Spark Plug Advice Needed
I am having a carbon problem on my intake and exhaust valves that I cleaned up last winter. It was quite thick on the intake and the exhaust indicating it was running very rich for years.
It's all back together now and I'm trying to get it to burn cleaner.
It's a 9.9:1 340 with magnum heads and a 650 Eddy Thunder carb stock calibration. The distributer is set at 34 degrees at 3400. Initial comes in at 16 degrees. The vacuum can is hooked to manifold vacuum. Exhaust manifolds are on it too. Cam is 220/226 Lunati. I use 87 octane with no spark knock.
The pictures to me say the timing is ok but the heat range is too cold. It's runs rich on the cruise and acceleration.
I ordered a set of rods for the carb that are 8% leaner on the cruise and accel. And I'm thinking two numbers on the plugs? Or is that too much of a jump?
The car runs good and the exhaust doesn't smell overly rich.
Just wondering if my thinking is a step in the right direction or if I'm reading it wrong.
I am having a carbon problem on my intake and exhaust valves that I cleaned up last winter. It was quite thick on the intake and the exhaust indicating it was running very rich for years.
It's all back together now and I'm trying to get it to burn cleaner.
It's a 9.9:1 340 with magnum heads and a 650 Eddy Thunder carb stock calibration. The distributer is set at 34 degrees at 3400. Initial comes in at 16 degrees. The vacuum can is hooked to manifold vacuum. Exhaust manifolds are on it too. Cam is 220/226 Lunati. I use 87 octane with no spark knock.
The pictures to me say the timing is ok but the heat range is too cold. It's runs rich on the cruise and acceleration.
I ordered a set of rods for the carb that are 8% leaner on the cruise and accel. And I'm thinking two numbers on the plugs? Or is that too much of a jump?
The car runs good and the exhaust doesn't smell overly rich.
Just wondering if my thinking is a step in the right direction or if I'm reading it wrong.