Change can be difficult. While few embrace it, change must happen in order to evolve and improve. When EVO fans discovered their beloved 4G63 would be replaced with an all-aluminum engineoutrage ensued.
Many questioned why Mitsubishi did away with an iconic and nearly indestructible engine that has set records for the last two decades. The reason was simple: new, more-stringent emission requirements. Detuned to meet these limits, the 4G63 engine would max out at horsepower. The biggest change made to the EVO heritage was the move to an all- aluminum short block.
Mitsubishi 4B11/4B11T 2.0L Engine Review
One of the obvious advantages of the aluminum bottom end is weight savings. The new EVO engine weighs 26 lbs less than the 4G In addition, the superior thermal efficiency of aluminum increases heat transfer to the cooling system. As a result, cooler piston and oil temperatures improve engine durability and longevity.
The cast-iron 4G63 engine, seen in previous EVO platforms, has proven to withstand high-horsepower production. Although cast-iron offers a substantial benefit in strength over aluminum, Mitsubishi took the necessary steps to ensure the durability of the 4B11T bottom end.
First off, the bottom end features a four-bolt main cap to ensure the crankshaft is secured in place. The block deck is semi-closed to resist cylinder wall distortion at increased boost levels. Furthermore, a two-piece oil pan design increases block rigidity and prevents the block from twisting and flexing at high-RPM operation.
The 4B11T with a semi-closed deck design compared to the solid- deck design of the 4G In stock trim the 4B11T engine generates substantially better low- end and mid-range power than the 4G63 engine. The 4B11 also realizes a With light tuning intake, exhaust, downpipe, camshaft, intercooler upgrade and reflasha difference of only 3.
Future modifications include higher lift and longer duration camshafts as well as a larger turbocharger and a high-octane retune. On the exhaust side, the 4B11 flowed close to the 4G63 at valve lifts above.
All measurements were taken at 50 inHg. However, it should be noted that the 4B11 uses smaller higher-velocity ports designed to fill the cylinder faster at lower engine speeds. This design change and the use of MIVEC on both cams allows the 4B11 to have superior low-end and mid-range power production.
Comparing the CNC-ported heads from Cosworth, the intake flow advantage for the 4G63 is closer to 10 percent. On the exhaust side, flow rates are nearly identical. A Cosworth CNC-ported 4G63 head flow about percent better on the intake and nearly percent better on the exhaust than the factory heads. A Cosworth CNC-ported 4B11 head picks up over percent more flow on the intake and nearly percent on the exhaust. The dual MIVEC control allows for a wider range of duration and valve overlap to promote turbo spool up and overall horsepower production.
The direct-valve actuation design eliminates the hydraulic lifter and rocker arms that were used on the 4G63 head. The bucket- over-valve design decreases the chances for failure at high-RPM operation. Over the years, hundreds of examples of stock block 4G63 engines have generated over horsepower to the wheels, while fully-built examples have exceeded 1, horsepower.
Barely entering its second year on the market, stock block 4B11T engines have already recorded wheel horsepower dyno figures. However, due to its relatively new introduction there are few fully-built examples of the 4B11T engine to compare to. Leave it to Mitsubishi to build an engine that can handle four times what they engineered it to make.
The semi open-deck design that everyone worried about has proven to be much stronger than anyone had guessed. Buschur Racing is now offering Stage 3 engines with stock sleeves and have found no reason to upgrade the factory cylinders. The power output of the engine, part-for-part has proven to be higher than the 4G63 to date.The finned stand-off design of the bung functions to both cool the sensor body and minimize restriction in the exhaust port. Part Part P Minor leaks from the clutch and master cyclinder wont escape a set of these and the logo is sewed into the fabric to resist peeling.Reshade forums
Built with 3 rows, this radiator is the ideal upgrade to your stock radiator. Having a turbo set-up produces a great amount of heat; by replacing your current stock radiator with a Mishimoto X Line Radiator you will undoubtedly no This will improve the efficiency of a radiator and adds a nice touch to an engine bay.
