The D-4S engine?

So in February 2009 it was almost confirmed by next Toyota president that the engine code will be D-4S for the Toyota FT-86. Boxer flat four or Inline 4?, maybe V6? Probably with 8 injectors (4 at cruise/idle, 8 at boost?).
Wether it makes to the FT-86 or 216a or not, let's gather some information about the engine.


Toyota still has time to decide and probably will listen to the community. The engine bays are always similar and easy to adopt for different engines.
While boxer type would be ideal for weight distribution, inline-4 for power and low weight, they might also go for V6.
It really depends what the model will be called later. I cannot imagine a Toyota with a boxer type sound. It belongs to subaru cubic type cars (no offense here). If they go Inline four, it could be called next Celica. While I personally wish it was 3SGE with 3SGTE for the sports version, it will never be as 3sgte is far from "green".

This is what really Toyota is going for:

Toyota might put a bigger size V6. Also the V6 sound would really fit the exterior design of the car. Something like the 5VZ-FE with all the direct injection and dual VVT-i. Then add a supercharger or turbo for sports version (there`s an intercooler front mount on the G Sports edition). That would be a good deal - good fuel economy, 200hp at lower revs and 350hp at high revs with the Forced Induction. While hurting weight distribution, it would gain in torque + power and the FT-86 could afford the heavy consumer accessories. That would be a "green" and powerful car, but the FT-86 is intended as a track car (note the track map on the gauge cluster LCD display)

Read more about Toyota engines here:

But then again, Toyota has been working on the new D-4S engine for years and they might come up with something totally different.

They might just put a highly revised inline 4 to save weight and space and let the tuners do their thing. That would be a true Toyota reincarnation of AE86 and Celica spirit that they`ve lost in the last decade, but now the import tuner culture has grown pretty much.

Well now it is almost certain that the G Sports series FT-86 will sport a horizontally opposition 2 liter boxer engine, 4 cylinders and will have turbo with FMIC. ([url=][... will see if it is direct injection or not and how it impacts tuning. Since the Gs FT86 will be available only in JDM, we will have to rely on their findings, if The Gs project is launched sooner or at the same time as FT-86. Anyway, the Gs Concept is said to be based on the original FT-86 Concept car with additions of turbo, interior and exterior upgrades....
So probably the NA version will be the same engine without the turbo and probably very underpowered.
We can hope that the car comes out really underpowered thus being good for emissions control, but with very accessible ECU for tuning, since this will be a tuning community car anyway. Let`s hope that everything on the engine stays the same as on the turbo engine and only ignition timing maps are modified for the naturally aspirated engine.

D-4S engine screenshot from Gran Turismo 5, click to see get full size photo.

D-4S horizontally opposed boxer engine in Toyota FT-86, snapshot from Gran Turismo 5

this page confirms that it is a horizontally opposed 2liter gasoline engine, at least the FT-86 Concept version..

What about the engine & gearbox placement? It has to be badly placed for rwd if they`re going to adopt it for AWD just by adding halfshafts to gearbox? But if the engine/gearbox is far behind the front wheels it would be very good for weight distribution but impossible to add AWD transfer box to the same platform?

Thats why there was speculation: [url=]Toyota FT86 and Subaru comparison[/url]


IMO the Subaru version should really have totally different chassis, engine/gearbox position moved more to front. That would require reworking the gearbox and shifter position (or do cable-type shifter), longer propeller shaft, longer front of the car. If the Subaru version ever comes out :D If the FT86 is made to easily adjust for AWD box, then we`re screwed :/

As for the 4cyl engine - many see the use of Subaru 1,994cc engine as a strange choice, since it's not especially sporty in non-turbo trim. But we have to remember that the car should be low budget, so big engines are out of an option. Compare the powers with original AE86 4AGE engine! Of course time has passed and engine efficiency has grown considerably, especially with the direct injection. But at the same time the car weight has increased with all the safety and multimedia features. We`ll just have to wait and see how much engine configurations the FT-86 will feature.. Look at the Hyundai Genesis, it has 2liter inline 4 banger that allows for turbo tuning and a bigger 3.8 liter NA monster..

learning from Gran turismo 5 footage the stock FT-86 concept redline is 8500rpm. EJ20 engine redline is 8000rpm..

