Spark plugs?

[101lifts2]

Originally Posted by askmrjesus

Those are nice theories.

Unfortunately it doesn't work that way in the real world.

For one thing, even if the heads of mass produced bikes had all their threads in exactly the same sync (which they don't) the spark plugs would still not be. The ones I'm holding in my hand aren't, and they weren't exactly cheap, so, so much for theory #1......JC

I think there are many more variables that you can control (fuel quality, a/f ratio control, vehicle weight etc.) that will do more than attempting to position the spark plugs in the same position. Besides, there are alot of plugs these days that have 1 center electrode and 4 side electrodes making its position almost negligible.

Originally Posted by askmrjesus

Those are nice theories......
As for theory #2, whether or not the fuel/air mix swirls perfectly, depends on many variables, including variables caused by after-market mods like air filters, so, so much for theory #2.

The question isn't whether or not the bike will run, it's, can you make it run better?

JC

Agreed...but the mods will make more of a difference than spark plug electrode position.

[Rangerscott]

Champion FTL on ninja 250's. They are the wrong heat (wrong cross reference on champions part) and will crack, electrode melts, and/or might break apart into the engine.

http://faq.ninja250.org/wiki/Changin...rands_to_avoid


I've only used NGK on my bikes.

[askmrjesus]

Originally Posted by 101lifts2

I think there are many more variables that you can control (fuel quality, a/f ratio control, vehicle weight etc.) that will do more than attempting to position the spark plugs in the same position. Besides, there are alot of plugs these days that have 1 center electrode and 4 side electrodes making its position almost negligible.

Agreed...but the mods will make more of a difference than spark plug electrode position.

Where have I heard that before...

Originally Posted by askmrjesus

I have indexed plugs on two strokes, (adding washers to get the plug gap to face the intake ports) but I wouldn't recommended it on an I4, unless you have a dyno, and shit loads of time of your hands. Even then, you'd be lucky to get 1HP for every 100HP you started with.

JC

Oh yeah, now I remember....

JC

[Particle Man]

brutal JC Someone rose from the dead on the wrong side of the crypt this Easter Sunday

For the record I use stock plugs. Never had an issue.

[101lifts2]

Originally Posted by askmrjesus

Where have I heard that before...




Oh yeah, now I remember....

JC

Dude be nice to me...punk.

[askmrjesus]

Originally Posted by 101lifts2

Dude be nice to me...punk.

I was being nice.

I even used a larger font to help you out.

Ingrate.

JC

[z06boy]

It's pretty much time for me to change the plugs on my R1 and won't be too long for the R6. I'll either go with stock or the NGK Iridiums.