Comes in twill weave carbon fiber with a The heart of the mounts are made of high grade polyurethane material. These combination's of materials and measurements allow for unmatched performance and reliability. For street and race applicat Made from 60 durometer polyurethane.
Each mount includes 2 half's and a center steel sleeve. These give you improved traction and reduced wheel Upgrading your stock rubber bushings to urethane bushings will help reduce engine movement and wheel hop. This means you receive better traction, whic Your Cart is Empty! All Rights Reserved. New Arrivals. View Cart. Install Tips. Air Intake. Blow Off Valve. Boost Controllers.One of the easiest ways to increase the horsepower of an engine is to increase the airflow to the engine.
There are various types of air intakes, but in the end many drivers lean towards a cold air intake. Cold air intakes are designed with an increased surface area to pull air through and then they make that air cold.
Cold air intakes can be up to three times larger than factory air intakes. Cold air is denser than warm air, and denser air has more oxygen, which is key to creating bigger explosions in the combustion chamber. After the engine burns up the air and fuel, it expels the leftover fumes through the exhaust.
The CatBack exhaust will remove the restrictions of the muffler and allow fumes to escape quickly in a straight shot. So if you are looking for a boost in power, a forced induction system can increase horsepower by 50 percent or more. This is a similar concept as the cold air intake, more air to burn equals more horsepower. When it comes to forced air induction though, there is a small difference between supercharging and turbocharging.Kailh silent micro switch
Powered by a belt that connects to the engine, superchargers offer an instant power boost and are easier to install. Catalytic converters work with the exhaust to handle and trim as many toxins from the emissions as possible. Instead, go with a high-flow catalytic converter.
They work the same exact way as a factory-installed converter, but do it faster, increasing the exhaust flow from the engine, resulting in more torque and horsepower. Cars today are controlled by computers, and computers run via a program. See where this is going?
By utilizing simple performance software, you can reprogram the computer to adjust vehicle settings and performance capabilities. There you have it. What are some other mods you can share with us for upgrading the horsepower of a Mitsubishi Lancer, or any vehicle lacking power for that matter? Let us know on our Facebook page. Your email:. Miami Lakes Mitsubishi Blog.
Mitsubishi 4B1 engine
Cold Air Intake One of the easiest ways to increase the horsepower of an engine is to increase the airflow to the engine. CatBack Exhaust After the engine burns up the air and fuel, it expels the leftover fumes through the exhaust. High-Flow Catalytic Converter Catalytic converters work with the exhaust to handle and trim as many toxins from the emissions as possible.
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Click to Enlarge. Shipping Options: Free Ground Shipping. Long x5 in. Out; Incl. Magnaflow Exhaust System. Round Tip; Single Straight Pass.For months on end leading to the debut of the newest Mitsubishi Evolution, anticipation ran high among automotive enthusiasts as they sat patiently licking their chops for their chance to purchase the new Evo x.
Green Giant Word on the street had quickly risen that Evo x's new 4B11 powerplant used a smaller exhaust camshaft with less lift and duration.
Adding to the troubling news was Mitsubishi's new outlook on going environmentally green that was relevant even on the new Evo, as they implemented environmentally friendly exhaust valves that eliminated the once sodium-filled valves found on the Evo Ix. These minor changes paled in comparison to the shocking news that Mitsubishi's cast-iron block, which offered exceptional durability in all previous models, was replaced with a more conventional open-deck aluminum-alloy setup.
Preliminary news for the Evo x was looking grim for Evo enthusiasts and those reporting on the findings. Or at least that was until we received exciting news that the 4B11 engine had been carefully reverse engineered by Tomei Powered of Japan. Tomei engineers have diligently studied the 4B11's internal design in order to fully educate themselves before even attempting to lift a finger in fabricating high-performance aftermarket products. Now that's what you call dedication, folks. From the valvesprings to the piston design, Tomei Powered has carefully analyzed and recorded every conceivable part on the engine to the minute detail with some positive results.
