BMW S65B40 is a 4.0 -liter V8 V8 that operates E92 M3, E90 M3 (sedan), and E93 M3 (convertible) from 2007 to 2013. This was the high V8 by S54. It is also one of the most exciting engines that BMW made ever, and only the famous M3 used V8S once.
The S65 is designed as a lightweight and high -performance engine, characterized by individual strangulation bodies, a red line 8400 rpm, and a design inspired by motorsport. Although it provided raw energy and a delightful driving experience, it also developed a reputation for specific reliability concerns. In this article, we will dismantle the S65 engineering, reliability issues, the ability to control and fuel efficiency.
| specification | BMW S65B40 |
|---|---|
| Settings | Of course, V8 was inhaled |
| Displacement | 4.0L (3,999CC) |
| X stroke cavity | 92.0 mm x 75.2 mm |
| Pressure | 12.0: 1 |
| Power out | 414 HP (420 PS) @ 8,300 rpm |
| Torque | 400 nm (295 pounds) @ 3,900 rpm |
| Red line | 8400 rpm |
| Valterreen | DOHC, 32 valve, dual lantern |
| Fuel | Multi -point fuel injection |
| Material block | Aluminum |
| Head materials | Aluminum |
| weight | ~ 202 kg (~ 445 pounds) |
| Transmission options | Hands 6 speeds or 7 DCT (Getrag M-DCT) |
The S65 is characterized by a cavity and stroke, allowing it to retreat freely while maintaining a strong force curve. The dry lubrication system in the V10 S85 of BMW was deleted for cost reasons, but the S65 still has a semi -dry pelvic lubrication system to improve high -capacity G.
BMW S65 engine versions
S65B40
- Disclosure: 3,999 cm (244.0 cubic meters)
- Energy output: 309 kW (420 ps; 414 hp) @ 8,300 rpm
- Portfolio: 400 n⋅m (295 lbs) @ 3,900 rpm
- Productive years: 2007-2013
- Breeding and Stroke: 92 mm (3.6 inches) x 75.2 mm (3.0 inches)
Applications:
- 2008-2013 BMW E90/E92/E93 M3
2009-2014 Wiesmann MF4-S
S65B44
- Disclosure: 4,361 cc (266.1 Cu in)
- Energy output: 331 kW (450 ps; 444 hp) @ 8,300 rpm
- Portfolio: 440 N⋅M (325 lbs) @ 3,750 rpm
- Productive years: 2010-2012
- Breeding and Stroke: 92 mm (3.6 inches) x 82 mm (3.23 inches)
- Features: Flasting stroke to increase displacement and lightweight titanium exhaust system
Applications:
- 2010-2011 BMW E92 M3 GTS
- 2011-2012 BMW E90 M3 CRT Sedan
Reliability: common issues and reforms
The S65 V8 is one of the most intense BMW engines – but it is also notorious for maintenance costs and some concerns related to the main reliability. Although it is a naturally strong V8, it contains its fair share of weaknesses that can lead to expensive repairs if it is not eaten in time. Let’s dismantle the most common S65 problems, causes, and how to prevent them.
1. Wearing a pregnant woman (the largest case)
- The problem: The factory rod bearings are a well -known weakness, and premature corrosion often appears due to narrow mixtures and insufficient lubrication.
- Symptoms: Metal shaving in oil, or kicking sounds, or catastrophic failure in extreme cases.
- The solution: It is highly recommended to replace the penis loader about 60,000-80,000 miles (100,000 – 130,000 km). Many owners choose to be a bear or motorsport
2. The stifling engine failed
- Problem: Electronic suffocating playgrounds for e -mail due to internal gear failure or multi -chlorine vinyl degradation, often leads to lameness and error symbols (2B15, 2B16, 2B21).
- The solution: rebuilding or replacing the stifling engines. The rebuilding units of the UK or Live -ups are constantly repaired by OEM alternatives.
3. ICV (ICV) failure (ICV)
- Problem: lethargy problems, harsh rift symbols, or symbols related to air control.
- The solution: ICV cleaning may help, but in some cases, it is necessary to replace.
4. Vanos system issues
- Problem: Vanos file can fail over time, leading to energy loss, harsh lethargy, and error symbols.
- The solution: Cleaning or replacing the Vanos file can help, and the upgrade can lead to newer versions to improve reliability.
5. The weaknesses of the cooling system
- Problem: The water and stroke pump can fail over time, which leads to a high temperature.
- The solution: Replacing the water pump proactively every 60,000-80,000 miles to prevent temperature problems.
6. Carbon accumulate on clouds valves
- Problem: Unlike direct injection engines, the S65 is injected, which means that it does not suffer from severe carbon accumulation. However, high miles engines may develop some deposits.
- The solution: Rarely is needed to clean the manual entrance but it can be useful.
7. Holder and budget web clothes (especially with DCT cars)
- The problem: OEM and the episodes wearing quickly, especially if it is strongly driven.
- Symptoms: sliding (in handcraft), harsh transformation (in DCT cars), extraordinary noise while participating
Why do E9X M3 have a good reputation?
E9X M3 itself is not unreliable in nature, but high maintenance costs and engine problems make it less attractive to the ordinary owner. When compared to other high -performance cars, they are more reliable than E60 M5 (S85 V10) or BMW, which is N54, but still require preventive maintenance and a suitable budget.
Setting capabilities: How much energy can S65 deal?
S65 has already been significantly improved from the factory, but there are some NA control options and forced incitement.
1. Modifying aspiration naturally
Since the S65 is already high, the NA setting achieves modest but noticeable gains.
Melody modification and exhaust:
- ECU TUNE (ESS, BPM, EvOLVE, VF Engineering) → +20-30 Hp
- Test tubes or high-flowing cats → +10-20 hp
- Full exhaust
- Carbon (Eventurei, Macht Schnell, Dinan, CSL) → +10-20 hp
- Presidents and cameras of transport → +40-50 hp (high-cost modification, race level)
- NA direction: 450-480 hp
2. High shipping
- ESS VT2-625 Kit (~ 6-7 Psi Boost) → 600 HP
- Gintani or VF Engineering Supercharger → 550-650 hp
- I built a engine and high supply group (~ 12 pounds) → 700+ hp
All these adjustments may exceed the engine capacity to be careful.
3. Driving modification
Since the S65 loves the courses, the shorter leadership rates (4.10 or 4.30) make a big difference in acceleration.
Fuel consumption efficiency
BMW S65 V8 is famous for the poor fuel consumption efficiency, which is expected to look at its high normal and design of motorsport. With an official classification of about 14-16 miles per gallon combined, real world characters often decline, especially while vibrant driving. In the city, the S65 usually runs 12-14 miles per gallon, while driving on the highway under the suffocation of the suffocating can result from 18-21 miles per gallon at best. The lack of abolition of the activation of the modern cylinder or turbocharged means that the engine consumes constantly fuel, even in low loads. Malcon who follow their cars or drive their cars strongly will see worse numbers, and sometimes less than 10 miles per gallon. Although fuel costs are a negative side, most enthusiasts consider it a fair comparison of the glorious V8 natural experience provided by the S65.
Is BMW S65 a good engine?
BMW S65 V8 is a engineering masterpiece-a naturally inspired engine, inspired by motorsport, provides an unforgettable driving experience. However, it comes with noticeable maintenance requirements, bars and suffocating players are an inevitable elements.