In early model BMW’s, such as our favorite E30 M3, engine timing adjustments had to be done by hand with a special tool. Variable valve timing is the solution to this problem, and just about every manufacturer has their own technology for it. Variable valve timing allows for timing adjustments to be made electronically and…
Cost to Own a BMW 335i N54 When it comes to owning an N54 powered BMW 335i many are driven away due to concerns over the cost of repairs and maintenance. Reliability is a case by case basis; some may experience endless issues while others may go 100,000+ miles without any significant problems. A majority…
BMW’s “TwinPower Turbo” designation has created some confusion, and even lawsuits accusing BMW of false advertising. This is because TwinPower Turbo does not necessarily mean the engine is truly twin turbo; it is simply a twin-scroll single turbocharger. Albeit, a twin-scroll turbo is a more efficient design than a single scroll turbo. To understand the…
Ever since the twin-turbo N54 hit the market in the 2007 BMW 335i, BMW has been building on the design of the turbocharged, direct-injected inline 6 engine. In 2010, the 335i received the updated N55 engine followed by the B58 in 2016, however, the model was rebranded to the 340i. Unsurprisingly, the success of the…
BMW’s N52 engine is one of its most successful, and most produced inline-6 engines. The N52 was predominately found in the E90 325i, 328i, 330i, and the E60 525i and 528i models, as well as various others such as the 128i, X1, and Z4, to name a few. The N52 was produced from 2004 until…
The BMW N20 is a 4-cylinder, turbocharged engine produced from 2011-2017, and was BMW’s replacement for the naturally aspirated 3.0L 6-cylinder N52/N53 engines. As the outgoing N52 and N53 were reliable engines, the BMW N20 had big shoes to fill, especially given its turbocharged design. Turbo engines are more complex and require several additional components,…
BMW’s N20 engine featured in the 228i, 328i, 428i, 528i, as well as other 28i variants, did not built up the greatest aftermarket and tuning reputation, as the engine has been touted as fragile. Although the N20 is not the strongest motor there is still plenty of power to be unleashed with a tune and…
For those in the market looking to purchase a BMW 135i, 335i, or 535i one important aspect to consider is reliability. In this post, we intend to highlight the most common N55 engine problems; please keep in mind – this is not an exhaustive list of every single potential problem. All cars and engines will…
We wrote a similar post for the N54, which seemed to be a popular and informative post for those looking to learn more about the engine’s capabilities. For those who read our post about the BMW N54, it should be noted the BMW N55 engine is not quite as capable as the N54, mod-for-mod, for…
The BMW N55 engine represented a big step forward in terms of BMW’s turbocharged engine formula. The N54 inline-6 that preceded the N55 in 35i model BMWs became both an icon and a black sheep due to its power potential and subsequent unreliability. The N55 resolved most of the major issues with the N54, but…
Signs of N55 Water Pump Failure: Engine overheating significantly – usually rapid over-heating once the pump fails Cooling Fan running full speed (noisy) Coolant boiling out of coolant cap N55 CEL Codes for Failing Water Pump: 2E81, 2E82, 2E83, 2E84, 2E85 377A Remember to check fuses Replacement Part Water Pump for E-series N55 – $389…
The B58 is the successor to the N54 and N55 engines, both of which were highly tune-able and able to make lots of horsepower with only a handful of supporting mods. The N54 takes the cake in regards to horsepower capabilities, but it had many engine problems as a result. The N55 platform was made…
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