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Copper vs iridium plugs for modified car?

silviaz

By silviaz,
in General Automotive Discussion

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Duncan Grand Master

Duncan

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6 hours ago, Murray_Calavera said:

BCPR7ES. I change them every 20,000 kms.

A search will probably dig up quite a few threads on what spark plugs to use.

Exactly the same, I just run coppers and change them every oil change or 2. Iridiums or factory platinums just won't last long enough to make the much higher up front cost make sense

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Kinkstaah Grand Master

Kinkstaah

Posted
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I had iridiums in my RB and they lasted a decade, through hell and back.

You should routinely check them anyway... hence coppers aren't such a bad plan. They can be pretty easy to change in a RB which is why most people are OK with it.

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silviaz Proficient

silviaz

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5 hours ago, Duncan said:

Exactly the same, I just run coppers and change them every oil change or 2. Iridiums or factory platinums just won't last long enough to make the much higher up front cost make sense

Holy crap, that's often.

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silviaz Proficient

silviaz

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3 hours ago, admS15 said:

Another for copper. I didn't listen to the sau gods intially many moons ago and bought platinum. Don't think I even got to 20k KMs before they fouled up.

Is that an issue with the car running rich or lean, or just simply because it's modded it requires more frequent maintenance? 

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Dose Pipe Sutututu Grand Master

Dose Pipe Sutututu

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Plenty of 600kW~700kW RBs from Birrong Automotive just use NGK Copper plugs.

In today's day & age of E85, you could just slap in Iridium plugs and reduce the number of times you change your plugs.

I personally just use copper plugs, and get them for about $3.50 each when there are discounts on Sparesbox or Supercheap Auto, etc. I run them until the car starts to misfire and then bin them. This usually happens after a few years of use though.

I still have 24 plugs on the shelf, whoever buys my car will get all the plugs, 20L of Penrite 10th Tenths, 5x Z442 oil filters, etc.  LOL

 

7 hours ago, Duncan said:

I just run coppers and change them every oil change

Duncan is a Wolf of SAU

image.thumb.png.72aeba3a7f1103d7297ea2addd9276c0.png

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GTSBoy Grand Master

GTSBoy

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6 minutes ago, Dose Pipe Sutututu said:

I still have 24 plugs on the shelf, whoever buys my car will get all the plugs, 20L of Penrite 10th Tenths, 5x Z442 oil filters, etc.  LOL

Geez. It's almost worth buying your shitbox to get that stuff!

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MBS206 Grand Master

MBS206

Posted
Posted

Not an RB, but our EJ25T has been on the same set of plugs for over 100k KMs...

No idea what's in the motor cause screw changing shit on a daily if it's not needed!!!

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hardsteppa Grand Master

hardsteppa

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I used to use coppers, but now use the IRIWAY's  cos yes plugs aren't hard to change on an RB but, still is maint and time, and wear on the aloominum (go USA lol) head threads everytime they're changed. The IRIWAYS have been great, but will foul a little if you putter around too much, so good excuse to give it some full volume regularly and keep them working properly. I replaced the IRIWAYs around 50,000k's? and don't know why I bothered, they still looked fine. Only on my 2nd set now for don't know how many years, but it's alot.

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ACTIVE-LSD Collaborator

ACTIVE-LSD

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I use Denso Iridium Power. $58 for set of 6. heat range 20 (aka 6) right in the middle. shouldn't foul with my brand new coils. for the price alot easier than pulling plugs out on every few services.

Edited by ACTIVE-LSD
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burn4005 Proficient

burn4005

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I use Denso IK01-24/NGK R7434-8 as I have R35 coils

RB26 coils use IQ01-24/NGK R7436-8

Sparkplugs/Coilpacks - 600kw - Forced Induction Performance - SAU Community

they are platinum iridium and make an excellent spark and last a long time as the ground strap is pure platinum

can be had for reasonable money from rhdjapan. they're VERY expensive in australia.

Edited by burn4005
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BK Grand Master

BK

Posted
Posted
On 04/08/2023 at 10:04 AM, burn4005 said:

I use Denso IK01-24/NGK R7434-8 as I have R35 coils

RB26 coils use IQ01-24/NGK R7436-8

Sparkplugs/Coilpacks - 600kw - Forced Induction Performance - SAU Community

they are platinum iridium and make an excellent spark and last a long time as the ground strap is pure platinum

can be had for reasonable money from rhdjapan. they're VERY expensive in australia.

Only plug to use on a 500kw onwards RB mainly because of the Platinum ground electrode, as all other plugs can grenade the nickel ground electrode right off with any detonation quite easily.

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