Here is a comparison of Toyota FT-86 and 2008 Subaru impreza engine and drivetrain placement. Notice how much better it is for the FT86, no problems with weight distribution...


FT-86 engine D-4s underside, Geneva 2010 photo via [url][/url]

toyota ft-86 concept engine, d-4s engine, ft-86 engine

toyota ft-86 concept  radiator grille GENEVA 2010 GENIVRA

oooh, the concept does have an engine! :D

[quote=MrVito]I'm convinced that the FR-S/FT-86/216A/Subuyotion/Scioyobaru/Mutant baby is basing it's handling and speed goals off of the N/A Mk IV Supra. Considering it's been spotted at the Nurburgring testing with a white one, which also happens to park at the same garage where the camo'd coupe does. It's been rolling around with a Cali with a Porsche Cayman, which, even in it's lowest trim is still 265hp, 2900 lbs. This is interesting to me because the US spec TT Supra was 10.625lb/1hp, whereas the base model Cayman is 10.94/1. If the given specs are anywhere near accurate, the new rwd coupe will be about 200hp @ 2800lbs, making it 14/1. If we were to assume approximately 100lbs more for a turbo, intercooler, additional piping, etc, and a target of 11/1 to put it in the same neighborhood as the Cayman and TT Supra, it would need 264hp at the crank. This seems easily doable. now if the N/A mk IV Supra is the goal, it was 14.5/1, meaning the N/A Toyobaruion is already beating it in the power to weight department.

264hp out of a 2.0 boxer with all associated emissions equipment should be relatively easy to pull off, not to mention improved gas mileage due to lower power requirements than the jdm two liter motors, direct injection, and only having to turn one differential and two wheels. I would wager that if/when the turbo model is released, it will be rated at 264hp, +or- 10hp.

The direct injection/port injection setup is interesting, but I wonder which will be the primary method of fuel delivery. If the DI is only being utilized for cooling and improved fuel mix, well, sadface, hopefully DI is the primary fuel delivery method. For an example, look at the power levels being supported by the factory DI setup on Solstice GXP/Sky Redline.[/quote]

the d4-s boxer engine by subaru and toyota

Some engine bay shots of Subaru BRZ D4-S motor, photos from Tokyo Motor Show 2011

Subaru BRZ engine bay d4s motor 08 - Subaru BRZ engine bay d4s motor 08 photo

Subaru BRZ engine bay d4s motor 07 - Subaru BRZ engine bay d4s motor 07 photo

Subaru BRZ engine bay d4s motor 06 - Subaru BRZ engine bay d4s motor 06 photo

Subaru BRZ engine bay d4s motor 05 - Subaru BRZ engine bay d4s motor 05 photo

Subaru BRZ engine bay d4s motor 04 - Subaru BRZ engine bay d4s motor 04 photo

Subaru BRZ engine bay d4s motor 03 - Subaru BRZ engine bay d4s motor 03 photo

Subaru BRZ engine bay d4s motor 02 - Subaru BRZ engine bay d4s motor 02 photo

Subaru BRZ engine bay d4s motor - Subaru BRZ engine bay d4s motor photo

2.0L D4-S (86/brz):


1.6L DIT (subaru says nothing about which car will use this)


probably the 2.0L D4-S could also use a front mounted turbo with custom exhaust headers..

Toyota 86 engine bay pic
Toyota 86 engine bay photo - Toyota 86 engine bay photo

For those that are wondering - The big hose teeing off the intake looks like it's piping sound to the interior. This is a relatively common thing these days. When the intake is placed way up in cold-air land forward of the radiator, the only way to get good intake honkus sounds to the guy making the payments is to pipe the sound in through a membrane (kinda like a rugged speaker cone with no driver) that lets sound pass through without letting unfiltered air slip by. Miatas use these, Mustangs use these, and they're quite common in Europe where drive-by noise regulations make it nearly impossible for a car to sound good without one.
The lack of a power steering pump indicates electric power steering. The fact that it's nearly 2012 also indicates electric power steering. Hope it doesn't suck.
(from John N. Frink )