Spark Plug info

[Macca]

Have not seem much info on plug around so here it is.

SPARK PLUG SPECIFICATIONS

Ralliart Colt 4G15 NGK Plug Part No IZFR6C-K Or from NGK Web Site its ILZFR6C-K (there is an "L")


Spark Plug Gap 0.7mm − 0.8mm Limit 0.95 mm

Part number Decode as follows

I = Iridium
L = Long Thread
Z = Protruding Type
F = 14mm diameter x19mm thread dimention and 16mm heax head
R= Resistive
6 = heat rating (9= cold 4=hot)
C = Suffex code ??
-K = should be the plug gap but doesnt line up lol

Laser Iridium


Iridium tip


Platinum pad/chip


100,000 kms

http://www.ngk.com.au/images/IFR%20plug%20type.jpg


Extremely long service life. Improved high ignitability due to fine tipped centre electrode

an eBay link http://cgi.ebay.com.au/NGK-IRIDIUM-PLUGS-ILZFR6C-K-COLT-4A91-4G15T-/180412248776?cmd=ViewItem&pt=AU_Car_Parts_Accessories&hash=item2a016872c8

[fauxpas]

Is that the stock plug macca?

[Zadok]

Lol, Macca you are such a nerd :D. Thanks for the info, I'm sure a few of us will be looking for just such information in the not too distant future as more colts clock up the km's.

[Macca]

Is that the stock plug macca?

Yes

IZFR6C-K is taken from the workshop manual but ever where else includng the NKG website add the L in the part number, and also note on the ebay link the plug box is a mitsubishi genuine part box stating both NGK part numbers and mitsubishi numbers

[Macca]

Info on HSK plug from JDM Blog

Needs more info on weather its a fit for 4g15

http://translate.googleusercontent.com/translate_c?hl=en&langpair=auto|en&u=http://minkara.carview.co.jp/userid/415577/car/327081/2419541/parts.aspx&rurl=translate.google.com&twu=1&usg=ALkJrhg5k3f1TZaklUjZmcHtGgBZ2RPGMA

[steel]

There are limits to machine translation.

そろそろ走行距離が２００００㎞なのと、１度サーキットを走っているので、念のため交換しまし た。
"Having clocked up 20000km and also tracked the car once, I have changed [the spark plugs] just to be on the safe side."

With the boost, change the value of the seventh heat.ブーストアップに伴い、熱価７番に変更。
"[The spark plugs] have been changed to heat rating 7, along with the increased boost."

Type plug, iridium plugs as genuine, long reach type.プラグの種類は、純正と同じイリジウムプラグの、ロングリーチタイプ。
"[The spark plugs] are a long reach type of the same iridium type as stock."

Comparison images are genuine.画像は純正との比較です。
"The image is a comparison with stock."

♪ I feel the engine was feeling fine気持ちエンジンが元気になった感じがします♪
"It feels like the engine has perked up."

Price duty 4.価格は４本分。
"The price is for 4 units."

[lovecolt]

There are limits to machine translation.

そろそろ走行距離が２００００㎞なのと、１度サーキットを走っているので、念のため交換しまし た。
"Having clocked up 20000km and also tracked the car once, I have changed [the spark plugs] just to be on the safe side."

With the boost, change the value of the seventh heat.ブーストアップに伴い、熱価７番に変更。
"[The spark plugs] have been changed to heat rating 7, along with the increased boost."

Type plug, iridium plugs as genuine, long reach type.プラグの種類は、純正と同じイリジウムプラグの、ロングリーチタイプ。
"[The spark plugs] are a long reach type of the same iridium type as stock."

Comparison images are genuine.画像は純正との比較です。
"The image is a comparison with stock."

♪ I feel the engine was feeling fine気持ちエンジンが元気になった感じがします♪
"It feels like the engine has perked up."

Price duty 4.価格は４本分。
"The price is for 4 units."

But the stock sparkies are of heat range 7 if not wrong.

[steel]

Or even 6, according to the original post. It doesn't make sense to me that he would switch over to a spark plug with a colder heat rating. No idea what this "long reach type" means either. Is there an advantage to the spark being started further into the combustion chamber?

[Macca]

Long reach is a generic spark plug term

you see in my first post they stock ones are long reach. Just a fitment thing. there is a fair distance from the head to chamber.

