Spark Plugs & AFR changes

j9fd3s · 03-31-2011, 04:21 PM

interesting. since fuel and air volume are close enough to the same, does that mean a richer AFR = more complete combustion, or is it the other way around?

ive noticed differences too, i'm currently playing with a 12A PP with a 48IDA, and i've tried a few different plugs in the "tuning the carb" phase.

in the idle/low speed range the rx8 plugs actually wanted more fuel than the autolites.

the W/b on a p port is kind of a slippery slope, its on there...

RICE RACING · 04-01-2011, 08:06 PM

Quote:

Originally Posted by j9fd3s

interesting. since fuel and air volume are close enough to the same, does that mean a richer AFR = more complete combustion, or is it the other way around?

ive noticed differences too, i'm currently playing with a 12A PP with a 48IDA, and i've tried a few different plugs in the "tuning the carb" phase.

in the idle/low speed range the rx8 plugs actually wanted more fuel than the autolites.

the W/b on a p port is kind of a slippery slope, its on there...

Yep, it's common. Surprised more people don't notice this.

03-31-2011, 04:21 PM	#1
j9fd3s Rotary Fanatic Join Date: Mar 2008 Posts: 123 Rep Power: 18	interesting. since fuel and air volume are close enough to the same, does that mean a richer AFR = more complete combustion, or is it the other way around? ive noticed differences too, i'm currently playing with a 12A PP with a 48IDA, and i've tried a few different plugs in the "tuning the carb" phase. in the idle/low speed range the rx8 plugs actually wanted more fuel than the autolites. the W/b on a p port is kind of a slippery slope, its on there... Last edited by j9fd3s; 03-31-2011 at 04:24 PM.