Hi All Carb gurus out there I need a hand.
Engine 351C 2V CHI heads
Edelbrock Air-Gap
Camshaft
Intake Duration @ .050": 227°
Exhaust Duration @ .050": 227°
Advertised Intake Duration (@ .006"): 281°
Advertised Exhaust Duration (@ .006"): 281°
Intake Valve Lift with OE Rocker Ratio (1.73): .542"
MSD 6AL Distributor without vacuum advance.
Automatic transmission FMX Stall speed 2400 RPM.
Electric fuel pump delivers 6-7 psi, with gauge.
Okay so here goes. The carb is brand new from factory, stock jetting should be 70 main.
Fuel bowl check.
Ignition timing is 19°.
Idle four mix screw set.
I'm having a hard time starting it, I have to give it some gas otherwise it will die.
If I put in some choke it dies directly. I have an Innovate Lambda meter inside the car.
When the Engine is at operating temperature the idle is about 1200 rpm in park and AFR is 12.3
In gear the idle drops to 800 and AFR is 13.4-13.6 just right I would say.
If I shut down the Engine and restart it start directly without even giving some gas.
Cruising is about 13.7 - 13.9, which is good I believe.
WOT is about 10.6 - 10.9, which I Think is a little bit low.
No bogs, no backfire no hesitation.
Plugs look just fine.
Is is that this combination cant idle in gear with an AFR that is around 13.6
when Engine is idling at about 12.6 the plugs get fouled.
Should I back off the timing a little bit? Best regards, Rob
Engine 351C 2V CHI heads
Edelbrock Air-Gap
Camshaft
Intake Duration @ .050": 227°
Exhaust Duration @ .050": 227°
Advertised Intake Duration (@ .006"): 281°
Advertised Exhaust Duration (@ .006"): 281°
Intake Valve Lift with OE Rocker Ratio (1.73): .542"
MSD 6AL Distributor without vacuum advance.
Automatic transmission FMX Stall speed 2400 RPM.
Electric fuel pump delivers 6-7 psi, with gauge.
Okay so here goes. The carb is brand new from factory, stock jetting should be 70 main.
Fuel bowl check.
Ignition timing is 19°.
Idle four mix screw set.
I'm having a hard time starting it, I have to give it some gas otherwise it will die.
If I put in some choke it dies directly. I have an Innovate Lambda meter inside the car.
When the Engine is at operating temperature the idle is about 1200 rpm in park and AFR is 12.3
In gear the idle drops to 800 and AFR is 13.4-13.6 just right I would say.
If I shut down the Engine and restart it start directly without even giving some gas.
Cruising is about 13.7 - 13.9, which is good I believe.
WOT is about 10.6 - 10.9, which I Think is a little bit low.
No bogs, no backfire no hesitation.
Plugs look just fine.
Is is that this combination cant idle in gear with an AFR that is around 13.6
when Engine is idling at about 12.6 the plugs get fouled.
Should I back off the timing a little bit? Best regards, Rob
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