garygranite Posted December 28, 2016 Share Posted December 28, 2016 Going to change my plugs while fitting plenum, ready for remap. have been searching the forum but cant really find a definite answer !!!! sorry if this has been done all before but have some bosch fr8me copper plugs knocking about and don't want to waste my time fitting them if no good Quote Link to comment Share on other sites More sharing options...
Commander Posted December 28, 2016 Share Posted December 28, 2016 what engine ya got? Quote Link to comment Share on other sites More sharing options...
garygranite Posted December 28, 2016 Author Share Posted December 28, 2016 SORRY .. its a DE !! Quote Link to comment Share on other sites More sharing options...
SHEZZA Posted December 28, 2016 Share Posted December 28, 2016 Here's the oem plugs for the de. http://pages.ebay.com/link/?nav=item.view&alt=web&id=130686785269&globalID=EBAY-GB Quote Link to comment Share on other sites More sharing options...
ZMANALEX Posted December 28, 2016 Share Posted December 28, 2016 Every one has different views on this question. I personally prefer Iridium or Platinum Fit them and forget. Quote Link to comment Share on other sites More sharing options...
coldel Posted December 28, 2016 Share Posted December 28, 2016 Performance is much of a muchness between them all, the only difference is longevity. I generally use Copper as I service my cars on average every 6 months and happily put in 45 mins to change the plugs. Iridiums will not give any performance difference on the road to copper, however as Alex says you want to stick a set in and forget about it for a few years then thats what to go for. Quote Link to comment Share on other sites More sharing options...
Ricey Posted December 28, 2016 Share Posted December 28, 2016 Every one has different views on this question. I personally prefer Iridium or Platinum Fit them and forget. Is there any advantage in your experience of a particular metal that helps avoid pre ignition? Sent from my SM-G925F using Tapatalk Quote Link to comment Share on other sites More sharing options...
Tricky-Ricky Posted December 28, 2016 Share Posted December 28, 2016 (edited) Every one has different views on this question. I personally prefer Iridium or Platinum Fit them and forget. Is there any advantage in your experience of a particular metal that helps avoid pre ignition? Sent from my SM-G925F using Tapatalk Metal type has no influence on pre ignition, its heat range , mixture ,fuel type and ignition timing that will affect pre ignition or det, However i have had experience of certain makes of iridium being rather fragile when it comes to det taking place. All plugs actually have a copper core, its just the electrode outer that affects longevity, and as mentioned they go from so called copper, to iridium. Edited December 28, 2016 by Tricky-Ricky 2 Quote Link to comment Share on other sites More sharing options...
ZMANALEX Posted December 28, 2016 Share Posted December 28, 2016 (edited) Every one has different views on this question. I personally prefer Iridium or Platinum Fit them and forget. Is there any advantage in your experience of a particular metal that helps avoid pre ignition? Sent from my SM-G925F using Tapatalk A metal that does not reach high temperature quickly would always be advantages, however that is not within my level of expertise. Have a read here: https://www.google.co.uk/?gws_rd=ssl#q=why+does+detonation+cause+a+spark+plug+to+melt Edited December 28, 2016 by ZMANALEX Quote Link to comment Share on other sites More sharing options...
garygranite Posted December 28, 2016 Author Share Posted December 28, 2016 well thanks ,but I don't mind changing again if put the bosch in ,,or is that not advisable ? Quote Link to comment Share on other sites More sharing options...
Tricky-Ricky Posted December 28, 2016 Share Posted December 28, 2016 Its the whole plug design that influences its heat range, the amount and location of the electrode in relation to the ceramics is the factor that determines how quickly or slowly it will dissipate heat, thereby establishing its working temperature. 1 Quote Link to comment Share on other sites More sharing options...
garygranite Posted December 28, 2016 Author Share Posted December 28, 2016 well none the wiser ,, as said not really any direct answer.. so will give up and do my own research no offence Quote Link to comment Share on other sites More sharing options...
Strudul Posted December 28, 2016 Share Posted December 28, 2016 In reality, copper has the best performance of all three and the worst longevity. Platinum has good longevity and the worst performance. Iridium has good longevity and a performance that is decent Most copper plugs need to be changed every 20,000 miles or so. Platinum and iridium plugs can often go for twice that before they require changing, but the overall performance will not be as good and you may have to deal with overheating of the plugs. This is potentially not worth the added cost of both platinum and iridium spark plugs, although the decision will depend upon your preference. Source Quote Link to comment Share on other sites More sharing options...
