cookci Posted September 17, 2007 Share Posted September 17, 2007 Is it worth spending double the money on a spark plug. I have the choice of super 4's or Iridium plugs Link to comment Share on other sites More sharing options...
Alex Posted September 17, 2007 Share Posted September 17, 2007 What's a Super 4? NGK BKR7E's....just use them... Link to comment Share on other sites More sharing options...
Tricky-Ricky Posted September 17, 2007 Share Posted September 17, 2007 Does iridium really make that much difference? Short answer, NO! Link to comment Share on other sites More sharing options...
cookci Posted September 17, 2007 Author Share Posted September 17, 2007 So basically its just a money making scheme then? Link to comment Share on other sites More sharing options...
Tricky-Ricky Posted September 17, 2007 Share Posted September 17, 2007 So basically its just a money making scheme then? Iridium are just designed to last longer. Link to comment Share on other sites More sharing options...
cookci Posted September 17, 2007 Author Share Posted September 17, 2007 ah ok thanks for that Super 4's are bosch plugs with four electrodes lol Link to comment Share on other sites More sharing options...
Alex Posted September 17, 2007 Share Posted September 17, 2007 So basically its just a money making scheme then? No. That's not correct. Read the FAQ. Link to comment Share on other sites More sharing options...
Chris Wilson Posted September 17, 2007 Share Posted September 17, 2007 Many disagree with me, but if someone asks me to fit copper plugs to a 2JZ-GTE they sign a disclaimer before I do it. Platinum or iridium tipped, every time, they have a much wider heat range. I dislike Denso, too, I have used NGK plugs in everything including serious race engines, foe 15 years plus, and never had a single plug issue if the grades are right. If the difference in cost of a set of plugs is an issue, maybe a Supra isn't the car to run Link to comment Share on other sites More sharing options...
Tricky-Ricky Posted September 17, 2007 Share Posted September 17, 2007 How can a designated heat range plug, have a much wider heat range! surly they are both designed to perform optimally over a set range, no matter what there made of?? Link to comment Share on other sites More sharing options...
Guest Chumpalot Posted September 17, 2007 Share Posted September 17, 2007 I thought the issue was always that if a plug was to fail the coppers would cause less damage as they just melt. Or perhaps I'm wrong. Link to comment Share on other sites More sharing options...
Chris Wilson Posted September 17, 2007 Share Posted September 17, 2007 I thought the issue was always that if a plug was to fail the coppers would cause less damage as they just melt. Or perhaps I'm wrong. Molten *ANYium* in the the combustion chamber is very bad news! Precious metal tipped plugs will fire an incorrect mixture without fouling (and God knows there are enough 2JZ-GTE engines around at the moment with incorrect mixtures... ), and will exceed their recommended tip temps with less likelihood of failure than a copper plug. Once you start talking of what molten plug tip is less harmful to the engine is the time i get my coat .... , you are into something similar to discussing whether you'd rather be shot or stabbed. Link to comment Share on other sites More sharing options...
Guest Chumpalot Posted September 17, 2007 Share Posted September 17, 2007 Molten *ANYium* in the the combustion chamber is very bad news! Precious metal tipped plugs will fire an incorrect mixture without fouling (and God knows there are enough 2JZ-GTE engines around at the moment with incorrect mixtures... ), and will exceed their recommended tip temps with less likelihood of failure than a copper plug. Once you start talking of what molten plug tip is less harmful to the engine is the time i get my coat .... , you are into something similar to discussing whether you'd rather be shot or stabbed. I was under the impression copper simply melted and would be less harmful than little shards of Iridium. However, I never did really get the hang of science at school. Point taken PS. Depends where I was stabbed/shot. Link to comment Share on other sites More sharing options...
Tricky-Ricky Posted September 17, 2007 Share Posted September 17, 2007 I thought the issue was always that if a plug was to fail the coppers would cause less damage as they just melt. Or perhaps I'm wrong. Thats pretty much it, iridiums and in particular Denso, are very prone to the insulation cracking and falling apart,when subject to detonation, because the electrodes are much harder and don't melt easy. i know which i would rather have. Link to comment Share on other sites More sharing options...
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