Mattpioneer Posted May 26, 2008 Share Posted May 26, 2008 was searchin and found some plugs for 6 bucks apiece. would these increase any power, or would i just dump cash for shi7 and look stupid here's the page http://store.summitracing.com/partdetai ... toview=sku Link to comment Share on other sites More sharing options...
HOrnbrod Posted May 26, 2008 Share Posted May 26, 2008 The latter. Stick to the old copper cores, they still work best. Link to comment Share on other sites More sharing options...
Eagle Posted May 26, 2008 Share Posted May 26, 2008 First choice - NGK (the ordinary ones, NOT the platinum tip) Second choice - Champion truck plugs Link to comment Share on other sites More sharing options...
135Boom Posted May 28, 2008 Share Posted May 28, 2008 are the bosch platinum +4 not suppose to be good? I havent had any problems with them? They are the MOPAR upgrade? I think I picked them up at napa for like $6 a piece...... Link to comment Share on other sites More sharing options...
BLHTAZ Posted May 28, 2008 Share Posted May 28, 2008 are the bosch platinum +4 not suppose to be good? I havent had any problems with them? They are the MOPAR upgrade? I think I picked them up at napa for like $6 a piece......Yes...they are good. You are correct in the fact that they are the Mopar Performance upgrade plug as well. I run them in both of my 4.0L Jeeps as well as in my 2002 Ram 4.7L. I have come across some 4.0L engines that don't like Platinums at all for some reason, but that has only been maybe two or three times in 20 years. ;) Link to comment Share on other sites More sharing options...
maddzz1 Posted May 28, 2008 Share Posted May 28, 2008 Is it important to make sure platinum plugs are properly torqued? I had a set in a nissan once and they continually came loose. Link to comment Share on other sites More sharing options...
Mattpioneer Posted June 1, 2008 Author Share Posted June 1, 2008 so bottom line.........more spendy....more performance :USAflag: Link to comment Share on other sites More sharing options...
Pete M Posted June 1, 2008 Share Posted June 1, 2008 I bought the plain-Jane coppers for my trucks and they work great. :D Link to comment Share on other sites More sharing options...
BLHTAZ Posted June 1, 2008 Share Posted June 1, 2008 so bottom line.........more spendy....more performance :USAflag:Not always more performance...but definitely longer life and sometimes a "little" better MPG. Link to comment Share on other sites More sharing options...
HOrnbrod Posted June 1, 2008 Share Posted June 1, 2008 Not always more performance...but definitely longer life and sometimes a "little" better MPG. I get the best mileage and a better idle with the Champion copper cores. I think the heat range is the most important. The stocker 4.0s seem to run best w. the RC12s, but they were too hot for my stroker and I dropped down two heat ranges to RC10s and their color now is spot on. Link to comment Share on other sites More sharing options...
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