Ricey Posted December 28, 2016 Share Posted December 28, 2016 Every one has different views on this question. I personally prefer Iridium or Platinum Fit them and forget. Is there any advantage in your experience of a particular metal that helps avoid pre ignition? Sent from my SM-G925F using Tapatalk Metal type has no influence on pre ignition, its heat range , mixture ,fuel type and ignition timing that will affect pre ignition or det, However i have had experience of certain makes of iridium being rather fragile when it comes to det taking place. All plugs actually have a copper core, its just the electrode outer that affects longevity, and as mentioned they go from so called copper, to iridium. Ah right. I just remembered reading that one of the causes of pre-ignition can be a superheated (for want of a better word) plug (essentially acting like a hotspot in the chamber). Wondered if certain metal was more thermally resistant or something. Sent from my SM-G925F using Tapatalk Quote Link to comment Share on other sites More sharing options...
Tricky-Ricky Posted December 28, 2016 Share Posted December 28, 2016 (edited) Every one has different views on this question. I personally prefer Iridium or Platinum Fit them and forget. Is there any advantage in your experience of a particular metal that helps avoid pre ignition? Sent from my SM-G925F using Tapatalk Metal type has no influence on pre ignition, its heat range , mixture ,fuel type and ignition timing that will affect pre ignition or det, However i have had experience of certain makes of iridium being rather fragile when it comes to det taking place. All plugs actually have a copper core, its just the electrode outer that affects longevity, and as mentioned they go from so called copper, to iridium. Ah right. I just remembered reading that one of the causes of pre-ignition can be a superheated (for want of a better word) plug (essentially acting like a hotspot in the chamber). Wondered if certain metal was more thermally resistant or something. Sent from my SM-G925F using Tapatalk Yes it can happen if you fit the wrong heat range plugs for the engine perimeters/conditions so the cooler the heat range of the plug, the less chance of detonations occurring, given all other conditions are optimum, but its more common for det to occur from hot spots within the combustion chamber, or the flame front occurring before the ignition point. well none the wiser ,, as said not really any direct answer.. so will give up and do my own research no offence Your original question was answered, IE what plugs to fit, you said you have the correct heat range copper plugs, so these can be fitted no problem, but if you want to not have to change them after 10K miles, then fit platinum, which will last up to 20-30K miles, or if you fit iridium then they can last up to 60K miles, there is no performance gains to be had by fitting precious metal electrode plugs. However if your planning a remap, and have all other mods in place, its quite common to fit one grade colder plugs, std in NGK is 5 so fitting a 6 is fine. Edited December 28, 2016 by Tricky-Ricky Quote Link to comment Share on other sites More sharing options...
evilscorp Posted December 29, 2016 Share Posted December 29, 2016 Platinum are easy to gap compared with iridium but most are preset anyway so not an issue, unless you like to tinker. Quote Link to comment Share on other sites More sharing options...
Willsy1980 Posted December 29, 2016 Share Posted December 29, 2016 Not that it makes any difference, Nissan quoted me for the Platinum plugs (they are the recommended type) when I inquired about a Nissan P3 at the dealers fyi £260 plus the plugs Quote Link to comment Share on other sites More sharing options...
garygranite Posted December 29, 2016 Author Share Posted December 29, 2016 cheers for the help, don't think will go with the copper ones then cant believe only last between 10 or 20 thou !!!! Quote Link to comment Share on other sites More sharing options...
ZMANALEX Posted December 29, 2016 Share Posted December 29, 2016 cheers for the help, don't think will go with the copper ones then cant believe only last between 10 or 20 thou !!!! You won't get 20k out of copper, but should be good for up to 10 if you are lucky. Quote Link to comment Share on other sites More sharing options...
garygranite Posted December 29, 2016 Author Share Posted December 29, 2016 Ok thanks even more reason not to go for them then Quote Link to comment Share on other sites More sharing options...
coldel Posted December 29, 2016 Share Posted December 29, 2016 As above (and discussed at length on quite a few threads previously) copper are fine for 10k miles so if you do low mileage and service regularly its well worth saving 80% of cost for copper. Otherwise go for the others. It really is that simple (also noting about cold grades also) 1 Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.