Getting a New Timing Gear for a Smoother Engine
Before buying a timing gear, you should determine the correct type needed. The gears need to fit exactly into the other gears of the engine to run properly. If you get the wrong gear, you either have to replace that new gear you purchased or all the other timing gears in your engine. Open up your engine to have a look at the gears or just consult your vehicle's repair to know the right timing gear you'll need.
Types of timing gears available
- Spur - Also known as straight cut gears. This is the simplest type of gear available. The gear's teeth project outward radially and their teeth edge run straight across and parallel to the gear's axis of rotation.
- Helical - These gears are somewhat similar to the spur gear, except that the edges of the gear's teeth are set at an angle. Helical gears generally run smoother than spur gears and as a result, they are appropriate for applications that require high speed movement.
- Sprockets - These gears designed to pull on a chain and are used in conjunction with a timing chain in an automobile.
Timing gear materials
- Fibre - These are the cheapest gears available in the market. They are also arguably the quietest. With that in mind, fibre gears are also the most unreliable and are commonly prone to failures. Get these gears if you're on a budget, but remember that it may cost you even more in the long run if they fail.
- Alloy - A two-part gear made by joining a steel hub and an alloy gear ring. These gears are some of the lightest around. Its construction is also its greatest weakness since the steel and alloy parts have been known to separate over time. The weight of these gears make it appropriate for performance cars of if you like zooming across the highway.
- Steel - Heavy and very noisy, the only saving grace for steel gears is their sheer reliability. These are best for workhorse vehicles like pick-up trucks and other haulers.
Timing gear sets
If you're planning to replace a number of other components in your engine, consider purchasing timing gear sets. These kits usually come with a set of gears and other components like guide rails, chains, gaskets, seals, nuts, and bolts.
Individual gears will run you anywhere from $10 - $50 depending on their size and the material they're made of. Some premium gears on the market may cost as much as $100 each. Whether they're worth it or not is up to you. Timing gears sets usually start at $50 and may cost upwards around $200 depending on the gears and components included.
Do It at the Right Time: How to Install a Timing Gear on Your Vehicle
Setting your engine's appropriate timing and valve functions is the job of the timing gear and chain. Timing gears allow proper air-fuel ratio in your 350 Chevy's small block engine by regulating when the valves would open or close according to Chevrolet's specifications. Having an excellent timing gear gives your vehicle the capability to use maximum power from the least amount of fuel possible.
Set up the timing gear in your 350 Chevy with these steps:
Difficulty level: Moderate
Things you'll need:
- Drip pan
- Vibration dampener puller
- Gear puller
- Gasket sealer
- Timing chain cover gasket
- Water pump gaskets
Step 1: Place a drip pan underneath the drain bolt below the radiator. Remove the radiator cap and unbolt the radiator's bottom using a wrench. Drain the fluid until it reaches the fluid level just below the upper radiator hose.
Step 2: Use a dampener puller tool to detach the vibration dampener from the crankshaft. Since handling puller tools vary per manufacturer, read your tool manual for instructions on how to use your dampener tool properly.
Step 3: Using a screwdriver, disconnect the clamps holding the heater hose and the upper radiator hose on the water pump. Unbolt the water pump with a wrench and take out the cylinder block.
Step 4: Remove the timing chain cover by unscrewing the bolts surrounding it. Then, pull out the cover to access the timing chain.
Step 5: With the timing chain now exposed, use a wrench to turn the bolt at the tip of the crankshaft until the two indentations point towards each other. Unbolt the upper timing gear and pull it off the camshaft. Take out the chain from the bottom gear as well. Then, use a gear puller tool to detach the bottom gear from the crankshaft.
Step 6: To install the timing gears, insert the lower timing gear by sliding it onto the tip of the crankshaft. Once in position, wrap the timing chain around the lower gear first and the upper gear second. Push the upper gear onto the tip of the camshaft.
Step 7: Replace the three bolts on the upper timing gear and tighten them with a wrench. New gasket sealers should be installed on each side of the timing chain cover gasket.
Step 8: Align the gasket onto the back of the timing chain cover and place the cover on top of the timing gears and against the cylinder block. Replace the pump's bolts and tighten them with a wrench. Place the vibration dampener onto the tip of the crankshaft and tighten the single bolt into the crankshaft.
Step 9: Reconnect the heater hose and the upper radiator hose to the water pump. Use a screwdriver to secure the clamp. Then, return the radiator fluid from the drip pan to the radiator.