SolaraGuy.com

NGK BKR7EIX-11 or Denso IK22


Im currently running the NGK's but dont know if i should give the IK22's a try in a few weeks...or just go with the same part # NGKs.


Input would be appreciated.


Also, if you are boosted, and use another brand/part #, speak up!

I'm using the NGK's listed above and they've been great. I'm a fan of Denso, but I don't feel their extra cost is worth it.

i,m running the denso's. work real nice.

second set of Denso's for me...replaced the first set since I did a SC oil change....I did notice however that two of the prongs from the plugs were broken off some how, either by load or just wear and tear. never had a problem with them tho

**it was time for a change tho, around 60k since I had them replaced.

I've always used the stock Platinum (..ngk bkr6ekpb11dual tip plugs)..yep. No problems and they last.
Found this..interesting. Anyway...if you go Iridium single (like most here except me ), then you might want to look at Platinum on the ground electrode as pointed out here.

http://wiki.answers.com/Q/Which_spark_plug:_denso_pk20tr11_or_ngk_bkr6ekpb11_ngk_is_almost_twice_the_price_of_denso%3B_both_are_listed_in_the_manual_so_is_it_worth_the_difference

Lifted from a post on ToyotaNation. Does yours use the OEM twin ground platinum electrode spark plugs? They are specifically used for the later model Gen 4s (camry) with twin coil packs and distributorless. These use a waste spark ignition, therefore the plugs fire twice during a 4 stroke cycle. If you use a single ground electrode, it will severely shorten the life of the plug. e.g. 6,000rpm on your camry engine will be like running 12,000rpm on another car, since the plug fires twice as often. You can also try double platinum plugs, i.e. plugs with a platinum chip also on the ground electrode. What happens in waste spark ignition is that 1 coil pack fires 2 spark plugs simultaneously, e.g. cylinder 1 and cylinder 4. So while one spark plug is firing normally, spark jumps from center electrode to ground electrode, the other spark plug is firing in reverse, i.e. from ground electrode to center electrode, therefore there is high wear on the ground electrode, this is where the platinum chip on the ground electrode gives longevity. Plugs like Denso Iridium SK20R11 and VK20 also have a platinum chip on the ground electrode. NGK Iridium IX and Denso IK20 dont.

More:

decided to contact NGK on this. Here's their response and I believe
it to be accurate.

------------------------------------------------

Hello,

BKR6EIX-11 is a plug designed for improved performance and
ignitability.
Because of the plug's fine wire center firing electrode, it should help
fire the engine easier in cold start situations. Because of the design
of the plug you may also see improved efficiency and performance. The
Iridium IX plug would however, require more frequent replacement than
the OE BKR6EKPB-11 which is a multiple ground electrode platinum plug.
The multiple ground electrodes will allow the plug to wear more evenly,
prolonging service intervals.

Kristopher Zdral
Technical Support Representative
NGK Spark Plugs (U.S.A.), INC.


I don't like pulling my SC every 20K mi to change the plugs

My Dyno #s looked pretty damn good with these too.

You can always run the NGK BKR6EQUP if you want a multiple-cathode plug that is still iridium. I know Jim@Foreign Affairs ran these in his solara.

Here's the original link:
http://www.solaraguy.com/viewtopic.php? ... t=bkr6equp

hmm....i dont know how well platinum will hold up with all the extra internal heat the SC will create.

akora12 wrote:You can always run the NGK BKR6EQUP if you want a multiple-cathode plug that is still iridium. I know Jim@Foreign Affairs ran these in his solara.

Here's the original link:
http://www.solaraguy.com/viewtopic.php? ... t=bkr6equp

doesnt he state that its a platinum plug?



Shorty Spark Plug No
Resistor Yes
Manufacturer Heat Range 6
Electrode Core Material Copper
Electrode Tip Material Iridium/Platinum
Insulator Type Non-projected
Spark Plug Thread Size 14mm
Spark Plug Reach 0.750 in.
Spark Plug Seat Style Gasket
Wrench Diameter 5/8 in.
Ground Strap Quantity Four
NGK Part Number BKR6EQUP

^Ah yes, that is a platinum plug.

akora, look what i found on NGK's site.


damnit Jim...lol.

Therefore, a multi-ground plug will not perform any better and may actually perform worse than a traditional plug, unless the engine is designed for a multiple ground plug.

im running ngk uridium and so far so good. Still tuning so dont know how they will last but hear good things about them.

Driver2g wrote:im running ngk uridium and so far so good. Still tuning so dont know how they will last but hear good things about them.

They're good plugs...you just have to swap them out 2/3X more frequently. I elected to possibly sacrifice a small amount of performance (that's debatable though) for not having to pull my SC every 20-30K mi.
No one has shown me that Iridiums increase performance over stock...and no one ever will. That's because if there is any performance increase, it's really not measureable.

akora12 wrote:You can always run the NGK BKR6EQUP if you want a multiple-cathode plug that is still iridium. I know Jim@Foreign Affairs ran these in his solara.

Here's the original link:
http://www.solaraguy.com/viewtopic.php? ... t=bkr6equp

From that thread:

http://www.solaraguy.com/viewtopic.php?t=25292&highlight=bkr6equp

Posted: Wed May 03, 2006 9:36 am Post subject:

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Thanks for the reply. TRD sent me a response to the question stating that they recommend the OEM plugs with the S/C.

If I was smart I would have replaced them when I installed the blower 3 months ago.

Shawn

Magnuson recommends stock plugs too.

yea, im pretty sure they are also guessing that you are at stock boost psi.