I prefer high revs.

I would imagine a 20G and an Ej207 being pretty fun to drive with the high rev.

 

I have an EJ207. I much prefer the high revving of this engine over the grunt of the EJ257. I've driven RSTi's with both setups and still prefer mine. It feels a lot smoother to me, and boy is bouncing off the rev limiter at 8000 RPM's orgasmic. Although an EJ257 will make more torque, do not underestimate your Type R engine by any means.

 

I don't think the difference between these two engines is such a big deal if they both have equal hp. One will peak in a different rpm band but both get you where you want to be. Hp is hp, you either have higher rpm and lower torque or less rpm and more torque.

This is assuming two different engines both with the same overall hp, I'm not comparing any other benefits to lower or higher displacement.

 

Who would exit a corner faster?

 

I enjoy having a high rev. I used to think differently until i swapped my car. I like the 257's when they came into work and i'd take them out but now i really enjoy high end. It also allows me a little bit more freedom i think. If i want to keep it higher in RPM's because i am on the track or whatever, i feel like i can do so in a lower gear and exit a bit quicker because i am already in boost and have some room up to 8k where the 257 would have the same thing but i'd need to shift a couple seconds sooner and might not be completely out of the turn yet. But in the end, its all personal preference...i am sure someone else will come in and tell me why that's wrong in the next post!

 

hahah, reminds me of intial d when takumi raced the ek.

 

It would be interesting to see dyno-graphs for the engines to see how they compare.

 

I have a WRX swapped RS and the ej205 is so much more fun to drive. Like mentioned above, something about bouncing off at 7k - 7.5k rpms gives you like a brain orgasm... especially when you're actually making power up that high (see: vf39 +).

 

I don't know, seems like preference at a certain point. I'm more of a 257 guy.

 

So it's about top end vs. low end?

 

Kinda yes.

Really, the EJ25's low end will be 'fastaaaaar' like on a track... but the EJ20's high end and smoothness is good too. We can debate all we want, but it comes down to preference. I think the EJ20 would be 'more fun' though. Any high revving engine is, for the most part.

 

6, 1/2 dozen. Most people like to rev high. Some guys like the torquey low-end. Find two friends, one with the ej257 and one with a 205/207... go for a ride and see which one you like more.

The only reason I'd take the ej257 over the 2.0 liter is for spool characteristics. The extra displacement will spool a larger turbo faster than the 2.0... I think ultimately they have more potential for raw power. You don't see a lot of people putting gt30/35/40s on 2.0 liters. It's almost always a 2.5 liter, or bored/sleeved to be even bigger.

 

6, 1/2 dozen. Most people like to rev high. Some guys like the torquey low-end. Find two friends, one with the ej257 and one with a 205/207... go for a ride and see which one you like more.

First I need to find a friend with a Subaru, then work my way up.:blol:

 

I rode in 2 equal length header EJ257 setups and 2 STi setups.

I really don't know. I'd love to ride in an EJ207, but no one around here has one.

I guess I liked the the equal length setup because it pulled extremely hard at later RPMs..

 

Torque is stupid. High RPM fun is where it is at!

 

Speaking from a been there done that stand point:

I built a 1964 GTO with my father in high school. Was a show monster took over 85 best of show trophies from the west coast to colorado. Also was made for the 1/4 ( car was easter egg purple). Put 823 to the wheels. Fucking RAW! With poncho power so revving didnt happen but torque did.

Then for giggles I decided to build an SR20DET 240 in 2000. He and I agreed the baby motor with a snail was a hoot to drive because it sang, and put power and torque down when it was 'safer'.

Laying steam roller patches to 115mph is something else, but launching a car hard and pulling a gear for 7-9000rpm is exhalirating.

then theres the LSX........ shoe horn one of those sluts in a roo......


It's an endless internet debate!! If torque is an issue ALS drops panties and frys turbos!

 

LSX series isn't fair

 

This is why I don't want a honda. I don't wanna have to rev to 5k to make power, I liked having power NOW during my daily drive.

 

This topic might be compared to us N/A guys that have done the whole cold air/short ram intake thing. You know, were we remove the torque box and there seems to be an engine hesitation until higher rpms. I drove around with the Injen CAI for a while but never got used to having to wait so long for the engine to come alive (higher rpms). I then created my own intake and added the torque box and Im loving every minute of it. A good friend of mine has a CRX thats revs pretty high (I dont know what engine, maybe 18b), but its not that fun to drive in traffic at all. It just sounds really crazy when it revs all the way up to 8k.

 

I dunno, Ive run a SRI and Ganzflow and didnt notice any lower end loss at all with the SRI, actually it felt more responsive lol

 

I don't see much mention of gearing in this thread, which play alot to the traits of the motors. Gear a torquey motor too low and it'll be slower than a top end motor with the correct gearing for it. Same goes for the other way around.

