Spark Plugs
09-26-2017, 12:48 PM
#2
4th Gear Member
Join Date: Nov 2009
Location: SoCal
Posts: 1,826
Copper would be best, in terms of conducting current. If you can find copper plugs for your car then that's what I would do - regardless of what MSD says or what coils you're running. If not then stick with the stock platinums. I say all of this not knowing what plug choices are commonly available for your car due to the two-piece plug design; I've only ever come across stock replacement plat's on the couple occasions I've dealt with a 3V Ford engine.
Only difference really between copper, platinum etc is service life. Platinums will typically last at least 50K, while copper are typically good to about 30K. Personally I've seen both last way longer than that before wearing to the point that electrode gap is beyond spec.
Only difference really between copper, platinum etc is service life. Platinums will typically last at least 50K, while copper are typically good to about 30K. Personally I've seen both last way longer than that before wearing to the point that electrode gap is beyond spec.
09-26-2017, 01:51 PM
#3
Gentleman's Relish
Join Date: Feb 2005
Location: AZ
Posts: 13,090
Copper would be best, in terms of conducting current. If you can find copper plugs for your car then that's what I would do - regardless of what MSD says or what coils you're running. If not then stick with the stock platinums. I say all of this not knowing what plug choices are commonly available for your car due to the two-piece plug design; I've only ever come across stock replacement plat's on the couple occasions I've dealt with a 3V Ford engine.
Only difference really between copper, platinum etc is service life. Platinums will typically last at least 50K, while copper are typically good to about 30K. Personally I've seen both last way longer than that before wearing to the point that electrode gap is beyond spec.
Only difference really between copper, platinum etc is service life. Platinums will typically last at least 50K, while copper are typically good to about 30K. Personally I've seen both last way longer than that before wearing to the point that electrode gap is beyond spec.
OP go to Rock Auto and see what they offer for the 09 in terms of plug options.
09-27-2017, 01:04 PM
#4
Thread Starter
Join Date: Aug 2012
Location: California
Posts: 34
Thanks for the information, I went with the Platinums because I could not find anything with out waiting for at least a day for. The iridium Plugs that I had took out had a gap of about .056". When I put them in in 2013 They were gaped a .045. I am thinking that the plugs had about 30,000 -40,000 miles on them. I like the enhanced performance that I felt the MSD COPs provide.
10-05-2017, 11:04 AM
#5
2nd Gear Member
Join Date: Aug 2017
Location: North Carolina
Posts: 489
Spark Plugs
cthuener sorry I got back to you late. Check this out. Confirms Z28KLR info.
Copper Spark Plugs
Copper spark plugs are generally considered to have the best performance of any spark plug type. This is potentially different from what advertising companies suggest, but the other metals are, unfortunately, not as conductive in general as copper is. Platinum and iridium plugs are more likely to overheat, which causes damage to the plug components and can compromise the delivery of the spark to the engine block.
Platinum and Iridium Plugs
Platinum and Iridium plugs perform at a lower level than copper spark plugs, because they are less conductive and they tend to overheat. However, the overall longevity of these two types of metal is better than copper plugs. In reality, copper has the best performance of all three and the worst longevity. Platinum has good longevity and the worst performance. Iridium has good longevity and a performance that is decent, which is why iridium plugs tend to be more expensive than any other type. Still, the difference between these plugs in terms of overall quality is minimal, as there is a trade off for each.
Copper Spark Plugs
Copper spark plugs are generally considered to have the best performance of any spark plug type. This is potentially different from what advertising companies suggest, but the other metals are, unfortunately, not as conductive in general as copper is. Platinum and iridium plugs are more likely to overheat, which causes damage to the plug components and can compromise the delivery of the spark to the engine block.
Platinum and Iridium Plugs
Platinum and Iridium plugs perform at a lower level than copper spark plugs, because they are less conductive and they tend to overheat. However, the overall longevity of these two types of metal is better than copper plugs. In reality, copper has the best performance of all three and the worst longevity. Platinum has good longevity and the worst performance. Iridium has good longevity and a performance that is decent, which is why iridium plugs tend to be more expensive than any other type. Still, the difference between these plugs in terms of overall quality is minimal, as there is a trade off for each.
