Welcome to the North American Subaru Impreza Owners Club Monday March 18, 2024
Home Forums Images WikiNASIOC Products Store Modifications Upgrade Garage
NASIOC
Go Back   NASIOC > NASIOC Technical > FA Series Factory 2.0L Turbo Powertrain

Welcome to NASIOC - The world's largest online community for Subaru enthusiasts!
Welcome to the NASIOC.com Subaru forum.

You are currently viewing our forum as a guest, which gives you limited access to view most discussions and access our other features. By joining our community, free of charge, you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is free, fast and simple, so please join our community today!

If you have any problems with the registration process or your account login, please contact us.







* As an Amazon Associate I earn from qualifying purchases. 
* Registered users of the site do not see these ads. 
Reply
 
Thread Tools Display Modes
Old 10-29-2019, 08:34 PM   #51
UncleFester
Scooby Newbie
 
Member#: 488783
Join Date: Jul 2018
Default

Quote:
Originally Posted by stlfd View Post
Has anyone determined if the FA24 is swappable into a VA chassis?
(Props to Prime Motoring on that sweet build!)

I'm surprised more people aren't asking about FA24 swap into VA. I've been thinking about an IAG built block for my 2018, but I'd go OEM FA24 all day long if it fit with minimal customization. Could the 2.0l heads fit the FA24? Maybe with some shop work?

A new FA24 shortblock can be had for less than 2k from Subaru..(now I'm just dreaming)
* Registered users of the site do not see these ads.
UncleFester is offline   Reply With Quote
Sponsored Links
* Registered users of the site do not see these ads.
Old 10-30-2019, 09:36 PM   #52
wuuusaa
Scooby Guru
 
Member#: 92894
Join Date: Aug 2005
Chapter/Region: BAIC
Location: nomo splitting lanes LOL
Vehicle:
2015 Wrx - fury kit
silver duh

Default

^^ These guys sell 2.4 blocks for $2493.

https://parts.bestbuysubaru.com/p/Su...1010AB49A.html
wuuusaa is offline   Reply With Quote
Old 10-30-2019, 10:11 PM   #53
WRXnick16
Scooby Specialist
 
Member#: 447898
Join Date: May 2016
Chapter/Region: BAIC
Location: Sacramento, CA
Vehicle:
2022 Tesla M3P
2019 STI CWP

Default

The short block assembly is around $1700 at my local dealership.

https://parts.subaru.com/p/Subaru_20...0103AC95A.html

If this FA20 cylinder heads bolt on, I'm guessing that they would at least need the combustion chambers opened up to compensate for the FA24's larger bore (86 vs 94 mm).

Then there's the question of the block dimensions to know if the intake manifold, intercooler, etc. will still fit in the same location. I'm guessing the intake manifold may not be interchangeable since Prime Motoring retained the FA24 intake manifold rather than using IBR's BRZ manifold kit.

I believe Ron also purchased a FA24 to swap into his WRX a while ago, but I haven't heard anymore about that.

Last edited by WRXnick16; 10-30-2019 at 10:17 PM.
WRXnick16 is offline   Reply With Quote
Old 10-30-2019, 10:52 PM   #54
adam99
Scooby Newbie
 
Member#: 480524
Join Date: Jan 2018
Location: Pa
Vehicle:
2015 WRX
Black

Default

Just waiting on some good Samaritan to do the swap and make all of the details public.
adam99 is offline   Reply With Quote
Old 11-07-2019, 10:33 PM   #55
dankor
Scooby Newbie
 
Member#: 460043
Join Date: Dec 2016
Default

Quote:
Originally Posted by WRXnick16 View Post

Then there's the question of the block dimensions to know if the intake manifold, intercooler, etc. will still fit in the same location. I'm guessing the intake manifold may not be interchangeable since Prime Motoring retained the FA24 intake manifold rather than using IBR's BRZ manifold kit.

