Showing 121–150 of 158 resultsSorted by popularity
In terms of performance benefits, intake manifolds can help optimise airflow and potentially increase power. They can increase the distance between throttle valves and intake valves, thus improving airflow distribution.
Some intake manifolds provide smoother transitions from round to square cross-sections, reducing flow losses. They may also allow for straighter airflow paths, potentially decreasing turbulence. Aftermarket intake manifolds can allow larger or multiple carburettors or throttle bodies to be utilised on an engine, therefore improving the level of tuning precision and increasing air flow rates.
By eliminating coolant circulation, some intake manifolds can help with temperature management. Lowering the intake air temperature, improves air density and potentially increases power. The installation of a suitable aftermarket intake manifold can allow the use of larger or multiple carburettors or throttle bodies which in turn will increase the scope of engine tuning and therefore performance.
While aftermarket or custom made intake manifolds are very useful, the impact they have on the performance of the engine is not always positive. The influence on the flow area and flow velocity is characterised by aspects like bore size, runner length, thickness and difference in design. If this is unclear to you, do not hesitate to contact us at: [email protected]
Intake manifolds offer several benefits for engine modification and performance enhancement. These components allow for compatibility between aftermarket or performance carburettors or throttle bodies to engines with different bolt patterns or port configurations. This enables enthusiasts to upgrade their engine’s performance without having to perform an elaborate engine swap.
In terms of performance improvements, intake manifolds can help to optimise airflow by providing smoother transitions and potentially reducing turbulence. Some intake manifolds have been reported to increase horsepower and torque, with gains of up to 20hp in naturally aspirated applications. Certain manifolds can also improve high-RPM flow, resulting in a broader power-band.
Aftermarket or custom made Intake manifolds provide various customisation options. They allow larger, alternative or multiple carburettors or throttle body configurations or arrangements. This versatility can be particularly useful for engine builders and performance enthusiasts looking to improve their engine’s performance without having to go through an engine swap.
Aftermarket Intake manifolds are components used to connect different types of carburettors or throttle bodies to engines they weren't originally designed for.
They can offer several benefits:
1. Compatibility: they allow installation of aftermarket or performance carburettors or throttle bodies on engines with different bolt patterns or port configurations.
2. Performance improvements: they can optimise airflow, potentially increasing horsepower and torque.
3. Customization: they enable use of different carburettors or throttle body configurations.
4. Temperature management: some intake manifolds help lower intake air temperatures, improving air density and power output.
However, the effectiveness of intake manifolds depends on specific applications and designs. Proper selection and installation is crucial for achieving desired performance results. While they can offer significant benefits, intake manifolds may also introduce challenges like potential air leaks or changes in air velocity that need to be considered during installation and tuning.
To choose the right intake manifold for your vehicle:
1. Determine compatibility: ensure the intake manifold matches your engine's bolt pattern and port configuration.
2. Consider your goals: decide if you're aiming for increased horsepower, improved torque, or better fuel efficiency.
3. Match to your driving style: ‘driving miss daisy’, fast road or race applications might require different manifolds.
4. Check RPM range: select a manifold that aligns with your engine's desired operating RPM range. (Camshaft profile plays a big role in this.)
5. Evaluate bore size: larger intake manifold bore / plenum diameters suit high-RPM applications, while smaller ones are better for low-end torque.
6. Assess runner design: longer, narrower port runners favour low-end torque, while shorter, wider port runners benefit from high-RPM power.
7. Consider material: aluminium intake manifolds offer good heat dissipation, while phenolic spacers provide insulation.
8. Verify clearance: ensure the aftermarket/custom intake manifold will physically fit within your vehicle's hood / bonnet and clear the inner wing or bulkhead.
9. Check for additional features: some intake manifolds offer extra vacuum ports or allow for larger carburettors or throttle bodies. Please note some intake manifolds might offer less options for connecting vacuum ports.
10. Consult experts: if in doubt, feel free to send us an email on [email protected].
When installing intake manifolds, consider the following:
1. Compatibility: ensure the intake manifold matches your engine's bolt pattern and port configuration.
2. Gaskets: use high-quality gaskets and ensure mating surfaces are clean and flat. Only apply appropriate sealants in specific applications that require this; generally, a good quality gasket and a clean flat surface is perfectly adequate.
3. Torque sequence: follow the manufacturer's recommended torque sequence when tightening bolts (if applicable).
4. Clearance: check for adequate hood / bonnet clearance and potential interference with other engine bay components such as vacuum brake servo, batteries or battery tray, alternator and ignition distributor or anything else.
5. Vacuum lines: properly reconnect or reroute vacuum lines as needed.
6. Coolant passages: address any changes in coolant routing, using plugs, pipe or hose unions or additional hoses as required.
7. Carburettor or throttle body alignment: ensure proper alignment - especially when installing multi-carburettor or throttle body systems - and check for interference between throttle valve(s) and intake manifold bore or plenum chambers when throttle is fully opened.
8. Electrical connections: reconnect all sensors and wiring as required (if applicable).
9. Fuel system: adjust fuel pressure if necessary or introduce an aftermarket electric fuel pump and adjustable fuel pressure regulator (if required).
10. Tuning: some recalibration of the carburettor or throttle body might be required (if applicable). If multiple carburettor or throttle bodies are installed, basic tuning and synchronising will need to be carried out as soon as the engine has started.
11. Heat management: consider using thermal gaskets or spacers to manage/reduce heat transfer between engine and intake manifold or carburettor / throttle body.
12. Emissions compliance: ensure the modification complies with local emissions regulations.
