Spark Plugs
02-03-2012, 02:56 PM
#1
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Spark Plugs
Going to replace the spark plugs in my Cobalt this weekend. Any suggestions? Its A completely stock SS/SC with Borla high flow CAT and muffler.
02-03-2012, 03:04 PM
#2
time and time again i keep hearing ngk brk-07e or something like that. google search something like 'best spark plugs cobaltss.net' or something i'm sure ull find a good thread on here about them. also, i might have a set if ur interested, only used them for 5k miles
02-03-2012, 03:16 PM
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BKR7E are one step colder, which you don't want if you're stock.
Stock plugs are BKR6E if you want to go NGK. I know they aren't gapped correctly for stock, but I couldn't tell you what they should be gapped to.
Stock plugs are BKR6E if you want to go NGK. I know they aren't gapped correctly for stock, but I couldn't tell you what they should be gapped to.
02-07-2012, 01:33 PM
#5
0.042" is too large of a gap for the LSJ.
Gap them to 0.035" if you are stock or lightly modified.
Autolights have been known to give people trouble with these cars.
http://www.crateenginedepot.com/stor...P2630C193.aspx
^ These are what you should have purchased.
02-13-2012, 11:29 AM
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The surging is most likely due to spark blow out.
0.042" is too large of a gap for the LSJ.
Gap them to 0.035" if you are stock or lightly modified.
Autolights have been known to give people trouble with these cars.
http://www.crateenginedepot.com/stor...P2630C193.aspx
^ These are what you should have purchased.
0.042" is too large of a gap for the LSJ.
Gap them to 0.035" if you are stock or lightly modified.
Autolights have been known to give people trouble with these cars.
http://www.crateenginedepot.com/stor...P2630C193.aspx
^ These are what you should have purchased.
02-16-2012, 10:19 AM
#15
When I had my LSJ I bought Autolite's Iridium's, gapped to .032 and never had issues.
I was getting random missfires in my LNF, bought Autolite' plugs and gapped to .032 Missfire gone.
just my .02
I was getting random missfires in my LNF, bought Autolite' plugs and gapped to .032 Missfire gone.
just my .02
03-24-2013, 12:31 PM
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I have an 2006 Cobalt ss sc with CAI stage two i need to replace my plugs and i was looking at the NGK but, was not sure what i needed if i needed 1 colder or 2 colder or what any help would be appreciated thankS! Thats also Just GM stage 2
03-25-2013, 10:31 AM
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I replaced mine last week and used NGK BKR7E on my stock LSJ, I had bought them for when I'm going to install my 2.9" pulley but installed them regardless.
03-25-2013, 10:38 AM
#22
I ran the stock plugs through GMR S3, and just recently dropped down to the BKR7E's once I installed my cams.
You can technically run 1-step colder plugs with GMS2, but "can" fall into issues with fouling due to not producing the power / heat to warrant a colder heat range.
You had the GMS2 hardware (pulley, injectors, etc.) but were running a custom tune werent you? Prob making a bit more power than what GM's tune provides.
03-25-2013, 12:02 PM
#23
GMS2 was designed with the stock plugs thus why I always recommend them to members asking which plug to get.
I ran the stock plugs through GMR S3, and just recently dropped down to the BKR7E's once I installed my cams.
You can technically run 1-step colder plugs with GMS2, but "can" fall into issues with fouling due to not producing the power / heat to warrant a colder heat range.
You had the GMS2 hardware (pulley, injectors, etc.) but were running a custom tune werent you? Prob making a bit more power than what GM's tune provides.
I ran the stock plugs through GMR S3, and just recently dropped down to the BKR7E's once I installed my cams.
You can technically run 1-step colder plugs with GMS2, but "can" fall into issues with fouling due to not producing the power / heat to warrant a colder heat range.
You had the GMS2 hardware (pulley, injectors, etc.) but were running a custom tune werent you? Prob making a bit more power than what GM's tune provides.
05-09-2019, 10:54 AM
#24
Spark plugs?
I see the stock spark plugs if chosen as NGK are the BKR6E with a heat range of 6 and 1 step colder are the BKR7E with heat range of 7 and 2 steps colder are the BKR8E with heat range of 8. And rule of thumb for every 75 to 100 HP drop 1 step colder when doin internal engine work such as cams and so forth. But what about the iridiums. The BKR7EIX or the BKR8EIX? I have a zzp 2.7 pulley, cold air intake, zzp headers with full exhaust,zzp dual bypass, and zzp larger heat exchanger (radiator). Any suggestions?
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