 

I don't know what happens when you combine a high revving STi engine with a close gear ratio (4.44) transmission. :noes:

 

I rode in a fully swapped version 8 bugeye. Effortless acceleration from 2.5k-8k rpm. High rpm engines and short gears.:naughty:

 

^^This

Short gearing is awesome on the high revving 207

I love the 8k redline, the speedo is still going up quickly enough and I don't drag race so I could care less.

 

Ya, i still have my RS tranny in so my gears are a little short with the ej20k and i love it!

 

I have the best of both, almost.

Stock TD04 on a modified 2.0. Turbo spools quickly, giving me good low end, and it spins to 7 grand, giving it good top end. Except, with the intake and such, my injectors cannot keep up, so I run out of fuel around 6,750 RPM, so I just short shift around 6,250 RPM to avoid going lean. Doesn't make any power up there anyway.

To get around that, would be simple. Larger injectors, buy a couple of spare TD04's, a pair of auxiliary oil coolers (one would probably be all that's necessary), and turn the boost up at high RPM. A bigger intercooler would probably be good too.

My turbo actually starts doing stuff before the car leaves the line, and I've got the 5 speed. So it certainly has torque. Plus, I'm running 16.25 PSI of boost, tapering to wastegate by 5,500 RPM.

I was actually thinking about this the other day after doing some light offroading. The WRX has longer gears, and it has enough low end torque to do more at low RPM than a 2.5RS or Legacy GT. That doesn't sound like a lot, but when you exit a corner blasting up to 65 MPH in second, you exit a lot faster than in an RS or LGT with a 4.11 final drive, where second is much shorter, and you have to shift to hit 60 MPH. And you can't do it in third gear, because it doesn't have enough power and just bogs down and you don't go anywhere anyway.

I've driven in a 4.444 equipped swapped RHD STi (1993 chassis), and it was a little different. I think third gear topped out at 70 in that thing. It accelerated quickly, but... My WRX would beat it in a drag race to 165 MPH, simply because my WRX could actually go that fast (no speed limiter anymore), and the STi was gearing limited to 135 or something.

So I'd take the rev happy turbo motor over a not as torquey NA motor.

And then there's the 3.6R... You can de-stroke that with a 3.0R crank, stick forged bits in it, turbo cams, slap an enormous turbo on it, and that thing will rev to 9k RPM, make a TON of low end torque, AND make a lot of high end HP. 45 in first gear sound pretty fun to me.

 

I had an EJ20G swapped into my last Impreza. It took me a few weeks to get used to the new boss. A pretty well known Subaru mechanic in SoCal advised me to stop driving like an American (low RPM, torque) and start driving like a Japanese (high RPM, boost whistle). 10 years of driving in the US told me that revving past 5K was "bad for the engine." Little did I know that the EJ20G + TD05-16G didn't really wake up until 5K up to the redline.

Learning that it was OK to use the upper end and not be afraid that something would break instantly was cool. That motor made me smile many, many times.

My WRX would beat it in a drag race to 165 MPH,

You crazy, boy.

 

Well looks like no top speed for me!

The Version 4 STi goes from 0-60 in 4.6 seconds but as Sarra said, the 4.44 doesn't allow for top speed!

Unfortunately, my car won't be a rally car with the 4.44

 

Acceleration over Top Speed anyday for me.......

 

I think it's hard to partake in this debate unless you've had both experiences. Mine comes from two RX7s before my three Imprezas.

I loved going 120 in 3rd gear in RX7, but I hated not having power till turbo kicked in.
In my subaru (supercharged) I adore gettting pushed back into the seat from a dig, but the car is worthless near redline.

I really like both, and I want both! I think Sti with stage 2 map or Audi S4 (rs4) have what I need

 

Another thing to consider. The 4.444 Final drive gearboxes... They actually aren't the shortest gearboxes Subaru made. The 1990's had some 4.11 final drive boxes that had shorter gearing than the 4.444 boxes, so all of the gears were actually shorter. Fifth gear was super short, I think it would top out around 120 mph at 7,000 RPM with 205 55R16 tires, compared to the 4.444 that topped out at 135 at 7,000 RPM in fifth with the same tires.

One thing I've learned is, the more power it makes, the longer you want your gears. If you have a long, broad torque curve and your HP isn't Mt Everest, long gears help. If you've got the Escudo Rally car, you want short gears (basically 30 HP, then it spikes to 1,000+ HP for like 12 RPM, then it hits redline). So, tailor your gearing to your engine. It's part of why if I ever do a 6 speed swap, it's getting a 1:1 center diff and 3.545 front diff, and a 2007 rear diff (also 3.545). Looooonger gears.

 

^ Woohoo!

So I think my RA tranny will be ok for a long time because I don't plan on large amounts of power.