Prepare yourself as the Tomei engineers spit knowledge and breakdown the newest Mitsubishi 4B11 engine while comparing it to the previous 4G63 powerplant in their official Evo x Technical Report. The Obvious Difference Following the public release of the Mitsubishi Evo x, Tomei Powered quickly acquired and disassembled the newest 4B11 powerplant to begin their research.
Exploring the Limits of the EVO X Engine | 4B11T vs 4G63
Tomei's first step toward research proved crucial for the development of their own 4B11 products as it involved familiarizing and discovering the basic characteristics of Mitsubishi's new engine design. Another aspect of this research included a side-by-side comparison with its predecessor, the 4G This comparison was significant for the Tomei engineers as it provided further insight on how this engine is going to be modified and its potential capabilities.
The first and most obvious change from the 4G63 to the new 4B11 was the rocker arm-type valvetrain being replaced with the 4B11's direct acting unit and the timing belt being replaced with a silent-chain setup. The MIvEC feature, which was only available on the intake side on the latest version of the 4G63, was now available on both intake and exhaust on the 4B11, offering a wider range in powerband while keeping eco-friendly with emissions was the general focus for Mitsubishi engineers when building the engine.
Bearings Adopted Onto Exhaust Side Cam Journals Several devices equipped on this engine indicate that the engineers at Mitsubishi have paid particular emphasis on the 4B11's oiling system design. On the exhaust side camshaft, the No. This bearing adaptation was implemented to increase reliability and decrease friction within the cam journals. Thicker oil lines were also installed to supply an increased amount of oil due to the existence of the MIvEC system.
The design included engineering an area where the piston top geometrically matches well with the combustion chamber design.
By looking at the piston design, it doesn't resemble the conventional forced-induction profile, but looks to be designed to that of a low-emissions engine.
The intake and exhaust ports have large-diameter ports for improved efficiency. The low-emissions-producing design was also made with the MIvEC feature in mind.Frontier proxy
The 5. Compared to an sR unit with the same bore, the intake is shown to be bigger by 1mm, while the exhaust valve is smaller by 1mm. The objective of the 4B11 camshaft was designed to produce a cleaner exhaust gas while exhibiting good power output with the help of MIvEC. The sodium-filled valves found in the 4G63 have now been replaced with standard surface-treated units, which were considered for environmental reasons.
Tomei Powered engineers have reason to believe a drawback with the 4B11 exhaust valves may be prone to heat damage since the seat rings and valve guides weren't manufactured with copper materials.We are able to make changes to your car to meet your needs. All vehicles still get a individually adjusted tune. These are a fixed package provided at a discounted price and is only available for Perth Customers to be installed and tuned at RPW Premises.
These packages must be booked at least 1 week in advance. For those wishing to do the work themselves or are living Interstate of Perth, you can purchase the individual components from our Online Website Store click to go to our site.
This package covers the basic level of performance enhancements for improved performance. The package includes. This package continues from the Stage 1 for further improved performance and has the additional items.
This package has increased performance enhancements focusing on increased reliability and consistency. This package continues from the Stage 2 for further improved performance and has the additional items. Referenced articles for additional information - recommended reading for all customers.
Performance Package Stage 3 — Kw Plus. This package continues from the Stage 3 for max performance on stock internals and has the additional items. Dyno Link — click here to view Dyno Sheets. This package continues from the Stage 1 for further improved performance and has the additional items for improved breathing especially at the high rpm.
As they always say there is no replacement for displacement. Increased engine capacity will improve the vehicle in the following ways. For those wanting a higher level of horsepower again, fitting the Ralliart Lancer Turbo has huge potentials but will generally require. In all cases the factory ECU is remapped to provide the full benefits of these engine conversions. We recommend for the majority of customers, the 4B12 engine upgrade for all 2. Performance Package Stage 2 — Kw Average.
This package continues from the Stage 1 for further improved performance and covers the majority of performance enhancements required for the majority of customers. This has the additional items. Performance Package Stage 3 — Kw Average. This package continues from the Stage 2 and focuses on improved boost control at the high rpm. Performance Package Stage 4 — Kw Average.
