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Old 11-18-2020, 09:43 PM   #251
Lminette
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Quote:
Originally Posted by JP Chestnut View Post
Much better. It looks like there's something intrinsic to this motor that causes the torque dip. I thought it was just standard ****ty Subaru tuning. In any case, the torque curve is very flat from 4K-7K RPM.


I think itís the D4S fuel injection system.
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Old 11-18-2020, 10:02 PM   #252
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Originally Posted by Lminette View Post
I think itís the D4S fuel injection system.
We went over this on the last page.. Its NOT the D4S system.

If it was, other N/A Boxer engines wouldn't have the torque dip... But they do.
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Old 11-18-2020, 10:15 PM   #253
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Yeah hadnít caught up yet when I replied. Iíve never noticed it in my 2.5RS but Iím pretty much always beating the piss out of it so...
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Old 11-18-2020, 10:33 PM   #254
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Originally Posted by Lminette View Post
Yeah hadnít caught up yet when I replied. Iíve never noticed it in my 2.5RS but Iím pretty much always beating the piss out of it so...
This is how I drove my BRZ and the torque dip never really bothered me all that much. If it did catch me offguard I just figured it was my bad and not the car's. It never diminished my joy of driving it, although it's always fun to throw more power at it with bolt-ons.
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Old 11-18-2020, 11:38 PM   #255
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Quote:
Originally Posted by JP Chestnut View Post
The old BRZ in case anyone is wondering:

Power: 205 hp @ 7000 rpm
Torque: 156 lb-ft @ 6400 rpm

I think the new one is going to feel like a torque monster compared to the old one. Almost 30 lb-ft more coming almost 3000rpm sooner is going to make for an entirely different driving experience.
Hopefully it doesn't lose its higher-end characteristics like when the Civic Si went from the K20 to the K24. But at least the new BRZ motor gets a decent hp bump too.
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Old 11-18-2020, 11:46 PM   #256
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Is it me, or does it sound like it has fake engine noises during all the ride alongs?

I mean, it had the intake pipe going to the passenger foot well before, but this sounds more like digital phony.
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Old 11-19-2020, 12:42 AM   #257
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Originally Posted by DeeezNuuuts83 View Post
Hopefully it doesn't lose its higher-end characteristics like when the Civic Si went from the K20 to the K24. But at least the new BRZ motor gets a decent hp bump too.
It shouldn't based on the bore/stroke and its 7,500 RPM redline.

The BRZ gained it's displacement from increasing the bore:

Bore: 86mm -> 94mm
Stroke stays the same at 86mm.

The K24 gained its displacement from increased stroke compared to the K20:

Bore: 86mm -> 87mm
Stroke: 86mm -> 99mm

There were quite a few reasons that K24Z7 in the 9th gen Civic Si lost its high revving VTEC character:
  • Lost VTEC on the exhaust side (intake only)
  • Poorer flowing cylinder head
  • Integrated exhaust manifold with catalytic converter closer to the cylinder head for improved emissions
  • Redline dropped from ~8200 RPM to 7200 RPM due to the increased piston speed from the added stroke
  • Oil pump balance shafts
Swapping the higher flowing K20 cylinder head (with "true" VTEC), RBC/RRC intake manifold, K20A2 oil pump, tubular header and increasing the redline is a popular mod for the K24Z7 Si. It's not uncommon to see these rev to 8000+ RPM.

Last edited by WRXnick16; 11-19-2020 at 01:25 PM.
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Old 11-19-2020, 12:43 AM   #258
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Originally Posted by Kostamojen View Post
Is it me, or does it sound like it has fake engine noises during all the ride alongs?

I mean, it had the intake pipe going to the passenger foot well before, but this sounds more like digital phony.
Agreed, I was thinking the same thing.
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Old 11-19-2020, 01:20 AM   #259
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Originally Posted by Kostamojen View Post
Is it me, or does it sound like it has fake engine noises during all the ride alongs?

I mean, it had the intake pipe going to the passenger foot well before, but this sounds more like digital phony.
It's definitely more "growly" to me.
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Old 11-19-2020, 01:22 AM   #260
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Originally Posted by chanomatik View Post
This is how I drove my BRZ and the torque dip never really bothered me all that much. If it did catch me offguard I just figured it was my bad and not the car's. It never diminished my joy of driving it, although it's always fun to throw more power at it with bolt-ons.


Agree 100%! Live between 4 and 7k and itís no problem at all.
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Old 11-19-2020, 10:19 AM   #261
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Quote:
Originally Posted by Kostamojen View Post
Is it me, or does it sound like it has fake engine noises during all the ride alongs?

I mean, it had the intake pipe going to the passenger foot well before, but this sounds more like digital phony.
in the pictures of the engine bay I don't see the same sound generating tube coming off the intake, so if there is something amplifying engine noise into the cabin it would likely be digital.

but then, the videos we've seen of driving are released by the Subaru marketing department. is the audio we hear just a cabin mic? do they digitally enhance the engine audio picked up by the cabin mic? do they have another mic closer to the exhaust to pick up an enhanced sound? is it some random engine noise digitally sampled into the video?

as far as the 2.0 and torque dip, with the updated FD in the 2017 and newer it 'feels' like there's usable torque lower in the RPM range. as a result, for city driving I tend to shift below 4k and everyone is happy. when I want to go, I don't shift till 7k. you can easily dance around the dip, as it were.

that's not to say that I'm not already anticipating that the 2.4 will become a cheap upgrade for the older car with minimal modifications to make it fit.
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Old 11-19-2020, 10:59 AM   #262
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It's definitely more "growly" to me.
It definitely sounds better from the outside as well, at time 3:23 -


S
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Old 11-19-2020, 12:28 PM   #263
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this thing looks great.

not sure I could swing it with a family of four, but I'll give it some thought.
me too, I kind of wanted the last gen, but really want it now.

