Engine 1300cc high compresion je piston.carrilo rods. Stage one heads. Fcr 's 39 pcw setup.
I made 2 dyno runs. In a 20 years expierence drag racer which has a dyno.
He uses an instrument called innovator for measuring the air fuel ratio. (sean morley i hope you know the instrument because i need your lights here).
He told me this instrument the lower numbers you see the smallest main jets you need. Lower number = to much fuel.
1st dyno was at 9.5 air fuel ratio the power was 126 hp.
When the engine became a little hotter we run a 2nd dyno where the air fuel ratio was 10.5 and stayed there. Power was 136.39 hp = 138 ps.
He told me that there is more power if we achieve the 13 -13.1 air fuel ratio but i need smaller main jets. My fcr's have 160 mian jet's.
He told me he could "play" the air fuel ratio screw but the only thing i will do i to lose power in the lower and gain the power in the higher rpm's. So his advice was to try some smaller jets to try reaching the 13.1 air fuel ratio. I couldnt have a page for the air fuel. But in idle the fuel ratio was about 12.5 but in higher it droped to 10.5. I say again the instument measures smaller numbers= to much fuel.
Here is the dyno . How much more power will i gain if i achieve the 13.1 air fuel ratio ? ? ?
The power comes below 8000 rpm after it drops
I made 2 dyno runs. In a 20 years expierence drag racer which has a dyno.
He uses an instrument called innovator for measuring the air fuel ratio. (sean morley i hope you know the instrument because i need your lights here).
He told me this instrument the lower numbers you see the smallest main jets you need. Lower number = to much fuel.
1st dyno was at 9.5 air fuel ratio the power was 126 hp.
When the engine became a little hotter we run a 2nd dyno where the air fuel ratio was 10.5 and stayed there. Power was 136.39 hp = 138 ps.
He told me that there is more power if we achieve the 13 -13.1 air fuel ratio but i need smaller main jets. My fcr's have 160 mian jet's.
He told me he could "play" the air fuel ratio screw but the only thing i will do i to lose power in the lower and gain the power in the higher rpm's. So his advice was to try some smaller jets to try reaching the 13.1 air fuel ratio. I couldnt have a page for the air fuel. But in idle the fuel ratio was about 12.5 but in higher it droped to 10.5. I say again the instument measures smaller numbers= to much fuel.
Here is the dyno . How much more power will i gain if i achieve the 13.1 air fuel ratio ? ? ?
The power comes below 8000 rpm after it drops