This package continues from the Stage 3 Package to suit the person who wants to push the stock internals of his engine to its maximum capability.
Beyond this its time for some forged internals.The cylinder block and other basic structural parts of the engine were jointly developed by the GEMA companies, but the intake and exhaust manifoldsthe cylinder head 's intake and exhaust ports, and other elements related to engine tuning were independently developed by Mitsubishi.
All engines developed within this family have aluminium cylinder block and head, 4 valves per cylinderdouble overhead camshaft layouts, and MIVEC continuous variable valve timing. All variations of 4B1 engine share the same engine block. The difference in displacement is achieved by variance in bore and stroke.
The 4B1 engine family is the first to have the continuously variable valve timing MIVEC system applied not only to its intake valves but also to its exhaust valves. The intake and exhaust cam timing is continuously independently controlled and provide four optimized engine operating modes. Mitsubishi used a timing chain instead of a belt for better reliability and iridium spark plugs to lower emissions and to help extend major service intervals for lower cost of ownership.
To reduce weight, Mitsubishi used a plastic cam cover and intake manifold and double-layer stainless steel exhaust manifold. The exhaust manifold has a rear location on the transverse enginecompared to the front location for the previous engine, yielding important benefits such as better emissions performance. To lower vibration, Mitsubishi used a 4-point inertial axis system with cylindrical hydraulic engine mounts on the left and right sides.
A lightweight, high-rigidity squeeze-cast aluminium bracket on the right side mount engine side lowers engine noise under acceleration.
2010 Mitsubishi Lancer Muffler
A lightweight, high-rigidity steel plate bracket on the left side mount transmission side lowers gear noise. A custom-tuned insulator was developed for the front and rear mounts to help control both idle vibration and acceleration shock.
The 4B11T is the first engine in the Lancer Evolution series that uses a die-cast aluminium cylinder block versus the cast-iron block used in the previous turbocharged 4G63 engine that powered all previous models. A revised turbocharger offers up to percent quicker response at lower engine speeds compared to previous 4G A semi-closed deck structure, an integrated ladder frame and four-bolt main bearing caps contribute to engine strength, durability, and lower NVH levels.
Unlike the 4G63, the 4B11T does not use a balancer shaft. The semi-floating pistons of the 4G63 have been replaced with fully floating pistons for the 4B11T. Aluminium is also used for the timing chain case and cylinder head cover. The engine features an electronically controlled throttle, an isometric short port aluminium intake manifoldand the stainless steel exhaust manifold is positioned at the rear of the engine. The use of a direct-acting valvetrain eliminates the need of the roller rocker arm configuration previously used in the 4G The 4B11T features built-up hollow camshafts and its valve stem seals are integrated with the spring seats.
The internal components of the 4B11T engine have been reinforced to withstand high levels of boost. The cylinder head intake and exhaust ports and intake and exhaust manifolds are shape optimized for better volumetric efficiency. Mitsubishi lowered the friction of the engine by including elastic grinding of the valve stems, adopting a high-efficiency shroud equipped plastic impeller in the water pump and using 0W low- viscosity oil.
Mitsubishi increased the combustion efficiency by optimizing the design of the cylinder head intake and exhaust ports, by incorporating the MIVEC system on both intake and exhaust valves and by using injectors that give an ultra micro droplet fuel spray. To lower the engine's weight, Mitsubishi used die-cast aluminium for the cylinder block, plastic for the cylinder head cover and intake manifold, and stainless steel for the exhaust manifold. The engine features a compact balancer shaft module with an integrated oil pump.
A silent chain is used to drive the camshafts. The compact balancer module, the silent chain, the stable combustion yielded by the intake and exhaust MIVEC system, and high rigidity designs for the cylinder head and cylinder block realize low vibration and noise. From Wikipedia, the free encyclopedia. Retrieved Mitsubishi Motors technologies. Categories : Mitsubishi Motors engines Inline-four engines Gasoline engines by model.
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