Garth Posted July 20, 2013 Share Posted July 20, 2013 Getting a set of spark plugs as spares and local guy suggested Iridium. Done a little research on the web, but still not convinced - spoken to a few people who say the Denso Iridium are better than the NGK version and then others who say do not go near Denso. I am confused! Link to comment Share on other sites More sharing options...
Mark Durrant Posted July 20, 2013 Share Posted July 20, 2013 IMHO iridium are a waste of money and I would stick with the standard NGK plug a view shared by Steve G at Track n Road Link to comment Share on other sites More sharing options...
john milner Posted July 20, 2013 Share Posted July 20, 2013 A decent spark is a decent spark. An even better spark adds nothing unless you have an ignition problem. After going for a name brand the only thing I might consider is how long a plug lasts. Link to comment Share on other sites More sharing options...
Paul Deslandes Posted July 20, 2013 Share Posted July 20, 2013 totally agree with the above. Iridium plugs are really intended for modern tin-tops with long service intervals - not usually an issue for our cars. Link to comment Share on other sites More sharing options...
johnnyseven Posted July 20, 2013 Share Posted July 20, 2013 I use nology plugs as I find they don't foul and are easy to read when making adjustments to the carbs - ie they seem to change colour quickly when adjusting the mixture- where as the ngk tended to foul--- just my view Link to comment Share on other sites More sharing options...
Martin J Posted July 20, 2013 Share Posted July 20, 2013 Just bought a set of NGK's for my sigma from halfords for £16. You can't argue at £4 each. Link to comment Share on other sites More sharing options...
diggerman Posted July 21, 2013 Share Posted July 21, 2013 Sigma 150 SV. Have been using the standard Ford plugs since new and just changed to cheapo NGK's. The difference is amazing! Car seems smoother, more responsive and even more Sigma crackle. Peter Link to comment Share on other sites More sharing options...
myothercarsa2cv Posted July 21, 2013 Share Posted July 21, 2013 I used Iridium plugs in the 2CV for a year or so. Worked alright, went bang a few thousand times a minute most of the time Waste of a few quid, really. If they really were that good, they'd be standard. Link to comment Share on other sites More sharing options...
Steve-B Posted July 21, 2013 Share Posted July 21, 2013 I got a set of NGK's for £8 at our local stockist in High Wycombe. Never seen the point in fancy smancy plugs for a Se7en….always put new ones in each new year at that price cheap... Link to comment Share on other sites More sharing options...
Birkin S3 ZA. Posted July 21, 2013 Share Posted July 21, 2013 They do work well in two strokes, the hotter fine point on the plugs fouls less than the normal plugs. I run the NGK PLTR6A 10 in my zetec and they work Ok. Link to comment Share on other sites More sharing options...
6speedmanual Posted July 21, 2013 Share Posted July 21, 2013 Also for LPG where the spark needs a higher voltage to jump the gap when filled with LPG/air mixture than petrol. The reason for the fancy metals is that without them, the sharp electrode point would erode too fast. For a 7, boggo plugs are good. Especially as they probably in most cases get changed long before expired. NGK is a brand I trust, having had a quality issue with a Champion and a durability issue with a Bosch, but that was in the '80s. Peter Link to comment Share on other sites More sharing options...
Garth Posted July 21, 2013 Author Share Posted July 21, 2013 Thanks for all the comments - I will stick with my NGK plugs! Will probably go for a slightly colder plug (NGK 6 rather than 5). Link to comment Share on other sites More sharing options...
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