers about every 5,000-7,000 miles
My understanding of it is this
Copper plugs are better conducters so less energy is needed to fire them, using a couple of levels of colder plugs, like the ngk bkr6e, is helpful when running a chip or higher boost in general b/c it helps to smooth out the engine (atleast in my experience) and helps to prevent detonation/pinging because heat is drawn away and the plug cools sooner between sparks
I know there is a lot more to this issue, and probably a much clearer way of explaining this, anyway, FWIW, i have run the ngk and now the bosch triple coppers, both have smoothed power delivery, the ngk seemed to be a little more "torquey" at low rpms, but the boschs seem smoother...either plugs are good, others like berus which are probably fine too, none are miracle workers...oh yeah, and change the coppers about every 5,000-7,000 miles
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03-18-2004, 08:17 AM
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NGK BKR6E and Beru Ultra 14F-6DTU, have both worked fine for me....
BOSCH Super is good too. I have used Denso Irridium in my VW, worked well, but $$$$$. For the A4 1.8t, I think it is; Denso Irridium - K21R
03-18-2004, 09:30 AM
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iridiums seem to be snake oil to me...
copper plugs conduct heat away from the electrode faster/easier/better, which reduces likelihood of pre-detonation. (plug gets so hot that it ignites the mixture before the plug actually fires).
i've found that in warmer houston weather, the coppers smooth out the engine and do a pretty good job of quelling hesitation under high-load WOT.
i've been running NGK BKR6E's for about a year now and they've been great. i change them every 5K when i change the oil.
you can get them at...O'Reilly for sure, Autozone doesn't carry NGK, not sure about Napa or PepBoys. they are about $6 for a set of 4. ask the salesperson for stock number 5952 (or 6962?) can't remember which. it's tougher for them to look it up by "BKR6E"
i've found that in warmer houston weather, the coppers smooth out the engine and do a pretty good job of quelling hesitation under high-load WOT.
i've been running NGK BKR6E's for about a year now and they've been great. i change them every 5K when i change the oil.
you can get them at...O'Reilly for sure, Autozone doesn't carry NGK, not sure about Napa or PepBoys. they are about $6 for a set of 4. ask the salesperson for stock number 5952 (or 6962?) can't remember which. it's tougher for them to look it up by "BKR6E"