Spark plugs for 3SGTE, which one is the best? Options

[Red123]

Hello guys.
What spark plugs should I use for 3sgte? Which one is the best?
Currently using NGK Iridium Spark Plug Grade 7, bought from fensport and I'm not very satisfied with them.
http://www.fensport.co.uk/Parts/Model_19/Category_1/1300

Thanks.

[Nial]

Nearly £80 for a set of plugs........no thanks


I would go with copper plugs. Don't get sucked into all the marketing hype around iridium or platinum plugs. Iridium plugs tend to be a little tempremental in 3sgtes, sometimes they work, sometimes they don't. Platinum plugs tend to be more reliable. Both are designed as long life plugs, modern cars have ever increasing gaps between services, these plugs were designed to accommodate the long service intervals. Iridium is something like 6 times less conductive than copper, platinum about the same.

If you want to put in a set of plugs and forget about them for a year or two then go with platinum plugs, if you don't mind changing plugs more frequently then go with the copper cores, neither type are that bad, but iridium plugs or platinum plugs won't give you the magical performance gains that they claim.

if I were you i would buy yourself a nice set of copper core plugs and save some cash.

This post has been edited by Nial: Dec 27, 2012 - 4:48 AM