By all means, the engines are identical, except for the EVAP system and the catalytic converters. The N26 engine uses higher density (read: more restrictive) CATs, which robs power from the engine at high rpm. The N26 CATs have 900/600 cells/sqin, while the N20 CATs have 600/400 cells/sqin.
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Is the n20b20 a good engine?
As discussed throughout this article the BMW N20 is an overall reliable engine that does not have many common issues. The timing chain and components may be problematic on models prior to 2015, but has since been resolved with an updated design.
How reliable is the BMW B48 engine?
Yes, we believe the BMW B48 is a pretty reliable engine. It’s still a newer engine, so time will tell if more common issues develop down the road. BMW reliability seems to be trending in the right direction, though. At least when you compare the B48 and B58 reliability to that of the earlier N54, N55, N63, S65, etc.
Which BMW engines have timing chain issues?
BMW timing chains have snapped on a range of models across the 1, 3 & 5 Series, most commonly affecting the N47 diesel. We also rebuild M57 & N57 diesel engines, BMW petrol engines & also BMW Minis. The timing chain is located at the rear of the engine bay and is not intended to be a serviceable part.
Is the N26 a good engine?
The N26 injectors are “sorted” and may show to be more reliable than N20 or N55 injectors in the long run. Otherwise, the N20 and N26 produce the same peak power and torque from the factory. They share over 95% of the same parts. Both the N20 and N26 are excellent, sporty, and efficient BMW engines.
How long will N47 engine last?
200,000 miles N47 engines have no other design issues and can easily run 200,000 miles if maintained correctly plus it is your original engine with traceable service history and mileage.
When should I replace my N20 timing chain?
On the BMW N20 engine, timing should be replaced every 100,000 kilometers. The automaker indicates this period, because the oil temperature is high and the plastic guides deteriorate quickly. To prevent engine damage, the BMW N20 timing chain should be replaced when mileage has not reached 100,000 kilometers.
Is the B48 underrated?
The B48 is already proven as underrated from the factory making 220+whp and 240+wtq stock. Tune only cars are able to push over 260 wheel horsepower and 290 wheel torque.
Who makes the B48 engine?
The B48 is part of a modular BMW engine family of 3-cylinder (B38/ B37), 4-cylinder (B48/ B47) and 6-cylinder (B58) engines, which use a displacement of 500 cc (30.5 cu in) per cylinder.
Is the B48 better than the N20?
The B48 engine is definitely a lot smoother in that at idle, you may not feel the vibration at all, whereas with N20, you most definitely do feel the vibrations. B48 feels more refined, but when I put the pedal to the metal, it took a little longer for turbo to spool up and the car to actually go compared to my N20.
Which BMW engine is the most reliable?
- BMW B58 Engine.
- BMW M20 Engine.
- BMW M50 Engine.
- BMW S62 Engine.
- BMW N52 Engine.
- BMW M54 Engine.
How long should a BMW timing chain last?
BMW use timing chains in almost every model of engine that they produce. It is recommended to replace your timing chain before failure as repair prices can become very high from internal engine damage if left. The average life of these timing chains is 90,000 miles or 9 years.
What model BMW is the most reliable?
- BMW 318i. Prior to 2002, the BMW 318i was also known as the E46.
- BMW 325i. Instamotor.com rates the 2005 BMW 325i as one of the best BMW’s ever made.
- BMW E90 328.
- BMW F40.
- BMW 528i.
- BMW i3.
- BMW X3.
- BMW 750i.
Is the N26 twin turbo?
N26 Engine Features By using the latest technology TVDI (Turbocharged Valvetronic Direct Injection) in conjunction with a TwinScroll exhaust turbocharger, it is now possible to decrease emissions substantially, while at the same time maintaining the same power output as the N20.
What cars have N26 engines?
2012-2016 F30 328i / 328iX (USA only) 2012-2016 F22 228i / 228iX (USA only) 2014-2016 BMW 4 Series F32/F35/F36 428i SULEV (USA models)
Is BMW N47 engine reliable?
N47C (03/07) engines are safe as they have rectified the parts which break and lead to timing chain failure. All the 5 series 320D suffer from timing chain issues, as they never had N47C. So if you wish to go for 320D, then make sure it has N47C.
Why do N47 timing chains fail?
The N47 timing chain premature failure comes from the weak tensioners fail to apply proper tense onto the chains. Over time, the chains are getting slacked and getting loose. The loosen chain will cause the sharp rattling sound. Normally the rattling noise is coming from the rear part of the engine.
How many miles will a 320D do?
The BMW 3 Series can last between 200,000 โ 250,000 miles when properly maintained and driven conservatively. If you drive 15,000 miles per year it will last approximately 13 โ 17 years before requiring expensive and uneconomical repairs. There are instances of 3 Series reaching up to 300,000 miles.
How do you take care of a N20 engine?
N20 Oil Change Interval (OCI) We recommend changing the engine oil on the BMW N20 every 5,000 to 8,000 miles. It’s also a good idea to change the oil every 12 months even if the mileage has not been exceeded. Specific oil change intervals also slightly depend on personal driving style and habits.
How much does it cost to fix BMW timing chain?
Cost at the Mechanic: $1,624 to $1,879 This is a pretty intensive maintenance/repair task that can take a mechanic several hours to complete. Your BMW timing chain should be replaced every 100,000 miles to keep your car healthy.
How do I inspect my N20 timing chain?

How much boost can a B48 handle?
The B48 stock boost is roughly 12-13psi.
Does the B48 have an intercooler?
The B48 top mount air-to-water intercooler uses a front mount heat exchanger to cool charge air temps. Basically, coolant circulates through the heat exchanger for cooling and then runs into the top mount IC to cool the charge air.
Is the B48 closed deck?
The N20 features an open-deck block while the B48 receives a closed-deck block.
Is B48 direct injection?
Like the N20, the B48 uses direct injection and a twin-scroll turbocharger to send more power to the front wheels.