N55s do burn oil but to my knowledge. However, its not nearly that much. Do not quote me on this, but I believe N55 burns about a quart per 10,000 miles.
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Is the BMW N55 engine reliable?
N55 Reliability Despite the many misconceptions that BMW’s as a whole are unreliable, the BMW N55 is actually a fairly reliable engine. The four most common problems with the N55 are, in no specific order, the valve cover and gasket, water pump, oil filter housing gasket, and VANOS solenoids.
How long do N55 engines last?
The BMW N55 motor should have no problem lasting over 150,000 miles, and some owners report getting over 250,000 miles out of their engines.
Does N55 have rod bearing issues?
The Problem Many BMW drivers with N55 engines have experienced engine failures and issues related to bearings inside the engine. When this occurs you’re often stuck looking at complete engine replacements and repairs totaling over $10,000 to fix the issue and repair all of the damages caused.
How long do N55 turbos last?
N55 Turbo Longevity at 20+ PSI In general, more boost will reduce the lifespan of the N55 stock turbo. However, it is possible for N55 turbos to last 50,000+ miles at 23psi, for example. On the other hand, the stock turbo may decide to let go much sooner even at 20psi.
Does N55 have injector issues?
Direct injectors are prone to carbon buildup and are subjected to a continuously brutal environment inside the combustion chamber of the engine. Fuel injectors in the BMW N55 engine are also prone to sticking open. This is a very serious condition where the injector continues to spray fuel into the cylinder.
How long do N55 injectors last?
The injectors in the N55’s usually last well over 200K miles.
How often should you change oil N55?
N55 oil changes should be done every 5,000-8,000 miles. Or once a year – whichever comes first.
Are N55 turbos reliable?
Both the N54 and N55 turbochargers are very reliable. The issue with the N55s is that they have weak internals. Make sure that the VANOS recall has been performed and don’t go overboard with tunes; N55 rod bolts are known stretch.
How common is N55 rod bearing failure?
Rod bearing failures on the EWG N55s are rare. Like you said, when they fail in the EWG N55s, it’s usually because of high lateral sustained Gs during track driving. The fix is the S55 oil sump parts swap. With that said, with your mods, you are pushing the safeguard limits of the N55.
Does N55 have wastegate rattle?
It rattles a little bit when full warmed up. Mine does it on startup as well. It takes about 15-30 seconds or so before the rattle noise goes away and the exhaust note changes.
Does N55 need walnut blasting?
If your N54 or N55 is built or tuned to make more power than stock, it might be wise to walnut blast the intake valves even sooner than what is recommended. This walnut blasting tool manufactured by TKL and sold by BMW makes cleaning the carbon buildup out of your intake valves a simple task.
How much abuse can a N55 take?
N55 Engine Limits – Quick Answer. The N55 can handle around 550whp and 550wtq on the stock engine block and internals.
Does N55 have timing belt or chain?
N55 did not have the same issue as the N20 engine. The timing chain on the n55 will last the life of the engine.
How often should you change spark plugs N55?
In most modern BMWs, manufactured after 2010 with the N20 or N55 engines, it is required to change spark plugs every 60,000 miles. For BMWs with V8, V10, or N54 or N63 engines, 37000 miles are the threshold before getting new spark plugs.
Does the N55 have an electric water pump?
The water pump used in the 2007-2015 N54 and N55 turbo 6-cylinder cars is electric and plays a vital role in managing temperatures for multiple systems throughout the car. However, because it’s electric, when it fails it does so completely and without warning.
Why is the N55 more reliable than N54?
There were less N55 models produced vs the N54 so you’re less likely to see as many negative posts. Most of the “issues” the early N54’s had were resolved with revised part numbers like the HPFP’s and injectors. The N55 learned from the N54’s mistakes.
Why does the N55 say twin turbo?
It has two separate turbos, each powered by 3 of the engines six cylinders. Both of the turbos on the N54 are of equal size and configuration. The BMW N55 TwinPower turbo is a single Turbo engine with two separate exhaust runners powering the hot side of the turbo.
When was the N55 discontinued?
Following the introduction of the BMW B58 engine in 2015, the N55 began to be phased out. BMW S55 engine is a high performance version of the N55 made by BMW M GmbH, which is used by the F80 M3, F82 M4 and F87 M2 Competition/CS.
Are N55 internals forged?
The N55 engines don’t have forged components like the N54 except for the crank.
Is the N55 closed deck?
The N55 engine family: Both engines are of OPEN DECK design, meaning that there is a space between the engine block and cylinders sleeves to cool the engine.
How much does it cost to replace valve cover gasket N55?
How much does it cost to replace my BMW N55 valve cover? If you plan to take your car to the dealer to have this job done, you can expect this to run anywhere from $1500 to upward of $2000.
Which is better N55 or B58?
As you can see, from very early on the B58 has big gains over the N55 which it holds right through the rev range. As you can see, the B58 has a very similar boost curve, but makes around 4PSI more than the N55 across virtually the whole rev range.
How hot does N55 get?
My N55 keeps oil temperatures around 240F mark during 4/5 trips. However, other times oil temp gauge sits at 210F (big middle mark, half way between 160F and 250F) while cruising. Dealer says its “normal” and both behaviors are within safe operating range.
Is N55 better than N54?
And, as already stated, the N54’s tune potential is better than the N55’s. I have driven 135is with both the N54 and N55 and own the N54 equiped version. My takeaway is that the N54 is indeed the better performing. My 135i has the GIAC tune with a ‘stock’ setting so when I compare it’s ‘stock’ to stock.