First Subaru Diesel, a World First Horizontally Opposed Diesel

**parakitoJDM** · January 21st, 2008 10:37 PM

hi guys, u diesel freaks out there are probably awaiting how the Worlds First Horizontally Opposed (Boxer Engine configuration) diesel engine would be....
read on. looking good Subie....

taken fm. "http://www.autocar.co.uk/CarReviews/FirstDrives/Subaru-Legacy-2.0-TD/230393/"

What is it?

It’s what would be called sheer bloody-mindedness if it happened in Britain. Subaru only sells 600,000 cars a year; half in Japan, most of the rest in countries where you’d barely measure the interest in a small diesel engine with a micrometer.

Yet Subaru has just developed, on its own and purely because its European retailers asked it to, the first boxer diesel ever fitted to a car. Subaru might only end up making 30,000 units a year, in most countries the engine won’t be sold at all and its design is so restrictive that no other manufacturer will buy it.

Obstinacy? Not a bit of it, says Subaru, whose argument is this: our petrol engines are boxers because they’re light, compact, smooth and mate easily to a 4WD transmission if aligned just-so. So our diesels must be the same. Consider it, then, dedication to engineering rightness.

‘It’s Here’, is Subaru’s strapline. “Who cares?” will be the answer across 85 per cent of the planet. But here it is: the new Legacy 2.0 diesel.

What’s it like?
Worth the development money. Every bit as compact as Subaru’s petrol units, the new engine’s a horizontally opposed 2.0-litre, with equal bore and stroke and a very short crankshaft to limit vibration and noise.

It has alloy blocks/heads and a turbo tucked neatly near the exhaust valves. It looks – is – small; shorter even than the 2.0-litre petrol, with which it shares the same service intervals and, amazingly, weight.

It’s stronger than the petrol unit too. How come? “Honda’s (once-benchmark i-TDCi) diesel? Developed by petrol engineers,” says Toshio Masuda, engineering big-cheese of the Legacy. “Our diesel? Developed by petrol engineers.” And it shows.

It’s no less impressive when energised. This must be the quietest four-cylinder diesel family car around. Unlike most four-cylinder engines it doesn’t have balance shafts, so has less inertia and a better throttle response too. Around town you’re merely aware you’re in a diesel; never surprised by the noise, nor by a reluctance to rev.

At higher speeds it’s better still. At 148bhp the Legacy diesel is among the faster cars in this class and the power band is good. It could use, but doesn’t desperately need, the six-ratio gearbox the Forester and Impreza will have when they get this engine.

There’s respectable pull from a touch below 2000rpm (peak torque’s at 1800) and it revs freely, not noisily past peak power at 3600 before crying off at 4500. Those figures are relatively low – it has been tuned for (class leading) targets of economy and emissions, not power. The wick could be turned up easily and, later, it will be.

The rest of the Legacy wagon’s package is as-you-were. Averagely spacious, above-average-feeling interior. Dynamically, the only change is the fitment of electric, rather than hydraulic power steering - there isn’t much difference in feel and it’s still a very decent car to drive.

All of the engine and drivetrain’s mechanicals are within the wheelbase, so for a large estate the Legacy is an extremely agile one. It grips strongly, has exceptional traction, brakes well and doesn’t even mind being adjusted on the throttle. The ride’s good too and much the same is true of the Outback, only with taller suspension and a greater propensity to lean. A saloon isn’t available for now because of supply limitations and those, in truth, are the only real drawback. Some engine, this.

Should I buy one?
Traditionally, our answer here would be circumspect. A Subaru Legacy, we’d have said, is not for everybody; the limitations of its range sees to that. That’s not the case any more: Subaru deserves to sell as many of these as it can make.

Matt Prior

**Type 100** · January 22nd, 2008 12:20 AM

Hayup! I was just reading the same story on Autocar Online UK just now. Kudos to Subaru/FHI for sticking to their guns and developing the best diesel they can, bean-counters aside. :D

**theveed** · January 22nd, 2008 12:44 AM

Wow... Just wondering, di pala horizontally mounted yung Focus and other Euro 4cyl diesels? Never knew that. :P

**tip_tipid** · January 22nd, 2008 05:07 AM

did you mean horizontally opposed as compared to horizontally mounted..he he he. haven't seen a vertically mounted engine yet..ha ha ha

**HyBrideVo** · January 22nd, 2008 06:05 AM

Originally Posted by theveed

Wow... Just wondering, di pala horizontally mounted yung Focus and other Euro 4cyl diesels? Never knew that. :P

Originally Posted by tip_tipid

did you mean horizontally opposed as compared to horizontally mounted..he he he. haven't seen a vertically mounted engine yet..ha ha ha

:fyi:

Subaru Boxer engines are Horizontally opposed thus we call it an H engine and it is Longitudinally mounted. The Focus and like all other FWD based vehicles are mostly Transversely mounted which often has an Inline four engine or with a transversely mounted V6 engine..

**theveed** · January 22nd, 2008 08:10 AM

Ah got mixed up for a minute, thanks for the clarification HBV

**juntzo** · January 22nd, 2008 09:12 AM

Originally Posted by HyBrideVo

:fyi:

Subaru Boxer engines are Horizontally opposed thus we call it an H engine and it is Longitudinally mounted. The Focus and like all other FWD based vehicles are mostly Transversely mounted which often has an Inline four engine or with a transversely mounted V6 engine..

that's why it is called symmetrical awd!

the subaru boxer engine also produces the best sounding engine in my opinion... the boxer burble at idle, the boxer rumble in cruise and the boxer growl in wot!

worth every penny for me!

(end of fanboi rant!)

i just hope they will bring the diesel boxer to the US soon and make it to all the states! hopefully even in here in the Philippines. diesel forester would be nice!

**pup2** · January 22nd, 2008 12:47 PM

I guess Subaru (also) sees CRDi clean diesel as the near future of motoring.

Sana nilakihan ng konti yung displacement. Parang maliit eh. Ano kaya hp output nun?

**Bogeyman** · January 22nd, 2008 01:20 PM

Originally Posted by pup2

Ano kaya hp output nun?

Subaru Legacy Diesel

Top speed: 126mph
Output: 148bhp
Torque: 258lb-ft
Fuel mileage: 49.6mpg (mixed city/highway driving)
CO2 emissions: 151g/km
Acceleration: 0-62mph in 8.5 seconds

http://cars.uk.msn.com/Reviews/artic...mentid=7283675