3rd car is tough for us with no space in the driveway, and not sure if my kids can fit in the back, but would love to buy this for my wife to drive instead of having to drive the Ascent to work.
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Old 11-19-2020, 12:29 PM   #264
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It definitely sounds better from the outside as well, at time 3:23 -

https://youtu.be/mjkmcTQVzD0

S
Wow, it looks great in that video. Life's too short not to have a RWD sports coupe in the corral.
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Old 11-19-2020, 01:09 PM   #265
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Originally Posted by DeeezNuuuts83 View Post
Hopefully it doesn't lose its higher-end characteristics like when the Civic Si went from the K20 to the K24. But at least the new BRZ motor gets a decent hp bump too.
Hopefully not. IIRC the K24 had a lower redline than the K20 in addition to the increased torque
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Old 11-19-2020, 01:23 PM   #266
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me too, I kind of wanted the last gen, but really want it now.

3rd car is tough for us with no space in the driveway, and not sure if my kids can fit in the back, but would love to buy this for my wife to drive instead of having to drive the Ascent to work.
I seriously shopped the previous gen and there were a bunch of ďcar seat in the backĒ reviews. The takeaway was that rear facing seats didnít really fit but a front facing seat or two was doable with the front seats slid forward. The only issue was getting in the seat - once there it was fine.
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Old 11-19-2020, 02:16 PM   #267
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Originally Posted by samagon View Post
in the pictures of the engine bay I don't see the same sound generating tube coming off the intake, so if there is something amplifying engine noise into the cabin it would likely be digital.

but then, the videos we've seen of driving are released by the Subaru marketing department. is the audio we hear just a cabin mic? do they digitally enhance the engine audio picked up by the cabin mic? do they have another mic closer to the exhaust to pick up an enhanced sound? is it some random engine noise digitally sampled into the video?
I was talking about all the independent Youtuber ride along videos, not the Subaru press release videos.
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Old 11-19-2020, 02:26 PM   #268
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I seriously shopped the previous gen and there were a bunch of ďcar seat in the backĒ reviews. The takeaway was that rear facing seats didnít really fit but a front facing seat or two was doable with the front seats slid forward. The only issue was getting in the seat - once there it was fine.
If you're a on the shorter side (I'm 5'8) and/or willing to move the seat up a bit.. it's enough space that I can fit kids in the back for short commutes. My coworkers wife told me she actually preferred the cabins small size because she could easily reach in back and "handle the children" quite easily ^_^
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Old 11-19-2020, 02:35 PM   #269
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If you're a on the shorter side (I'm 5'8) and/or willing to move the seat up a bit.. it's enough space that I can fit kids in the back for short commutes. My coworkers wife told me she actually preferred the cabins small size because she could easily reach in back and "handle the children" quite easily ^_^
I swear rear facing car seats have gotten bigger in the past six years... We go in Tuesday for a scheduled delivery, and today I sat in the passenger seat of my wife's car (2017 Corolla iM hatch) which has the rear-facing seat behind it; needless to say with me being 5'-10", if we got in an accident I wouldn't be able to operate a clutch again as my left knee was against the dash. She can sit in front of the rear facing seat however, as she is only 5'-4".
My car is fine, as the seating position is completely different and it is a slightly larger car (although still classed "compact"), but I'm fairly confident in saying I could not sit in a BRZ with a rear-facing seat behind me, and I'm not confident my wife could either.
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Old 11-19-2020, 02:41 PM   #270
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Rear facing seats are huge. There's no doubt about that.
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Old 11-19-2020, 03:52 PM   #271
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BRZ isn't for families or for kids to ride in the back, everyone knows this by now.

But it DOES allow for one or two people and a **** LOAD of cargo with that rear seat folded flat!
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Old 11-19-2020, 03:56 PM   #272
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I've been on numerous test drives in the back seat of a BRZ and I'm no small guy. Not the best; but, not the worst either.
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Old 11-19-2020, 04:17 PM   #273
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BRZ isn't for families or for kids to ride in the back, everyone knows this by now.

But it DOES allow for one or two people and a **** LOAD of cargo with that rear seat folded flat!
The possibility of sitting someone in the backseat is the major reason why one would pick a 2+2 BRZ over an even more sport focused two seater.

Nobody is going to daily drive their kid around in a BRZ, but being and to do it in a pinch is a huge plus. Otherwise I'd just buy a Supra, Corvette, Miata, or some other two seat option.
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Old 11-19-2020, 04:22 PM   #274
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BRZ should just be a single seat car in base trim. Shave about 150 lbs in the process. Sell a seat package to those who need them. Commuter, college kid, track car...one seat.
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Old 11-19-2020, 04:41 PM   #275
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BRZ isn't for families or for kids to ride in the back, everyone knows this by now.

But it DOES allow for one or two people and a **** LOAD of cargo with that rear seat folded flat!
Track tires, wheels and a jack.

They said also a bike w/ one wheel off.
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