Subaru press release: New boxers (Think FT-86) - MR2 Owners Club Message Board
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post #1 of 21 (permalink) Old October 17th, 2010, 21:23 Thread Starter
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Subaru press release: New boxers (Think FT-86)

Subaru debuts third-generation boxer four-cylinder engine
by Jonathon Ramsey (RSS feed) on Sep 23rd 2010 at 11:32AM


Subaru's Third-Generation Boxer Engine ? Click above for high-res image


Boxer lovers, the next chapter in your love affair has just begun. Fuji Heavy Industries, parent company of Subaru, has introduced the latest, third-generation boxer engine that will relieve the second-gen after 21 years of service. This is a brand new lump, not a rework, and FHI has built a factory just to produce it.

The bore and stroke have been increased, and it will be available with four cylinders in 2.0- and 2.5-liter displacements. The intake ports have been redesigned, lighter pistons and connecting rods offer reduced internal friction, and separate cooling circuitry for the block and the head are some of the changes that have resulted in a lower emissions and a ten percent increase in fuel efficiency. No power figures are being quoted yet, so we'll have to see how it measures up when it finds its way into production engine bays.

This new boxer will be Subaru's primary engine, and will first be seen in the Forester. Follow the jump for the press release, and you can have a closer look at it the high-res image below.


[Source: Subaru]
Show full PR textFHI Develops a New-generation Subaru Boxer Engine
New Horizontally-Opposed engine, providing superior combination of environmental friendliness and enjoyable driving

Tokyo, September 23, 2010 - Fuji Heavy Industries Ltd. (FHI) has developed its new-generation boxer engine* that combines the technology and know-how used in Horizontally-Opposed Boxer engines, the core technology that has supported Subaru's unique driving since it was first employed in the Subaru 1000 in 1966. This overall renewal is the first in 21 years, since the second generation boxer engine was introduced in the first Legacy models in 1989.

This new-generation Horizontally-Opposed 4 cylinder gasoline engine, the third generation Subaru boxer engine, showcases Subaru's latest engineering research and development. It offers a new performance level by further refining Subaru's unique expertise in Boxer engine technology. The engine was entirely renewed, starting from the basic structure, while all the advantages of the horizontally-opposed layout were maintained: lightweight, compact, low center of gravity, and superior vibration balance. New-generation improvements include advances in both environmental friendliness, such as an approximately 10% improvement in fuel efficiency, and driving performance for smooth acceleration in all speed ranges. Furthermore, FHI designed the new engine with consideration of the technology's expandability and potential capability to receive further upgrades meeting future environmental measures.

FHI built a new factory at the Gunma Oizumi Plant exclusively for the production of this new-generation boxer engine. This new plant offers state-of-the-art production facilities that make full use of FHI's engine manufacturing know-how developed to date, as well as a highly efficient production system delivering products meeting the highest quality standards.

Major Features of the New-generation Subaru Boxer engine
The overall structure of this engine has been totally renewed, by reviewing the bore and stroke for the basic structure to
allow a longer stroke than current engines. It is designed to achieve high efficiency in basic performance, allowing the
smooth and sporty rotational properties for which Horizontally-Opposed engines are known, while also making improvements in practical torque and environmental friendliness. This engine is available with 2,500 cc or 2,000 cc displacement, both with 4 cylinders. These models will now be positioned as our main engines.

The New-generation Subaru Boxer engine
・ The bore and stroke, the basic structure of this engine, have been reviewed to achieve a compact combustion chamber as well as a long stroke, which was difficult previously due to chassis mounting conditions in boxer gasoline engines. This allows high combustion efficiency, and generates a sufficient mid-low speed torque with improved fuel efficiency and practicality.
・ Improved fuel efficiency has been achieved through optimization of intake port configuration and the addition of partitions inside ports, the use of TGV (Tumble Generated Valve), and the use of an EGR (Exhaust Gas Recirculation) cooler.
・ AVCS (Active Valve Control System) is used on both intake and exhaust valves. For the intake side in particular, an intermediate lock system allows valve timing to be advanced or delayed for precise control over intake and exhaust valve timing, allowing maximum engine performance in output, fuel efficiency, and exhaust emission.
・ The use of lightweight primary moving parts, such as pistons and connecting rods, and a highly efficient and compact oil pump provides an approximately 30% reduction in friction loss and improves fuel efficiency and revolution response.
・ Cooling has been optimized by using separate engine cooling circuitry for the block and the head, resulting in improvements in fuel efficiency and output characteristics.

