can someone tell me the part # for an iridium i step colder

 

The difference is the overall length of the plug.
One plug is a long-reach plug and the other is much shorter. I was running the long reach plug in my car at 10psi. If you want go to sparkplugs.com and type the part number for a picture and description of these plugs.

 

I was hoping you'd explain why you wanted a long reach plug instead of a short one for your setup. Do you think I should get a long reach plug for mine? Turbo pushing 400whp in FL where its very humid.

 

 

lol wow, i started a busy topic, uhmm currently on BKR8E non IX meaning not irridium, they burn on the hotter side and im running rich. Not unsafe, but certainly on the hotter side, ive been warned before about irridium plugs in turbo cars..... wasn't sure of what that was based from.

 

R5672A-8 (NGK)
Racing plug, 14mm, 3/4" reach, 5/8" hex, gasket seat, non-resistor, projected tip, V-power (v-grooved center electrode)

NGK's unique V-Power racing plug provides racing performance at an economical price. Designed to direct the spark to the edge of the electrode where it develops more rapidly, this increases ignitability allowing the engine to burn air/fuel ratios that would otherwise be too lean. Traditional ground electrode. In addition the NGK V-Power racing plugs are constructed with a copper core and triple interior seal.

R5671A-8 (NGK)

Racing plug, 14mm, 3/4" reach, 5/8" hex, gasket seat, non resistor, V-power (v-grooved center electrode)

NGK's unique V-Power racing plug provides racing performance at an economical price. Designed to direct the spark to the edge of the electrode where it develops more rapidly, this increases ignitability allowing the engine to burn air/fuel ratios that would otherwise be too lean. Traditional ground electrode. In addition the NGK V-Power racing plugs are constructed with a copper core and triple interior seal.


ChefJ - They have the same 3/4" reach. Please explain my afformentioned question about what the purpose of a longer 'reach' does. The only difference between these 2 plugs that is listed is that the R5672A-8 has a projected tip, but it doesn't change the reach, which is identical in both plugs.

 

That's what I am using gapped to .028" and they seem to be a very good plug.

 

ChefJ - Still unanswered.

 

I just bought my inline pro ap1 and im wondering, if im usually running 9 psi daily, but i turn it up to 1 bar ( 400 h.p. for me) should i go with 1 step colder or 2? i would say it sees 1 bar maybe twice a month