View Poll Results: Which Spark Plugs?
Voters: 99. You may not vote on this poll
Can we get a 'once-and-for-all' answer on spark plugs?
I ran the OEM platinum plugs until the last change and decided to try iridium...
my fuel economy is a little less than with the platinums (and yes I gapped them correctly)
who knows. and to add...ive actually started driving slower since I'm half a millimeter off the ground
my fuel economy is a little less than with the platinums (and yes I gapped them correctly)
who knows. and to add...ive actually started driving slower since I'm half a millimeter off the ground
Typically for every 50hp to 75hp increase in power over stock, you should run a step colder plug, or if you live in a hot environment, or if you do a lot of racing with the motor in the rpm range. Here's a great write-up about spark plugs:
http://www.carcraft.com/techarticles...ips/index.html
http://www.carcraft.com/techarticles...ips/index.html
^ Thanks for the link
Should I run the One step colder plugs? Engine is nearly 100% OEM it has its timing advanced +2. I do live in south Florida were its hot most of the time.
But since my engine is stock I am looking at stock plugs heh.
Service Manual says
I drive 62 miles highway every time I go to school, which will be 4 times a week in Aug, But I dont know if that counts for extended.
And I redline it sometimes like everyone else
Should I run the One step colder plugs? Engine is nearly 100% OEM it has its timing advanced +2. I do live in south Florida were its hot most of the time.
But since my engine is stock I am looking at stock plugs heh.
Service Manual says
Cold type spark plug is suitable when spark plug knock occurs with standard type spark plug under conditions
such as:
Extended highway driving
Frequent high engine revolution
such as:
Extended highway driving
Frequent high engine revolution
And I redline it sometimes like everyone else
Last edited by thescreensavers; May 10, 2011 at 03:58 PM.
I use 1 step colder NGK copper. But between the 2 listed there, I'd use the Iridiums. Te platinum are just awful all around I feel. For DD cars, it's fine, but anyone who is modding a car in anyway should pull them out ASAP. platinum is not a good conductor and gets really hot, pre-ignition hot way too soon with any performance mods to the car. I had the platinum actually melt off the plug in 2 cylinders and get welded to the cylinder I think. (hope they are on the cylinder at least) just my $0.02
If you are stock you really shouldn't drop down to a lower heat range unless you are getting "spark knock" under normal conditions. It really shouldn't hurt much if you do but if you are not in the proper heat range you may not burn off the excess buildup on the insulator properly.
Not much of a difference - but I stick with NGK for all japanese made vehicles by nature. japan knows japan. its like Bo knows Baseball Bo knows Football. You can't argue with that kind of logic.
Denso is a Japanese company, I'm not sure about NGK...
+1 I agree with keeping the factory gear, if you are running everything OEM then you why look for a replacement. Theres alot of hype over things that make miniscule of a difference. IMO.
