What's the diff between bpr7es and 6s

[Dred]

I have NGK iridiums on my tsi, work fine (need tune-up soon tho).

I hear people switching between 6s and 7s depending on their setup.
Any info appreciated.

 

[BacknBlack92ESi]

The NGK BPR6ES come stock. I have the BPR7ES in my 2g. They are a colder spark.

 

[CanadianTSi]

looking at your mods, you should go with the 6's.

 

[talonkev]

The 7's are a hotter spark

 

[djmixerx]

The 7's are a hotter spark

the 7's are not the hotter plugs it the colder ones. the higher the number the colder it is. they make 8's too. good for nitrous and high boost.

 

[4G63 For Me]

the 7's are not the hotter plugs it the colder ones. the higher the number the colder it is. they make 8's too. good for nitrous and high boost.

How high of boost? And is that "nitrous and/or high boost"?

 

[CanadianTSi]

How high of boost? And is that "nitrous and/or high boost"?

I would go 1 range colder at 18psi +

 

[DROOPY209]

if you do mostly highway driving, and are moderately modified, you should go with Bpr7es.

If you do mostly city driving, no real modifications, you should go with the Bpr6es.

 

[Defiant]

Oh, for god's sake.

No, the "sparks" aren't any hotter. That's a function of the ignition system and -to a lesser degree- the electrode gap.

The difference is in the porcelain nose and steel housing design. With NGKs, lower numbers means a longer cooling path, which keeps the temperature of the tip higher. For most street uses, on moderately modified engines, you want BPR6ES plugs at .028" gap. A 7 is liable to load up and run unreliably in most engines' street use.

http://images.google.com/imgres?img...t=1&prev=/images?q=spark+plugs&hl=en&lr=&sa=G
http://www.ngksparkplugs.com/techinfo/spark_plugs/partnumberkey.pdf

Turbo motors are happier with non-iridium plugs. Iridium plugs are meant for engines with service access issues, where long life counts for more than anything else.

 

[karbon]

you want BPR6ES plugs at .0028" gap

28 ten-thousandths of an inch? Holy crap. Go for .028".
I knew what you meant though

 

[Defiant]

28 ten-thousandths of an inch? Holy crap. Go for .028".
I knew what you meant though

Bugger!