Bmw s55 engine

The S55 was introduced in in the F80 M3 and F82 M4 models, bmw s55 engine, based on the single-turbo N55 but with a raft of changes on board. Since its launch, it has found its way into the F87 M2 Competition in a slightly de-tuned form, as well as in slightly higher states of tune in the Competition and CS versions of the M3 and M4, while the hottest version was fitted in the M4 GTS. After almost 30 years of high-revving, naturally aspirated engines spread across four generations of M3, bmw s55 engine, with fours, sixes and eights found beneath their bonnets, the move to turbocharged power for the F8x generation of M3 and M4 was never going to be a popular one, but it was inevitable and very much a sign of the times. Bmw s55 engine a thought for both BMW and the S55 — piano roll chopper company and its new engine had an almost impossible act to follow, that being the mighty S65 V8.

The BMW N55 is a turbocharged straight-six petrol gasoline engine that began production in The N55 was BMW 's first straight-six engine to use a twin-scroll turbocharger. It also won three straight Ward's 10 Best Engines awards in — The main differences between the N55 and its N54 predecessor are the use of a single turbocharger, the addition of Valvetronic and the type of fuel injectors. Whilst the N54 used a twin-turbo arrangement, the newer N55 uses only a single twin scroll turbocharger. The piezo injectors were more expensive and BMW decided they were not worthwhile outside of Europe, because the potential benefits of lean-burn operation could not be fully realised.

Bmw s55 engine

The S55 debuted in and was the first mass-produced M Division engine with a turbocharger. However, devotees had nothing to complain about because the S55 was a fantastic engine and a good basis for the forced-induction engines that would likely power the M vehicles in the near future. Here's all you need to know about the BMW S The N55 debuted in on the F07 5 Series Gran Turismo as the German manufacturer's first mass-produced engine with a twin-scroll turbocharger. Despite being based on the N55 , the S55 has little similarities. Yes, the 84 mm bore, To begin, the two engines have different turbochargers: the N55 has a single twin-scroll turbocharger—the exhaust housing is divided into two "scrolls"—while the S55 has two turbochargers. Other improvements over the N55 include a closed-deck engine block, a reworked cooling system, and lighter and stronger engine parts, which we'll go over in more detail below. As previously stated, one of the most noticeable distinctions between the S55 and the N55 on which it is based is the adoption of a closed-deck crankcase design. The primary advantage over an open-deck design is increased stiffness, which allows for greater cylinder pressures and, as a result, more power production. The cylinder bores also have a twin-wire arc-sprayed coating, which is an atomized spray of metal that is more sophisticated but lighter than traditional cylinder liners. The pistons themselves are comprised of a friction-reducing Grafal-coated aluminum alloy. Finally, ventilation holes in the crankcase's bottom connect two sets of three cylinders for optimal pressure equalization. Every high-performance engine requires an outstanding heat-management system to function properly.

Since its launch, it has found its way into the F87 M2 Competition in a slightly de-tuned form, bmw s55 engine, as well as in slightly higher states of tune in the Competition and CS versions of the M3 and M4, while the hottest version was fitted in the M4 GTS.

I agree to the processing of my data in accordance with the conditions set out in the policy of Privacy. As the BMW S55 engine gets older, we are learning more and more about long-term reliability, common problems, and important preventative maintenance. It's no secret that aging high-performance BMWs need more maintenance than your average vehicle. Many older BMWs, especially M cars, have acquired quite a poor reputation for dependability - particularly when the miles start to stack up. But we don't think it's always deserved.

I agree to the processing of my data in accordance with the conditions set out in the policy of Privacy. As the BMW S55 engine gets older, we are learning more and more about long-term reliability, common problems, and important preventative maintenance. It's no secret that aging high-performance BMWs need more maintenance than your average vehicle. Many older BMWs, especially M cars, have acquired quite a poor reputation for dependability - particularly when the miles start to stack up. But we don't think it's always deserved. Sure, there are a few examples such as the rod bearings found in the BMW E60 M5's S68 V10 that would wear prematurely, fail, and cause catastrophic engine failure. The tabs on the camshaft hubs would break off, end up in the timing chain, and cause catastrophic engine failure. It's a similar story for the V8-powered E9X BMW M3 which commonly suffered from rod bearing failure, throttle body actuator failure, oil consumption, and more. Lots of these reliability issues aren't unique to BMWs but, for certain models, the failure rate was unnaturally high. That brings us to the S55 engine from BMW.

Bmw s55 engine

Its demise came at the hands of the S55 — the first mass-produced M Division engine to feature a turbocharger. The introduction of the S55 was a considerable step away from the kind of engines that typically powered a BMW M car. However, enthusiasts were left with little reason to complain as the S55 was a phenomenal engine and a solid foundation for the forced-induction engines that are likely to power the M cars in the immediate future. Although based on the N55, the S55 shares little in common. Yes, figures like the 84 mm bore, The core improvement that this brings compared to an open-deck design is added rigidity; this, in turn, allows for higher cylinder pressures and consequently more power output. The cylinder bores also featured a twin-wire arc-sprayed coating — an atomized spray of metal that is a complex but lighter solution than conventional cylinder liners. The pistons themselves are made of a Grafal-coated aluminum alloy that reduces friction.

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Right away, you should be aware that the S58 has the superior engine. The S58 is still a young engine, and we believe it will be some time before you can tweak it as much as you can the S The pistons themselves are comprised of a friction-reducing Grafal-coated aluminum alloy. However, there are some differences between the two in terms of performance and dependability. It offers the most comprehensive solution on the market at one of the most compelling price points. They truly are amazing cars and if you maintain them correctly will offer immense driving pleasure for many miles to come! Horatiu Boeriu. A cooler intake charge also allows for more aggressive tuning and higher boost levels. It debuted in the F Want To Access Premium Content? A spun crank hub will also throw up other engine problems that you should be able to spot; it will affect engine timing, send your M4 into limp mode, and most definitely light up the malfunction light. Accept Decline. Here are some additional things to keep in mind about the BMW S55 engine:. Most BMW main dealers will not touch this as the manufacturer claims many of their automatic gearboxes are "sealed for life".

The BMW N55 is a turbocharged straight-six petrol gasoline engine that began production in

An upgraded intercooler can reduce intake air temperatures and prevent heat soak, which can rob power from the engine. January 30, However, because most of the internals on the S58 are identical to those on the S55, many of the S55's issues — which we'll discuss below — are likely to be carried over to the S The crankcase is of a different design and specially cast by BMW for Alpina. The N55 debuted in on the F07 5 Series Gran Turismo as the German manufacturer's first mass-produced engine with a twin-scroll turbocharger. Interestingly, the N51 is near-identical to the N52, powering the same cars and available during the same […]. We recommend also replacing the valve cover as well whilst you're there as this too can fail over time - although far less common. The S55 that emerged may not have seemed all that impressive at first glance, seeing as it was based on the much-used N55 that had featured in numerous BMWs. The pistons themselves are comprised of a friction-reducing Grafal-coated aluminum alloy. With more extensive modifications, such as upgraded turbos and a built engine, the S55 engine can produce over horsepower.