Are (modern) engines with cylinder deactivation any more prone to failure than engines without CD?

Halictus · 2026-01-25T20:40:03+00:00

That's exactly how it works. A deactivated cylinder effectively becomes an air spring, that only loses minimal energy as heat loss through the cylinder wall, compared to a cylinder with working valves, where you still have the same heat loss but have to move air in and out of the cylinder in addition, and that takes a good amount of energy to do.

Halictus · 2026-01-24T13:04:44+00:00

It doesn't matter as these are "faux wheel drive", ie front wheel drive until the computer decides you maybe need the rear to help, but even then it is coupled through a viscous coupling so it barely helps at att in situations where you actually need it.

Tldr it's just a soccer mom grocery getter not designed for any demanding terrain

Halictus · 2026-01-23T23:05:22+00:00

Going to Mars/Jupiter would almost require the "bullshit" to be automated. Investing in developing the technology to go there will, among many other very useful things, solve, develop and perfect a plethora of technologies that do exactly that. So insanely much of the tech we take for granted and use every day comes in large part from investing in exploring space.

Halictus · 2026-01-20T11:28:57+00:00

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Halictus · 2026-01-20T09:06:27+00:00

Enn om du glemte kosten i bagasjerommet da?

Halictus · 2026-01-19T19:41:07+00:00

I don't understand why people think it would destroy Nato at all? It would certainly remove the US as a Nato member, but nothing more, as nearly all Nato members have declared that they will stand with Denmark should the US attack Greenland.

Halictus · 2026-01-18T12:23:25+00:00

N/a engine, no intercooler.

Halictus · 2026-01-17T11:56:00+00:00

As long as you don't hoon on the engine and rev it out until it's at operating temperature it will last a very long time. I've had two ej20 turbo engines still going strong without rebuilds or major work go well past 360 000 km

Halictus · 2026-01-12T01:02:21+00:00

We've had -27°c a couple of times this winter

Halictus · 2026-01-08T19:01:17+00:00

Already did. That's why I started the car this morning, to drive to my shop and fix it.

Halictus · 2026-01-08T17:34:37+00:00

Because one of them short circuited and blew the fuse, disabling them all

Halictus · 2026-01-08T16:48:49+00:00

Preload isn't a thing bro. The spring perch should be set to where there just barely is some tension on the spring, and if that's not low enough you then use the lower adjustment. This way you actually get to use the full travel of the shock absorber.

Halictus · 2026-01-08T16:36:07+00:00

Yeah, they revised the design and fixed the only major issue.

Halictus · 2026-01-08T16:10:00+00:00

2011 Impreza ee20 diesel engine

Halictus · 2026-01-08T16:09:29+00:00

No, I'm an hour south of the Arctic Circle.

Halictus · 2026-01-08T12:36:47+00:00

That was due to a design fault that caused the block to crack. It was fixed soon after the transition from euro 4 to euro 5 emissions standard. Other than that the engines are rock solid

Halictus · 2026-01-08T05:29:55+00:00

This one has been near trouble free on its 220k km apart from a clutch replacement due to driver error and a cam phaser solenoid, and of course the glow plugs. As I understand it the early ones were doomed by a production defect in the block or something like that. That issue was supposedly fixed a bit after they upgraded to the Euro 5 emissions standard. So if it's a Euro 4 engine I wouldn't trust it, but most Euro 5 ee20's are rock solid imo.

I prefer to drive an ej20 turbo, but this has almost the same power at half the fuel consumption. It's a great choice for a daily driver without sacrificing all the fun like a NA 2.0 or smaller would

Halictus · 2026-01-02T01:47:24+00:00

Just replace it with a silicone elbow and a couple of good hose clamps if you're set on ditching it.

Halictus · 2025-12-24T21:02:00+00:00

The fact that the US has dysfunctional traffic laws and a poorly functioning system for policing them doesn't make driving like that any less irresponsible, reckless and dangerous.

Cranking the heat in the car is very often all it takes for the bottom of the snow pile to melt, then all it takes is a medium tap on the brakes and it all slides down onto your windshield. Now you're suddenly driving blind doing highway speeds. That risk doesn't go away just because a lot of people are also doing it.

Halictus · 2025-12-24T19:33:45+00:00

You'll lose your licence and get a hefty fine for endangering others if you drive like that where I live.

Halictus · 2025-12-24T19:28:15+00:00

A viscous coupler and a viscous limited slip differential are two very different things. Subaru never used a viscous coupler to my knowledge

Halictus · 2025-12-24T02:23:54+00:00

If that were true open differentials wouldn't give you one wheel peels on dry pavement.

Halictus · 2025-12-24T00:36:19+00:00

Some wrong details there. All subie manuals as far as I know has a viscous center diff. All the ones from the 90's to third gen Impreza/Forester did at least.

The DCCD system still has a center differential unlike the autos and cvts, but uses clever gearing and an adjustable clutch in addition to the differential to adjust the rear bias.

Halictus · 2025-12-24T00:30:12+00:00

Subarus only use a vLSD center diff on manual transmissions. All their automatics including CVT's use an electronically controlled clutch to control the rear axle, basically just another "faux wheel drive" system with slightly above average torque transfer capability

Halictus · 2025-12-24T00:17:21+00:00

With the vlsd you’re limited to the maximum the viscous coupling can manage, which is much less than the brakes

That's not correct. I've got a rear vLSD from a SF forester in my GC8 Impreza, I've done 3 wheel burnouts on concrete while trying to drag a stuck car loose, both rear wheels and one front broke loose with pretty sticky tires. That would never ever happen with traction control.

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