Jump to content
SAU Community

Copper vs iridium plugs for modified car?

silviaz

By silviaz,
in General Automotive Discussion

 Share

Recommended Posts

Duncan Grand Master

Duncan

Posted
Posted
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

Kinkstaah Grand Master

Kinkstaah

Posted
Posted

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.

silviaz Experienced

silviaz

Posted
  • Author
Posted
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? 

Dose Pipe Sutututu Grand Master

Dose Pipe Sutututu

Posted
Posted

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

Kinkstaah Grand Master

Kinkstaah

Posted
Posted
29 minutes ago, Duncan said:

well, the truth is I change the spark plugs every time I rebuild the engine, I can't wait until an oil change is due.

Rookie. My iridiums lasted through engine rebuilds....

  • Haha 3
hardsteppa Grand Master

hardsteppa

Posted
Posted

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.

ACTIVE-LSD Collaborator

ACTIVE-LSD

Posted
Posted (edited)

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
burn4005 Proficient

burn4005

Posted
Posted (edited)

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
  • Like 2
  • 4 weeks later...
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.

  • Like 1
  • 1 year later...
TurboTapin Proficient

TurboTapin

Posted
Posted
On 8/3/2023 at 8:34 PM, 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.

 

On 8/30/2023 at 9:46 AM, BK said:

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.

I've been running R7436's with R35 coil packs on my RB28. I was wondering what made you jump over to R7434's with the R35's coil packs?

Thanks, 

  • Like 1
BK Grand Master

BK

Posted
Posted
On 13/10/2024 at 11:53 AM, TurboTapin said:

 

I've been running R7436's with R35 coil packs on my RB28. I was wondering what made you jump over to R7434's with the R35's coil packs?

Thanks, 

The R7434 and R7436 are the same plug except the 36 is a 2.5mm longer overall plug as the insulator 2.5mm longer. The 34 is the BKR length and the 36 is BCPR length, which RB26s use as standard.

I'm still on the 36 because stock is BCPR. I will change to the 34 next time as the 36 tends to jam in hard to the coilpack stalk when used with the full height RB R35 coil pack kits, so the 34 just "fits" a little nicer by comparison.

TurboTapin Proficient

TurboTapin

Posted
Posted
3 hours ago, BK said:

The R7434 and R7436 are the same plug except the 36 is a 2.5mm longer overall plug as the insulator 2.5mm longer. The 34 is the BKR length and the 36 is BCPR length, which RB26s use as standard.

I'm still on the 36 because stock is BCPR. I will change to the 34 next time as the 36 tends to jam in hard to the coilpack stalk when used with the full height RB R35 coil pack kits, so the 34 just "fits" a little nicer by comparison.

Sounds good, thanks for the explanation. I'm not on stock height coils, so I doubt 34's would be an option but I'll measure to confirm. Reason I ask is the 36's have been discontinued since the beginning of 2023. NGK has no direct replacement. I just ordered another spare set. 

Thanks!

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
 Share
Go to topic listing


  • Similar Content

  • Latest Posts

    • sunsetR33
      Blue/grey smoke after idle

      By sunsetR33 · Posted

      Can't you put the pistons to TDC and then do the valve seals? Or will the drop down too far to pull them back up?
    • sunsetR33
      Replacing turbo water line - any recommendations or advice?

      By sunsetR33 · Posted

      One thing I can tell you is, do it properly the first time. If you encounter unexpected problems just let the car sit for a week or two if you have to get some other parts or figure stuff out.  I'd have said go and use as many OEM parts as possible but since you want to change the turbo later on a custom kit is probably the better choice. Since I have no experience with RB25 just compare parts diagrams and images before buying a line kit and it should be easy to see if it has everything you need. Amayama has very good parts diagrams and part number lists, that is what I used a bunch to figure out what I might need. And don't forget to plan ahead and possibly renew other stuff that's easy to get to while you're in there doing the turbo lines. Happy wrenching
    • sunsetR33
      Unpeeling the Orange

      By sunsetR33 · Posted

      Update 4:   Hi all, good news. Engine is running and all the gaskets and seals seem to be working as intended. No leaks so far, even the JB Weld seems to hold. I flushed out the old coolant a few times and put in fresh coolant, not Nissan stuff, I decided to try the Ravenol Protect FL22, they claim it works for a wide variety of JDM cars and the opinions on it by some people were pretty good. And it has the nice poison green color! And man am I glad I bought a coolant system tester earlier this year, vacuum filling works wonders on this engine. I can definitely recommend this to anyone still doing it the old school way. All you need is compressed air supply. Will have to do a small test drive as soon as I can, I removed the gauge cluster again as the tacho needle was still bouncing around a bit but it was much better than before already.  I also found some cracks on all 4 tires inner and outer sidewalls. Apparently these tires should 't be parked on for extended periods or be kept under 0 degrees during storage, which I did not know. Clearly the previous owner didn't look into those details either, he probably bought them just cause they are cool semi-slicks. I'm just wondering how tf I am supposed to reach 30-80 degree tire temperatures on the public road consistenly, these tires were never going to work for my use case. I'll probably order Continental SportContact7 ones as these are the best allround summer tire available right now and I don't think I'll need anything crazier for now. Do let me know if you have experience with various tires and which ones you recommend.
    • sunsetR33
      Unpeeling the Orange

      By sunsetR33 · Posted

      You have no idea how many goddamn boxes I received these past three months haha Most have been put to use by now though, luckily
    • sunsetR33
      Unpeeling the Orange

      By sunsetR33 · Posted

      Not going to pretend I didn't do a bit of junky work this time around, but mostly due to the fact that some things I am not willing to spend days fixing right now, like wiring. I try to do most things properly the first time around.
×
×
  • Create New...