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Intake Manifold

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Intake Manifold Products

Poor engine performance can be attributed to a lot of different causes. But if the root of your engine woes is the lack of fuel and air entering your cylinders, then you need to check your Intake Manifold. There's a big chance that this manifold is clogged or has sprung a leak. This component, which is also known as an inlet manifold, is a vital part of your engine system. You see, this manifold is what sends out air-fuel mixture from your throttle body or fuel injection system to the individual cylinders of your engine. It makes sure that your engine gets the right amount of fuel and air to function properly. When you inspect the inlet manifold, you'll find that it's made up of a single intake opening and several connecting tubes and outlets. The number of outlets in this manifold corresponds to the number of cylinders found in your engine. If you have a multi-point injected engine, then you'll also find your fuel injectors inside this manifold. Crafted using high-grade GRP molding or aluminum casting, your car's Intake Manifold is built for lasting service. But extreme engine heat can take its toll on this manifold, leading to irreparable damage. Without this manifold, your engine won't be able to function properly, if at all. That is why, if you've got a damaged inlet manifold in your ride, then we highly recommend replacing this component. To find the right inlet manifold for your car, check out our selection of top-quality intake manifolds at the Auto Parts Warehouse catalog today.

Buying Guides

Date Published :

Choosing the Right Intake Manifold for Your Engine

An appropriately designed manifold can do wonders for your car engine's performance. However, choosing the right one for your ride can get tricky, what with all the types sold in the market these days. Read on to know more about the common types of intake manifold according to layout, height, material, and built as well as the applications that best suit each design:

Layout: Single or dual plane?

A single plane manifold basically has one hole in the plenum. It offers less restriction for the air flow and has a power range of 3000 to 8000 RPM. This type is best suited for race cars.

A dual plane has a split plenum opening and has a wider power range which starts at 1500 RPM. It's best used on an engine used for mild racing and street racing.

Height: Low rise, high rise, or tunnel ram?

Basically, a low rise intake manifold fits better under the hood, while a high rise type may require adjustments to fit. Compared to a low rise, a high rise manifold offers more horsepower and is suited for a higher RPM range and wider power band.

A tunnel ram is a more extreme version of a high rise manifold. This type is designed for engines that require high RPMs and plenty of horsepower. It's best suited for professional car racing engines.

Material: Plastic or aluminum?

Many cars today use a plastic manifold because this type is lightweight and can be easily cast for better airflow. However, it'll easily break if the engine backfires. As for aluminum, it's definitely heavier than plastic but it's more durable. It can also be easily polished, coated, plated, and modified according to specific needs. For heavy-duty use and longer-lasting performance, it's best to go for an aluminum intake manifold.

Built: Custom or cast?

A customized intake manifold can be molded from billet aluminum or hand-built using an aluminum sheet. Whichever the case, a custom-designed manifold can cost thousands of dollars. If you're a serious racer looking for extra horsepower, investing in a customized manifold is a good choice.

If you're a regular Joe looking for a simple replacement, then go for a mass-produced manifold that's more budget-friendly. When it comes to durability, many brands today offer affordable cast manifolds that won't easily give in to wear and tear.

When shopping for an intake manifold, don't forget to take note of your car engine's part number and design as these factors can also affect the type of manifold that'll fit just right. It's also best to do some research first on the most popular brands that offer high-quality manifolds. By arming yourself with the right information, you should be able to choose the right intake manifold without too much of a hassle.

Repair Guides

Date Published :

How to Keep Your Intake Manifold Free from Carbon Deposits

Have you been experiencing sluggish engine performance and rough idling? One possible cause is a dirty intake manifold. Over time, carbon deposits and grime can pile up on its surface and tubes, blocking the passageway for the air and fuel mixture. To remove carbon deposits and keep your engine in top condition, here's how:

Difficulty level: Moderate

Tools needed:

  1. Intake cleaner
  2. Socket/ wrench set
  3. Degreaser
  4. Scraper or putty knife
  5. Needle nose pliers
  6. Rags
  7. Corks
  8. New intake manifold gasket
  9. Screw driver

Step 1: Park the car on a level ground, preferably inside a garage. Let the engine cool down completely before starting any work.

Step 2: Using the right socket, disconnect the cables from the battery.

Step 3: Drain out the coolant and detach the hoses using the right screw driver.

Step 4: Remove the vacuum hoses attached to the intake manifold. Take note of the proper connection ports for easier reinstallation.

Step 5: Disconnect the following parts using the appropriate socket, wrench, or screw driver:

  • Fuel lines (to prevent fuel from leaking into the engine compartment, stick corks into the end of the tube)
  • Wiring connections on the carburetor)
  • Air ducts (unbolt it from within the exhaust manifold)

Step 6: Unbolt the intake manifold by using the right socket wrench. Carefully lift it off from the engine block.

Step 7: Plug lint-free rags into the various engine ports and scrape off the gasket with a putty knife.

Step 8: Get rid of carbon deposits by wiping the intake manifold with a rag soaked in intake cleaner. With the help of a scraper, pry off the remaining deposits. Once the grime is removed, wipe the manifold again with the cleaner-soaked rag.

Step 9: After cleaning the manifold, install the new gasket and torque it in place.

Step 10: Attach the newly cleaned manifold back in place by following the same bolt arrangement. Make sure the manifold and gasket are aligned properly.

Step 11: Install all the other parts you removed under step 5 by bolting or plugging them back in place.

Step 12: Drive your car to see if the manifold has been properly installed.

Goggles should be worn to prevent the intake cleaner from getting into the eyes. When bolting down the intake plenum, start at the middle to lessen the chances of misalignment and warping.

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