Here's why:
- Coolant circulation: The intake manifold's primary function in the cooling system is to distribute coolant evenly to the cylinder heads. By bypassing the intake and connecting both ports to the water pump, you disrupt this distribution. This can lead to uneven cooling, which can cause overheating and engine damage.
- Thermostat bypass: The thermostat is a crucial component in regulating engine temperature. It controls coolant flow by opening or closing based on temperature. By bypassing the intake, you're bypassing the thermostat's control, which can affect engine temperature regulation and cause overheating.
- Air pockets: Bypassing the intake can introduce air pockets into the cooling system. These air pockets can阻碍冷却液流动, leading to overheating and reducing the efficiency of the cooling system.
- Bypass hose failure: The bypass hose connecting the two water pump ports must withstand the pressure and temperature of the cooling system. Improper selection or installation of the bypass hose can lead to failure, resulting in coolant leakage and engine overheating.
- Impact on engine temperature gauges: Engine temperature gauges rely on sensors that measure coolant temperature at various points in the cooling system. Bypassing the intake may result in inaccurate temperature readings, as the sensor might be located in the bypassed section.
- Compromised emissions control: Some vehicles rely on coolant passages in the intake manifold for emissions control systems such as EGR (Exhaust Gas Recirculation) or PCV (Positive Crankcase Ventilation). Bypassing the intake can disrupt these systems and affect emissions control.
Considering these risks and potential negative impacts, it's strongly advised to avoid bypassing the intake on your 1979 Corvette 350 with a Holley fuel rail block. Explore alternative solutions, such as modifying the fuel rail or relocating it, to address the interference with the coolant line manifold without compromising engine performance and safety.
