dunno if anyone follows this any more, i was looking to find the ngk part # for the plugs i wanted ( found it )

anyway,while back i was looking to get an ecu from an 04 bb, and was told then if i did, be sure to change plugs from 0.032 gap to a 0.44 gap to account for the single o2 sensor that the bb uses, as opposed to the 2 o2 sensors in the us XB.
anyone quantify this?

 

Def use the .044 gap. The coils make plenty of power to fire them no problem. Mine ran better when I opened up the gaps.

 

i just buy the same brand,..

 

Update since install:

Car runs smoother, but little if any difference in mileage. Occasional hesitation gone now. Should be good until 90k now! My plugs are gapped at .044.

 

Mine are going in at 20k about 445 more miles - wish I baught the -11 versions since they are gapped at 0.044" already but . . . just a little bending I an should be good.

 

Just be VERY careful. These suckers are fragile.

 

The outer electrode is more fragile than usual? Could it be the chrome or Nickel plating making it too stiff? I know NOT to pry against the center electrode. I almost want to grind the sharp edges off the outer electrodes to make them smooth. Guess I will gap them before I start working on the engine so if one breaks I can get another before I start taking things apart.

 

^^ Center electrode is fragile. Also, sharp edges are better for spark propagation.

I had to gap mine also. I was extra careful not to accidentally contact the center electrode while prying the outer. Its very close!

 

Has nothing to do with the outter electrode any sort of plating on it. The center electrode is as thick as a pin so all the adjustments must be done without touching it. Except for checking the gap. Even that scared the heck outta me till they were installed back in.
People should just buy the bB plugs and not have to go through this. Why do they even sell the other part # with the stock gap?
That's funny Robert. We posted almost at the same time on the same topic. Scary!

 

The sharp points only count for the center electrode where the e-field builds up to start the arc not the outer electrode. Seems to me they cut the edges at 45 degrees to make it less square to expose the spark more and making it round may help even more.
Yeah I wasn't going to even touch the center electrode when I regap - just grab the outer electrode and bend it a little at a time.

 

Well, I'm Japanese, but I'm not a spark plug engineer at a gigantic, well established spark plug manufacturing company. If they could better the plug by just modifying the profile of the outer electrode, I believe it would just come that way. I am using it as they designed it.

 

^^^X2 except the Japanese part.

 

I'm thinking in reality making it round production wise is a cost factor but it presents a sharp heating point well into the combustion area for a hot spot to form. Also wondering if you guys found a coil on each plug or a coil spanning across two plugs. Seems the Jap bikes cheat on the coils and fire on the top of the exhaust stroke and compression stroke of two cylinders with the same coil according to my mechanic brother. Love prooooovvvvving him wrong - haven't gotten into the heated garage yet to take the engine cover off . . . next week ... 20k miles plug change approaches!

 

chrysler does this same thing with their 4 cylinder engines

 

does anyone have a link to where they bought theirs?

 

I found em here on ebay for $30 shipped.
http://cgi.ebay.com/ebaymotors/4-NGK...em130197865833

 

Will the larger .44 gap and increased air from say an intake cause too lean of a mixture down the road?

I bought the .44 but am worried about this

 

^^nope, the ecu compensates for the increased air.

 

Doug is right. The ,044 gap will just allow a hotter spark and give you a more efficient burn inside the cylinders. Less unburned fuel out the exhaust translates to more power and better mpgs. No worries at all.

 

Ok, Since an intake would not cause a leaner mix

(sorry for thread jackin, just a quick question)

Will an injen intake with an AEM dryflow (no oil) work well or just an injen filter


sorry and thanks