Spark Plug Code Issues
- Kalbarri_baru
- Junior Member
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Spark Plug Code Issues
Heya all,
Just bought some NGK Iridium plugs for my 93 L Series (Ea82, petrol, carby) now the issue is these were freighted to Kalbarri ex Perth and they all have the code BPR6EIX however they have sent three with another number of 6637 underneath and one with 3484, the question are these the same plug.
Research on the NGK site reveals the codes for the plugs (Below)
SUBARU LEONE 1800 AP5 EA82
1986/10 Start date
1989/1 End date
BP6ES 7811
22401AA020 6427
BPR6EVX 6764
BPR6EIX 3484
BPR6EIX-P 2664 4
Now I have always been using the BP6ES with the 7811 code, but the Iridium is showing a code of 3484 to which Perth sent me one of, but do some research on google with (93 Subaru Leone BPR6EIX) and most will show to use code 6637.
Got me stuffed any ideas.
Cheers
WayneO.............................
Just bought some NGK Iridium plugs for my 93 L Series (Ea82, petrol, carby) now the issue is these were freighted to Kalbarri ex Perth and they all have the code BPR6EIX however they have sent three with another number of 6637 underneath and one with 3484, the question are these the same plug.
Research on the NGK site reveals the codes for the plugs (Below)
SUBARU LEONE 1800 AP5 EA82
1986/10 Start date
1989/1 End date
BP6ES 7811
22401AA020 6427
BPR6EVX 6764
BPR6EIX 3484
BPR6EIX-P 2664 4
Now I have always been using the BP6ES with the 7811 code, but the Iridium is showing a code of 3484 to which Perth sent me one of, but do some research on google with (93 Subaru Leone BPR6EIX) and most will show to use code 6637.
Got me stuffed any ideas.
Cheers
WayneO.............................
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- steptoe
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hmmm, never looked for numbers beyond the basic BP6ES etc. The extra bits not just a carton code ? Some Bosch ignition stuff has an extra part letter "C" ? indicating simply a clear plastic bubble packaging rather than in a box. I use BP7ES being a colder plug for hotter conditions for what I am burning nd then if you have an mpfi EA82 the BCP series are great - smaller 5/8" hex body of the plug as the bigger standard often causes the larger plug socket to foul the head casting. How were the plugs invoiced - basic numbers or the extras ?
Wonder if you are reading too much into it...I just went in and had a look http://www.ngk.com.au/spark-plugs-part- ... to-iridium
entered BP6ES and did not get any additional numbers like you are concerned about - just got their recommended iridium number - after reading and accepting the disclaimer
Sometimes the additinal numbers are there if the gap set at factory is above old fashioned norm of 0.8mm such as the BP6ES 11 - they got a 1.1mm factory set gap
Wonder if you are reading too much into it...I just went in and had a look http://www.ngk.com.au/spark-plugs-part- ... to-iridium
entered BP6ES and did not get any additional numbers like you are concerned about - just got their recommended iridium number - after reading and accepting the disclaimer

- Kalbarri_baru
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Gday Steptoe, thanks for that you hit the nail on the head, I just checked the gap difference between the two codes and one is 1.1mm and the other 0.8mm, cheers for that.steptoe wrote:Sometimes the additinal numbers are there if the gap set at factory is above old fashioned norm of 0.8mm such as the BP6ES 11 - they got a 1.1mm factory set gap
4 New NGK IRIDIUM IX Spark Plug BPR6EIX # 6637, Iridium IX Plug, 14mm Thread Size, 19mm (3/4") Reach, 13/16" (20.6mm) Hex Size, Gasket Seat, Resistor, Removable Terminal Nut, JIS Height, Projected Tip, Fine Wire (0.6mm) Iridium Center Electrode, Tapered Cut Ground Electrode, .031" (0.8mm) Gap, Heat Range 6
NGK IRIDIUM IX car spark plug BPR6EIX 3484 for VW
specification
Iridium IX Plug,
Thread Size:14mm
Reach: 19mm (3/4")
Hex Size:5/8" (20.8mm)
Gasket Seat
Resistor
Solid Terminal Nut
Fine Wire :(0.8mm) Iridium Center Electrode
Gap:.043" (1.1mm)
Heat Range :6
Cheers
WayneO..................
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- RSR 555
- Elder Member
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Definitely only use all the same plugs, otherwise you'll do damage to your coil. Larger gaps will cause the coil to work harder and get hotter, thus the chance of failure.
0.3mm doesn't sound much but under compression that gap is increased 10 fold, so best to get that one replaced.
0.3mm doesn't sound much but under compression that gap is increased 10 fold, so best to get that one replaced.
You know you are getting old when the candles on your birthday cake start to cost more than the cake itself.
RSR Performance
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RSR Performance
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- Kalbarri_baru
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Thanks for that Paul, I will have the other one replaced before installing all 4, again your advice has saved me some future heartache, The Ciders are on me when I get down there.RSR 555 wrote:Definitely only use all the same plugs, otherwise you'll do damage to your coil. Larger gaps will cause the coil to work harder and get hotter, thus the chance of failure.
0.3mm doesn't sound much but under compression that gap is increased 10 fold, so best to get that one replaced.
Cheers
WayneO...................
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- RSR 555
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No worries bro.. just make sure you buy the Dicken's brandKalbarri_baru wrote:The Ciders are on me when I get down there.

http://www.youtube.com/watch?v=HQkNqrisok4
You know you are getting old when the candles on your birthday cake start to cost more than the cake itself.
RSR Performance
Home of the 'MURTAYA' in Oz
Subaru Impreza WRX based Sportscar
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Disclaimer: Not my website but hyperlink here to Subaru workshop manuals
RSR Performance
Home of the 'MURTAYA' in Oz
Subaru Impreza WRX based Sportscar
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Disclaimer: Not my website but hyperlink here to Subaru workshop manuals
- Kalbarri_baru
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- RSR 555
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- Posts: 6951
- Joined: Sat Nov 10, 2007 10:42 am
- Location: ATM... stuck in Rockingham
hahaha.. I heard this about youKalbarri_baru wrote:Sorry bloke like I said I am a little short at the moment, so I can't get Dicken's just hafta do with Justin Cider, LOL, hey top clip btw.

You know you are getting old when the candles on your birthday cake start to cost more than the cake itself.
RSR Performance
Home of the 'MURTAYA' in Oz
Subaru Impreza WRX based Sportscar
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Disclaimer: Not my website but hyperlink here to Subaru workshop manuals
RSR Performance
Home of the 'MURTAYA' in Oz
Subaru Impreza WRX based Sportscar
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Disclaimer: Not my website but hyperlink here to Subaru workshop manuals
- Kalbarri_baru
- Junior Member
- Posts: 230
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- RSR 555
- Elder Member
- Posts: 6951
- Joined: Sat Nov 10, 2007 10:42 am
- Location: ATM... stuck in Rockingham
Hahaha.. gold.. thanks for the good laugh blokeKalbarri_baru wrote:Now now, in my defence it is quite cold here at the moment.
You know you are getting old when the candles on your birthday cake start to cost more than the cake itself.
RSR Performance
Home of the 'MURTAYA' in Oz
Subaru Impreza WRX based Sportscar
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Disclaimer: Not my website but hyperlink here to Subaru workshop manuals
RSR Performance
Home of the 'MURTAYA' in Oz
Subaru Impreza WRX based Sportscar
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Disclaimer: Not my website but hyperlink here to Subaru workshop manuals