Fuel mixture differs between cylinders.

[Schnyggve]

I'm going to install an EGT on my superchaged TPI. And I want the EGT to be on the cylinder that run the leanest. So does anyone whichone of them that run the leanest mixture..

 

[vetteboy86]

How would you even tell which runs the leanest? I guess you might get some clue from looking at the spark plugs.

 

[Schnyggve]

How would you even tell which runs the leanest? I guess you might get some clue from looking at the spark plugs.

ALL intake manifolds have a flowdifference between the cylinders.. om the LT1 Gm uses secuentiall injection, the highest flowing cylinder get extra fuel to compencate. The TPI have the same problem but GM solved that problem by making the engine run on a constant FAT mixture (on the FAT side, not outrageous).

If i had a Flowbench there woudn't be a problem to detemine which cylinder that gets the most AIR.

Why, I'm interested in this is because I'm going to run a badÄ** supercharged engine. And if i use the EGT properly (put it on the cylinder with the leanest mixture) i can run safe with a really aggressive ignition curve.

 

[vetteboy86]

It makes sense know. I hope you find the answer to your questions. Have you called any performance places like Ligenfelter, or Doug Rippie motor sports to see if they had suggestions?