[Ayu452]

i have replaced mine sparkz at 60,000km...they are ILZFR6C-K, that is what i pulled out of the block...and replaced them with...think they were just under 100$ from auto one...went to 5 shops no one stocks em...
auto one had em in stock because they had someone come in wit an rcolt b4..so they kept one on the shelf

[Zadok]

Am I correct in believing that these spark plugs are not needed to be replaced till 100,000 km? If it's of any benefit to change them earlier I'd be keen to do it though.

[Ayu452]

i like to stagger my replacement parts...so i don't get one big lump sum at 100k km...
plus our car runs very rich...so i thought i replace em earlier...i gave them a clean at 50,000km...
there is no hurt changin it earlier...its only a guideline service manual...i hope to keep the car along time, possibly turn it into a full track car, if i got $$...so i trying to look after it best i can

[Macca]

Just called my Local dealer

Quoted $25 each for 1822A005

Screw that

Just bought this!

http://cgi.ebay.com.au/NGK-IRIDIUM-PLUGS-ILZFR6C-K-COLT-4A91-4G15T-/180518674327?cmd=ViewItem&pt=AU_Car_Parts_Accessories&hash=item2a07c05f97

[fauxpas]

Are these the ones for our colt? Linkie... (http://cgi.ebay.com.au/NGK-IRIDIUM-SPARK-PLUG-LZFR6AI-LZFR6A-I-Stock-No-3656-/290308541816?pt=UK_CarsParts_Vehicles_CarParts_SM&hash=item4397bccd78#ht_2282wt_905) That's 41 GBP delivered...

And how hard/easy are they to swap out? Any tricks?

[Macca]

Nope thats not them.

Part number for them is at the start of this thread.

Tricks they are easy as, Remove coil, get spark plug socket with the rubber in the end to hold the plug, and a fuck off long extension

[odysseyesm]

Should only need to replace Iridium plugs at 100,000, won't hurt to replace earlier though.

The heat range of a plug relates to how much heat is held in the plug tip to aid combustion. If it's a slow revving motor then the plugs tend to have a 'hotter' rating.
If it's a fast revving turbo or two stroke then the plugs will have a 'colder' rating, meaning that they transfer more heat into the head, lower the temp of the plug tip and reduce the likelyhood of melting a hole in the piston or knocking from pre-ignition of the fuel mixture like a diesel.
In a fourstroke car engine you'd really need to be racing the car all the time to worry about that I reckon.

That's what I remember from my bike racing days anyways....

[black_ice]

Hey guys found this link on ebay but part numbers dont match up with the ones posted in the first/subsequent threads (IZFR6C-K)...will they fit??

http://www.ebay.com.au/itm/NGK-ILZFR5B-Iridium-Spark-Plugs-COLT-4G15-MIVEC-/180638157290?pt=AU_Car_Parts_Accessories&hash=item2a0edf89ea

Or should I go with the safe bet? (although almost double the price)

http://www.ebay.com.au/itm/360145833433?ssPageName=STRK:MEWAX:IT&_trksid=p3984.m1423.l2649

[Fizz]

black ice....i think the second link is the one you need.

anyway, was looking around for other alternative spark plugs to suit the rcolt, and came across the Denso Iridium (YKH20Y). Has anyone used this specific plug for their colt before? it was quite difficult to get the suitable part number, but I managed to find this: http://www.globaldenso.com/cgi-bin/global/plug/euro/4w/4w-plug.cgi?action=search&filename=4w-58.txt

the gap seems correct at 0.8mm too. ebay has them for about AUD$22 each.

[orixy]

Hi guys, I have been using NGK Iridium LFR7AIX which has similar specs as the stock ILZFR6 but is colder at 7 heat range. Changed em every 40,000km. Googling shows that it is a stock part no. for WRX/STI/Legacy so should be pretty easy to find from dealers.

[black_ice]

Thanks Fizz...I bought the 'second one' already...

[Fizz]

Thanks Fizz...I bought the 'second one' already...

Did you get it from that seller? how long did it take for it to arrive?

[black_ice]

Yup I did..bought it on the 30th of Mar and still waiting for it to arrive..I'll let you know when I get it...

[Fizz]

alright. Repco quoted me $28 per plug....so buying from ebay will save me about $20 in total.

[black_ice]

Not bad..I got quoted in the early $30 from repco and supercheap...