FHI is fully committed to develop new products on the theme of integrating enjoyable and reliable driving with environmentally friendly solutions. This same theme applies to this new-generation boxer engine, which will be
positioned as a main engine and the starting point of its future power unit strategy. Starting with the Forester, the new engine will be deployed in other Subaru products in the future.
* Boxer engine: Also known as a Horizontally-Opposed engine. In this design, the pistons are arranged symmetrically left and right along the crankshaft. When the pistons move, they resemble the punches thrown by boxers, thus resulting in this popular name.Filed under: Technology, Subaru

Tags: boxer, boxer engine, engine, flat four, flat-four, forester, fuji heavy industries, horizontally opposed, HorizontallyOpposed, subaru, subaru boxer, subaru forester, SubaruBoxer
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post #2 of 21 (permalink) Old April 8th, 2012, 09:23
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Has anybody heard when the BRZ or the FRs will be in showrooms. nice looking car! can't wait to drive one.
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post #3 of 21 (permalink) Old April 8th, 2012, 23:35
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I dont think the FT86 will ever be released...
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post #4 of 21 (permalink) Old April 9th, 2012, 12:44
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Isnt it already? I dont think its a concept car anymore and that you can pre-order them. In sweden its under "coming models", and not under concept cars (toyota.se)
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post #5 of 21 (permalink) Old April 9th, 2012, 14:25
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Next month.
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post #6 of 21 (permalink) Old April 10th, 2012, 00:48
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Quote:
Originally Posted by floridatropics
The bore and stroke have been increased, and it will be available with four cylinders in 2.0- and 2.5-liter displacements.
Both the bore and stroke have been increased yet it will be available in the same two most common subie displacements. Hmm.
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post #7 of 21 (permalink) Old April 10th, 2012, 21:16
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Quote:
Originally Posted by lexnap
Has anybody heard when the BRZ or the FRs will be in showrooms. nice looking car! can't wait to drive one.
April 20th the BRZ should arrive in NA.
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post #8 of 21 (permalink) Old April 11th, 2012, 09:05
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I think that press release from 2 years ago is not the same motor as the BRZ /FRS. The new impreza has a different 2.0liter motor than the 'sports car'.. it is still labeled an EJ. The BRZ motor is an FA or something different.. and the 86 is supposed to be the bore and stroke in mm... so not a longer stroke motor.
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post #9 of 21 (permalink) Old April 11th, 2012, 09:28
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Dyno of the FRS: http://www.youtube.com/watch?v=tMsRY...76FAAAAAHgAHAA

173whp, So basically bone stock MR2 power and weight with no options of adding significantly more power for any reasonable cost or while keeping your warranty.

1993 MR2 turbo build TBD....
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I am still alive, just busy with life. Still got the MR2 sitting the in driveway. Someday it will be back on the road. When that will be only God knows. It will be really fast when it is though.
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post #10 of 21 (permalink) Old April 11th, 2012, 09:51
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If it is a subaru ECU, then it will be reflashable / end user tunable with a $20 cable and an opensource program.. And subaru has all these other wonderful turbo motors that are expected to bolt to the tranmission. Also, the transmission is the same unit as from the IS350 , so it seems likely more power is in the schedule, otherwise why use a transmission that can handle double the torque? Other thoughts, can this bellhousing be used with other similar transmisisons to now mount subaru motors in other front engine rwd cars.. might open up a new realm of possible swaps / hybrids
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post #11 of 21 (permalink) Old April 26th, 2012, 01:18
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Quote:
Originally Posted by Jared
If it is a subaru ECU, then it will be reflashable / end user tunable with a $20 cable and an opensource program.. And subaru has all these other wonderful turbo motors that are expected to bolt to the tranmission. Also, the transmission is the same unit as from the IS350 , so it seems likely more power is in the schedule, otherwise why use a transmission that can handle double the torque? Other thoughts, can this bellhousing be used with other similar transmisisons to now mount subaru motors in other front engine rwd cars.. might open up a new realm of possible swaps / hybrids
who the hell is going to drop an EJ into a brand new car??? Only race teams and people with money to burn.

