silviaz Posted July 31, 2023 Share Posted July 31, 2023 Hey all, I was wondering for a modified car which spark plugs do you use? My mechanic recommended copper for modified cars but from what I understand they don't last as long? Link to comment Share on other sites More sharing options...
Murray_Calavera Posted July 31, 2023 Share Posted July 31, 2023 BCPR7ES. I change them every 20,000 kms. A search will probably dig up quite a few threads on what spark plugs to use. 2 Link to comment Share on other sites More sharing options...
Duncan Posted July 31, 2023 Share Posted July 31, 2023 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 Link to comment Share on other sites More sharing options...
admS15 Posted July 31, 2023 Share Posted July 31, 2023 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. Link to comment Share on other sites More sharing options...
Kinkstaah Posted August 1, 2023 Share Posted August 1, 2023 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. Link to comment Share on other sites More sharing options...
silviaz Posted August 1, 2023 Author Share Posted August 1, 2023 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. Link to comment Share on other sites More sharing options...
silviaz Posted August 1, 2023 Author Share Posted August 1, 2023 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? Link to comment Share on other sites More sharing options...
Dose Pipe Sutututu Posted August 1, 2023 Share Posted August 1, 2023 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 Link to comment Share on other sites More sharing options...
GTSBoy Posted August 1, 2023 Share Posted August 1, 2023 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! 3 Link to comment Share on other sites More sharing options...
Duncan Posted August 1, 2023 Share Posted August 1, 2023 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. 3 Link to comment Share on other sites More sharing options...
Kinkstaah Posted August 1, 2023 Share Posted August 1, 2023 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.... 3 Link to comment Share on other sites More sharing options...
MBS206 Posted August 1, 2023 Share Posted August 1, 2023 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!!! 1 Link to comment Share on other sites More sharing options...
hardsteppa Posted August 3, 2023 Share Posted August 3, 2023 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. Link to comment Share on other sites More sharing options...
ACTIVE-LSD Posted August 3, 2023 Share Posted August 3, 2023 (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 August 3, 2023 by ACTIVE-LSD Link to comment Share on other sites More sharing options...
burn4005 Posted August 4, 2023 Share Posted August 4, 2023 (edited) I use Denso IK01-24/NGK R7434-8 as I have R35 coils RB26 coils use IQ01-24/NGK R7436-8 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 August 4, 2023 by burn4005 2 Link to comment Share on other sites More sharing options...
BK Posted August 30, 2023 Share Posted August 30, 2023 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 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. 1 Link to comment Share on other sites More sharing options...
TurboTapin Posted 7 hours ago Share Posted 7 hours ago 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 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, 1 Link to comment Share on other sites More sharing options...
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