Sumo Posted August 22, 2003 Share Posted August 22, 2003 Hey all, Just letting you know that NGK copper spark plugs melt if you drive to hard/fast for even just small short bursts. Mine have done 6000kms and they are well and truely stuffed. Putting a set of Iridiums in... But they are not cheap @ $21 a plug Cheers Sumo Link to comment https://www.sau.com.au/forums/topic/23158-copper-spark-plugs/ Share on other sites More sharing options...
wrxhoon Posted August 22, 2003 Share Posted August 22, 2003 u should be able to get them cheaper than $21 around 16- 18 each in sydney Link to comment https://www.sau.com.au/forums/topic/23158-copper-spark-plugs/#findComment-497267 Share on other sites More sharing options...
Duncan Posted August 22, 2003 Share Posted August 22, 2003 hey sumo, how long do a set of platinum or iridum plugs last under the same conditions? Link to comment https://www.sau.com.au/forums/topic/23158-copper-spark-plugs/#findComment-497309 Share on other sites More sharing options...
rs73 Posted August 22, 2003 Share Posted August 22, 2003 which plugs will suit an R33? I heard there are different thread reach & diametre, also heat range. Thread reach like how far the plug will screw into your engine, get the wrong thread reach (too deep), your plug tip might hit your piston? Link to comment https://www.sau.com.au/forums/topic/23158-copper-spark-plugs/#findComment-497378 Share on other sites More sharing options...
wrxhoon Posted August 22, 2003 Share Posted August 22, 2003 i dont have a listing for a rb25 as it wasnt sold here u'll have to ring ngk and ask them ( they dont list in their website rb25's) u r right u ll have to get the right length and heat range , if u give ngk a ring they should be able to tell u . Link to comment https://www.sau.com.au/forums/topic/23158-copper-spark-plugs/#findComment-497391 Share on other sites More sharing options...
rs73 Posted August 22, 2003 Share Posted August 22, 2003 wrxhoon, I checked NGK website, they do have R32 aust delivered RB26DETT plugs there. You think RB25DET uses the exact same plugs with RB26DETT? Link to comment https://www.sau.com.au/forums/topic/23158-copper-spark-plugs/#findComment-497412 Share on other sites More sharing options...
wrxhoon Posted August 22, 2003 Share Posted August 22, 2003 maybe not give them a ring on monday . i know r32 and r33 rb26's use the same though but that doesnt help u . Link to comment https://www.sau.com.au/forums/topic/23158-copper-spark-plugs/#findComment-497450 Share on other sites More sharing options...
paydro Posted August 22, 2003 Share Posted August 22, 2003 ive ben told that th iridum plugs are ratd for 150 000 kms Link to comment https://www.sau.com.au/forums/topic/23158-copper-spark-plugs/#findComment-497455 Share on other sites More sharing options...
Guest RedLineGTR Posted August 22, 2003 Share Posted August 22, 2003 something for you MAx if you read this thread. Link to comment https://www.sau.com.au/forums/topic/23158-copper-spark-plugs/#findComment-497486 Share on other sites More sharing options...
wrxhoon Posted August 22, 2003 Share Posted August 22, 2003 yeah thats true they should last 150 k k's and 100 k k's for platinum Link to comment https://www.sau.com.au/forums/topic/23158-copper-spark-plugs/#findComment-497688 Share on other sites More sharing options...
Grim Posted August 23, 2003 Share Posted August 23, 2003 Well I've run NGK coppers on the track for a whole day of thrashing and they seem to still be running fine for daily driving. Maybe you were running the wrong heat range? I've used Iridiums on my last skyline....they were great but no better than a new set of coppers. I used to pull them out, clean them and put em back in and wonder why I didn't just put a brand new set of $3 coppers in...? Link to comment https://www.sau.com.au/forums/topic/23158-copper-spark-plugs/#findComment-497757 Share on other sites More sharing options...
rs73 Posted August 23, 2003 Share Posted August 23, 2003 what about platinum? Link to comment https://www.sau.com.au/forums/topic/23158-copper-spark-plugs/#findComment-497769 Share on other sites More sharing options...
wrxhoon Posted August 23, 2003 Share Posted August 23, 2003 platinum and iridum plugs are better cause the tip is only .6 mm and u get much better spark . the reson the nickel plugs tip is thicker is cause if they made it that thin it would only last a few k's platinum and especialy iridium are much harder so last a lot longer . typical life , nickel 30k k's , platinum 100 , iridium 150. probably less in a turbo gtr driving it hard less still but still 5 times longer than nickel . Link to comment https://www.sau.com.au/forums/topic/23158-copper-spark-plugs/#findComment-498113 Share on other sites More sharing options...
Sumo Posted August 23, 2003 Author Share Posted August 23, 2003 I used the Copper NGK BCPR6E.... which is a colder plug then is recommended. the 5 heat range is recommended. Duncan: no idea, only put them in yesterday.... But the stalk that the plug sparks too was half melted off and gone (hopefully it didn't hurt any valves... Its prolly stuck in my cat convertor. The Iridium plug im running now is what was recommended for the GTR BCPR6EIX-11. They seem a shit load better, its purring like a ***** now. My car is only for street use, but the thing that ****ed 4 plugs was one run from 0 -180km/h, redlining each gear. Maybe it was running to lean? Im not a mechanic so I cant tell you... But I have a sneaking suspicion thats what it was, because thats the only way it would get hot enough to melt a plug?? Sumo Link to comment https://www.sau.com.au/forums/topic/23158-copper-spark-plugs/#findComment-498454 Share on other sites More sharing options...
Sumo Posted August 23, 2003 Author Share Posted August 23, 2003 P.S. With NGK the GTR and the VLT use the same BCPR prefix so I imagine they would be the same for the RB25. the number is the only thing that changes, but that relates to the heat range. Sumo Link to comment https://www.sau.com.au/forums/topic/23158-copper-spark-plugs/#findComment-498457 Share on other sites More sharing options...
Grim Posted August 24, 2003 Share Posted August 24, 2003 It might be that it's running lean....or what power is your car making? Link to comment https://www.sau.com.au/forums/topic/23158-copper-spark-plugs/#findComment-498508 Share on other sites More sharing options...
rb25 Posted August 24, 2003 Share Posted August 24, 2003 Sumo - your RB25 is running too lean. Link to comment https://www.sau.com.au/forums/topic/23158-copper-spark-plugs/#findComment-498544 Share on other sites More sharing options...
Grim Posted August 24, 2003 Share Posted August 24, 2003 Compare it to the plug analysis here to see how it's running: http://www.ngk.com.au/spark_plug_analysis.htm Link to comment https://www.sau.com.au/forums/topic/23158-copper-spark-plugs/#findComment-498549 Share on other sites More sharing options...
MaXiMuS007 Posted August 24, 2003 Share Posted August 24, 2003 this still hasn't cleared anything up for me! Link to comment https://www.sau.com.au/forums/topic/23158-copper-spark-plugs/#findComment-498550 Share on other sites More sharing options...
Grim Posted August 24, 2003 Share Posted August 24, 2003 Originally posted by MaXiMuS007 this still hasn't cleared anything up for me! huh? WTF do you want? Link to comment https://www.sau.com.au/forums/topic/23158-copper-spark-plugs/#findComment-498558 Share on other sites More sharing options...
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