What is the purpose of a bypass hose?

The heater bypass tube is a cooling system component found on many road going cars and trucks. It’s purpose is to serve as a cooling system passage that bypasses the thermostat, so that there is coolant flow even when the engine thermostat is closed.

What is the bypass hose for on a big block Chevrolet?

1485552 – Gm – Big Block Chevy Coolant Bypass Hose Coolant bypass hose connects intake to water pump.

Do I need a bypass hose?

The bypass is necessary to allow a small amount of water to circulate when the thermostat is closed. Without a buypass the opening of the thermostat would be delayed and the engine could develop hot spots or even steam pockets before the stat opens.

What is a coolant bypass pipe?

The coolant bypass pipe or hose directs coolant flow through the engine based on different conditions of the engine, like a traffic guard who directs traffic into an optimal flow. In the engine, this flow is directed by the thermostat, which closes when cooled. We supply these pipes for all vehicles.

How do you replace a coolant bypass hose?

How to Replace a Coolant Bypass Hose

1. Jack up the front of the car and lower it onto jack stands below the two front tires.
2. Use a screwdriver to loosen the bypass hose clamps and remove the hose.
3. Install a new hose and tighten the clamps.
4. Lower the car from the jack stands and refill the radiator with coolant.

Can you do a coolant flush at home?

Flush the Radiator Remove the radiator cap and pour distilled water into the radiator until full. Replace the cap, then start up the vehicle and let it run for 10 to 15 minutes. This will work the distilled water into the engine, flushing out any loose debris or corrosion along with the last of the old antifreeze.

How do you replace a bypass hose?

How to Replace a Coolant Bypass Hose

1. Jack up the front of the car and lower it onto jack stands below the two front tires. Place a drain pan under the radiator drain valve.
2. Use a screwdriver to loosen the bypass hose clamps and remove the hose.
3. Install a new hose and tighten the clamps.

How much does a coolant hose cost to replace?

The average cost for radiator hose replacement is between $138 and $159. Labor costs are estimated between $81 and $102 while parts are priced at $57. This range does not include taxes and fees, and does not factor in your specific vehicle or unique location. Related repairs may also be needed.

How often should you replace coolant hoses?

Coolant hoses typically last several years, though anything longer than 10 years may be pushing the limits. Rubber weakens with age and from repeated exposure to hot coolant, so the older they get the higher chance they’ll leak and cause the engine to overheat.

Can a water pump be installed with an intake manifold?

Once the intake manifold is in place, you can bolt on the water pump, installing the bypass hose as you do so. Original tower-type hose clamps replace those that were on our engine when it was removed from the car. We opted for a new set of water pump bolts, since some of the originals were quite corroded.

What causes coolant to leak from the intake manifold?

After confirming the coolant leak, you need to find the location of leaking. If the coolant is leaking out through the joining point of the engine and the manifold, then it happens only for the damaged gasket. The coolant can also leak through the radiator or the rubber pipes. 2. Engine Overheats

What kind of water pump do I need for a big block Chevy?

If you are going to use one of the aftermarket billet aluminum serpentine belt pulley sets, you must switch to a reverse-rotation pump from a 1988-or-newer big-block. Many aftermarket water pumps are more than just lightweight versions of the stock pump.

How does the damper work on the intake manifold?

The damper is controlled thermostatically to deflect the exhaust gases around the intake manifold. When the engine is cold, all the exhaust gases pass around the intake manifold.

Where is the intake manifold on a small block Chevy?

Small Block Chevy Vortec Intake Manifold there is a corresponding location on your new intake manifold for all of the hose fittings and gauge sensors. Fitting and Install the .Chevrolet C/K 10 Questions – Is heater core part of coolant bypass in Chevy – CarGurusHow Auto Cooling Systems Work – Tech Article – Chevy High Performance Magazine

If you are going to use one of the aftermarket billet aluminum serpentine belt pulley sets, you must switch to a reverse-rotation pump from a 1988-or-newer big-block. Many aftermarket water pumps are more than just lightweight versions of the stock pump.

What kind of cooling system does a Chevy big block use?

Chevrolet’s Mark IV big block 396/402/427/454 engine uses only the hose for its bypass system. Early 1965 through 1968 Mark IV engine with a “short” water pump uses a bypass hose with a 90-degree bend due to the short distance between the water pump and the intake manifold.

What kind of water pump does a 1965 Chevelle use?

Early 1965 through 1968 Mark IV engine with a “short” water pump uses a bypass hose with a 90-degree bend due to the short distance between the water pump and the intake manifold. The 1969 and later Mark IV engines have a “long” water pump so the bypass hose is not as ‘bent’ as the early engines.