you are also wrong about the new wrx engines. They are FB series, while the BRZ gets a FA series. Technically, the FRS / GT86 engine code is 4UGSE.

Supposedly the ECU is different and has yet to be cracked.
post #12 of 21 (permalink) Old April 26th, 2012, 01:25
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Think you could buy a car off the lot with no motor for a little discount lol?
Maybe special order.
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post #13 of 21 (permalink) Old April 26th, 2012, 12:12
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just because it is a new car does not mean it is an expensive car to many people.. and it is definitely primarily a TOY vs a utility. Thanks for the clarification on the motor codes.
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post #14 of 21 (permalink) Old April 27th, 2012, 22:41
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Quote:
Originally Posted by Texas_Ace
Dyno of the FRS: http://www.youtube.com/watch?v=tMsRY...76FAAAAAHgAHAA

173whp, So basically bone stock MR2 power and weight with no options of adding significantly more power for any reasonable cost or while keeping your warranty.
Correct, but what you're not accounting for is torque curve. It makes the same whp as a stock Mk2 turbo, at the same displacement and weight, with NO boost. The value you put into that is up to you, but from where I'm standing it's a step in the right direction as far as drivability goes, particularly at corner exit. If I were building a strictly road course Mk2, I'd pitch the 3S right out the window and go 2GR for the low end torque. Just because it doesn't have the power potential of the turbo engines doesn't mean this engine doesn't have its own place in the performance world.
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post #15 of 21 (permalink) Old April 28th, 2012, 06:34
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This car will be very disapointing to those who think that race is 1/8-1/4 of a mile long and does not include any turns. Others will be very interested.
This car weighs less than an RX8. Costs less than an RX8. Makes about the same hp and torque(peak) and looks great. If this is it for the platform, then I hope it will succeed since it seems like a great car. If there is a trubo, SC, high output of some sort version, I hope that it is under $35k and close to 300 hp. If so, I would have to take a LONG look at one.
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post #16 of 21 (permalink) Old April 28th, 2012, 09:13
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Quote:
Originally Posted by mr2by4
If there is a trubo, SC, high output of some sort version, I hope that it is under $35k and close to 300 hp. If so, I would have to take a LONG look at one.
Ditto, If they release a turbo model I will be very interested in it, as it sits, doesn't do anything for me. Not an NA engine fan personally, much prefer some kind of boost. Pretty much neutral on it at this point in time, have to wait till I see it in person and drive it.

TRD: The beams also made about the same power with the same displacement so not exactly a big step forward.
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post #17 of 21 (permalink) Old April 28th, 2012, 11:11
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There is a trd supercharger option listed under study in scion option list.
http://www.ft86club.com/forums/showt...t=supercharger
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post #18 of 21 (permalink) Old May 26th, 2012, 09:57
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My BRZ is in the country and I should be taking delivery mid-June!

Now what to do with the MR2...
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post #19 of 21 (permalink) Old June 2nd, 2012, 23:14
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If only they put in the STi engine. =(
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post #20 of 21 (permalink) Old June 6th, 2012, 17:22
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Subaru BRZ

My daily driver is a Subaru and I stopped off to check out a BRZ they had in their showroom for a while; didn't care much for the interior, but overall - I think it looked even better in person than in the pictures. They weren't allowing any test drives, but all the magazine road tests have been raving about how well it drives. Please give us your review once you pick yours up!

Quote:
Originally Posted by Turbowned
My BRZ is in the country and I should be taking delivery mid-June!

Now what to do with the MR2...
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