2JZ or EJ25??

[ej25ti]

So with the recent failures in FI... I've been thinking about swaps
even though, i prob wont, hah
but so far we see GReddy with their cosworth ej25 swap, but now soon hopefully we'll see Aasbo's 86 with a 2jz!
Sooo which you guys think for a swap

and WHY, please add reasoning! otherwise kinda dumb lol :P

[Cal]

Ej25. A 2jz seems like it would require an extensive amount of fab work and it's weigt would kill the balance of the car.

[modifiedMR]

agreed. Ease of swap and should keep near stock fitment.

Still, a set of low compression pistons and a turbo kit may fit the bill. That is, if the ecu can be hacked, otherwise, look for a new ecu.

[ej25ti]

Ej25. A 2jz seems like it would require an extensive amount of fab work and it's weigt would kill the balance of the car.

agreed
though a 2j would be pretty cool, guess they just have a special place in my heart since my IS

[modifiedMR]

Yes, the 2j has this thing called BADASSNESS! lol. It's a hell of a motor, but belongs in a car with a longer front and longer wheelbase. Even in an IS, a 3sgte would be better fit. 2j is for the Supra. It's just meant to be in a larger GT car. Too much powa! lol

Not to mention, a EJ can put out 400 whp easily, so why bother with a inline 6? Maybe in a drag car, but not for the street.

[ej25ti]

ideally id like about 350whp

[Cal]

Personally a 300whp street use BRZ would be good for me.

[modifiedMR]

The problem with both of those goals is that it may not be possible with it's stock compression ratio, which means that 300 whp will cost virtually no less than 400 whp.

[West]

264lbs (EJ25) vs 437lbs (2jz). At least in the ball park #s.

EJ25. Its at least similar to what makes this car unique.

[Cal]

^There is that too. Part of the allure for these care is the boxer engine. Kind of like what a rotary is to an RX7.

[ej25ti]

I kind feel its like
when I see a 240 with a nice sr20 I'm like oh that's pretty cool
but when I see a 240 with a nice 2jz I'm like that's AWESOME!

[Nellen]

Why not the all new turbo version of the FA20 (296 HP) they just fitted in the new JDM Legacy?

Turbo Version of Subaru BRZ’s FA-Series Engine Debuts in Japanese Legacy, Will Power Next WRX

[ej25ti]

^^^^ oooo that that that!
wonder the mpg's though
notice subaru used their own injection though!

[Nellen]

The mpg's will certainly be lower than the FA20 N/A, but will be above the EJ25 (but I think we all know that).

By the way I found a video of the Legacy 2.0GT DIT. I can't understand a word of what he says, but we can have a taste of the sound of the engine and what it can do.

Please post some other links if you find more about it

SUBARU LEGACY FIRST IMPRESSION LEGACY 2.0GT DIT/

[Cal]

I kind feel its like
when I see a 240 with a nice sr20 I'm like oh that's pretty cool
but when I see a 240 with a nice RB25/26 I'm like that's AWESOME!

Couldn't agree more.

[modifiedMR]

^There is that too. Part of the allure for these care is the boxer engine. Kind of like what a rotary is to an RX7.

I'd say the rotary is as good as a paperweight. An aluminum v8 is close to as light as the rotary with a turbo. The boxer is MUCH lighter than the rotary.

For the 240, an aluminum v6 or v8 is going to be better than the RB25 or 2jz for weight and make nearly as much power. 2jz>RB25

[Cal]

Desgin wise yes the 2JZ is better than the RB series.

However I am a purist/idiot and I don't a Toyota engine powering my Nissan.

[ej25ti]

Desgin wise yes the 2JZ is better than the RB series.

However I am a purist/idiot and I don't a Toyota engine powering my Nissan.

i was talking about the 86 though lol

[Cal]

I know. In the 86 still ej25.

[modifiedMR]

The "86" isn't a toyota. Period. It is a subaru that toyota is rebranding and helped develop, but all the build (materials/parts) really goes to subaru and should be treated as such, IMO.

It depends on what you want to do with it. If it was a dedicated drag car, then a 2j makes sense. Any drag car that can put in a 2j would probable benefit from the swap, except muscle cars. There is no replacement for displacement, but there is something close, turbo's and engines built to handle them. Slap a monster turbo on a vette and see how it turns out. lol

[ej25ti]

after finding out how hard it is to do a simple thing like change the spark plugs on the boxer in this car, yet alone my own, im gonna have to go with a 2jz, frill

[PatrickBRZ]

I kind feel its like
when I see a 240 with a nice sr20 I'm like oh that's pretty cool
but when I see a 240 with a nice 2jz I'm like that's AWESOME!

What about when you see one with the RB26DETT?

I love inline 6 configurations... naturally harmonically balanced so they are turbine-smooth, good torque, fun when the induction is forced... love my N54, something nice about being able to accelerate up steep grades in 6th gear without much effort.

[RallySport Direct]

Now, my heart lies with the 2JZ, but I agree with some comments above in that the boxer engine is what makes this car so unique. Also the whole point of going with something like the 2JZ is to support massive power numbers, which I just feel is over kill in these cars. so if I were to swap one, I would go Ej25 with high compression and a decent sized turbo, maybe with a goal around 400WHP. I think that would just be perfect

Thanks,
Rick

[modifiedMR]

THIS IS A EJ20 AKA a 2.0L engine in a Impreza L
Roger Clark @ Time Attack in Subaru Impreza 800bhp - YouTube

Do you need more weight in front when you can make 600+ whp with a boxer????

[Cal]

^That car is sick. Dude was diving into those corners! I'd love to see a BRZ with that kind of power.

[modifiedMR]

^That car is sick. Dude was diving into those corners! I'd love to see a BRZ with that kind of power.

I'd love to see one, but I dunno if I'd get behind the wheel unless I had good insurance. lol. A BRZ with 600 whp would be super fast and at 800 whp, crazy fast, especially if it was a gutted, race-spec type car like the wrx in the video. The brz would be quite a bit lighter and have less drivetrain loss (~1-2% less), so this 800 whp engine would be more like 810-820 whp with less weight to push! I want to see the BRZ/FRS hit 400 whp, but be able to drop to 2300 lbs or less. That would be much more manageable.