Neil-NA Posted October 6, 2009 Share Posted October 6, 2009 I bought some plugs that were 'supposed' to be for an NA, now they have turned up they are NGK BKR6EIX-11, i know the NA should use a 5 not a 6, will this make a huge difference? Stupid of me i know but i had to ask. Quote Link to comment Share on other sites More sharing options...
pedrosixfour Posted October 6, 2009 Share Posted October 6, 2009 Hi Neil, I was hoping that someone in the know would have stepped up to the plate and answered this question by now but nobody is interested in our lowly NA's! Anyway I am running the same plugs in my car, a 6 instead of a 5, which I believe are designed for the standard TT supra. To the best of my knowledge these 6's are classed as a colder plug which means they draw more heat from the cylinders and by doing so aid in the cooling of the combustion chamber. My reason for doing this is because my NA is a track car and as the engine would be running at high revs for extended periods I thought a little extra help in the cooling department wouldn't be a bad idea and might prevent certain problems arising. However plugs are designed to work at an optimun temperature, to promote self-cleaning, and if they fail to reach this range, due to being too cold a plug for that particular engine, power loss and other more serious problem may occur. I guess if you don't notice any issues with the car then you are still operating within the permitted boundaries. I know my engine is still running sweet and I give it dog's abuse whenever I get the opportunity! Hope this helps, has anyone else got something a little more definitive to add?? Quote Link to comment Share on other sites More sharing options...
nigelboyne Posted October 6, 2009 Share Posted October 6, 2009 i ran ik22 which are one stage cooler then normal for my tt when it was standard ran fine if that helps. can see any problems Quote Link to comment Share on other sites More sharing options...
Neil-NA Posted October 6, 2009 Author Share Posted October 6, 2009 Hi Neil, I was hoping that someone in the know would have stepped up to the plate and answered this question by now but nobody is interested in our lowly NA's! Anyway I am running the same plugs in my car, a 6 instead of a 5, which I believe are designed for the standard TT supra. To the best of my knowledge these 6's are classed as a colder plug which means they draw more heat from the cylinders and by doing so aid in the cooling of the combustion chamber. My reason for doing this is because my NA is a track car and as the engine would be running at high revs for extended periods I thought a little extra help in the cooling department wouldn't be a bad idea and might prevent certain problems arising. However plugs are designed to work at an optimun temperature, to promote self-cleaning, and if they fail to reach this range, due to being too cold a plug for that particular engine, power loss and other more serious problem may occur. I guess if you don't notice any issues with the car then you are still operating within the permitted boundaries. I know my engine is still running sweet and I give it dog's abuse whenever I get the opportunity! Hope this helps, has anyone else got something a little more definitive to add?? Cheers for the info, i read up on the problem that they might foul up as they dont get up to heat, but im hoping my 'spirited driving' will help with that, i will try and see if i get any misfires or starting probs. Thanks for the help guys. Quote Link to comment Share on other sites More sharing options...
pedrosixfour Posted October 6, 2009 Share Posted October 6, 2009 Oh keep 'er lit boy! Words to live (and die) by. Quote Link to comment Share on other sites More sharing options...
marbleapple Posted October 6, 2009 Share Posted October 6, 2009 I can't help with this really but if it were me I would simply get hold of the correct plugs and put those in. I prefer that things are 'right' just for my state of mind!. Quote Link to comment Share on other sites More sharing options...
Kirk Posted October 6, 2009 Share Posted October 6, 2009 ill second that mate... dont want to have it coming back because the plugs arnt meant for the car not to worry though asoon as your sorted ill get straight on it Quote Link to comment Share on other sites More sharing options...
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