Makes me wonder if the FA24 intake manifold off the Ascent will fit under the hood of a WRX.
dankor is offline   Reply With Quote
Old 11-13-2019, 12:07 PM   #56
3eyesraver
Scooby Newbie
 
Member#: 504042
Join Date: Jul 2019
Chapter/Region: SCIC
Location: SOCAL - Sothern Cali
Vehicle:
2018 WRX
ISM

Default

Imma just mod the 18 WRX, baby it, and hope can transfer all of those mods to 21STI muahahaha.
3eyesraver is offline   Reply With Quote
Old 01-20-2020, 03:14 PM   #57
gurusan
Scooby Newbie
 
Member#: 258165
Join Date: Sep 2010
Chapter/Region: NWIC
Location: Forest Grove, OR
Vehicle:
2015 WRX
DGM

Default

No one has swapped one of these in a WRX yet? Beefier rods sound nice along with OEM reliability.
gurusan is offline   Reply With Quote
Old 01-20-2020, 03:51 PM   #58
adam99
Scooby Newbie
 
Member#: 480524
Join Date: Jan 2018
Location: Pa
Vehicle:
2015 WRX
Black

Default

Quote:
Originally Posted by gurusan View Post
No one has swapped one of these in a WRX yet? Beefier rods sound nice along with OEM reliability.
Apparently there is alot of work that goes into it. IBR was supposed to come out with a list on how to do it. Also if you want beefy rods with oem reliability take a look at TurninConcepts stage 1 block.
adam99 is offline   Reply With Quote
Old 02-10-2020, 11:58 AM   #59
HyperBSTI
Scooby Newbie
 
Member#: 498589
Join Date: Mar 2019
Chapter/Region: MAIC
Location: Pittsburgh, PA
Vehicle:
2016 WRX STI
Hyper Blue

Default

This is pretty awesome and something I've been watching for for a while. Even more so now that my STI sounds like it developed a cracked ring land on cyl. 2.

I saw another thread somewhere claiming that the CANBUS system would make swapping the FA24 into WRXs or other cars very difficult. That doesn't seem to be the case here considering the engine works with the FA20 ECU.
HyperBSTI is offline   Reply With Quote
Old 03-03-2020, 12:13 PM   #60
PyroguyFTW
Scooby Newbie
 
Member#: 473226
Join Date: Aug 2017
Location: PA
Vehicle:
2022 WRX

Default

Quote:
Originally Posted by HyperBSTI View Post
I saw another thread somewhere claiming that the CANBUS system would make swapping the FA24 into WRXs or other cars very difficult. That doesn't seem to be the case here considering the engine works with the FA20 ECU.
What about just the shortblock or the longblock? If the heads share a bolt pattern it would be easy enough to just do some polishing/port work and add a thicker head gasket. I did some quick math and it looks like a 1mm gasket with about 1.5cc worth of porting from the cylinder heads would net around 11:1 which is perfectly manageable for 93 and/or e85 and 18~20psi. So I guess the next question becomes do you make the 2.0 heads fit the 2.4 short block? Or do you make the 2.4 long block fit the exhaust/intake/accessories?
PyroguyFTW is offline   Reply With Quote
Old 03-05-2020, 11:54 PM   #61
jakesubie
Scooby Newbie
 
Member#: 511228
Join Date: Jan 2020
Location: California
Vehicle:
2017 Subaru WRX
Red

Default

Wow, this is awesome. I've been curious to see what someone could do with the FA24. I hope they actually end up putting it into the next STI.
jakesubie is offline   Reply With Quote
Old 05-22-2020, 11:18 AM   #62
WRXnick16
Scooby Specialist
 
Member#: 447898
Join Date: May 2016
Chapter/Region: BAIC
Location: Sacramento, CA
Vehicle:
2022 Tesla M3P
2019 STI CWP

Default

Progress. BRZ manifold in thanks to IBR.

WRXnick16 is offline   Reply With Quote
Old 05-22-2020, 12:17 PM   #63
adam99
Scooby Newbie
 
Member#: 480524
Join Date: Jan 2018
Location: Pa
Vehicle:
2015 WRX
Black

Default

"Crosstrek back up and running thanks to @ibuildracecars allowing me to adapt the BRZ manifold to the FA24 and making a fuel rail solution that will allow us to offer the FA24 swap to our customers. Issue we had prior was the DI system creating too much pressure and bending the brackets made which would lift the injectors out of the seat. These new rails are brick **** houses, there is ZERO movement now and perfectly safe for operation." -Prime Motoring
adam99 is offline   Reply With Quote
Old 06-06-2020, 10:41 PM   #64
Ryanlwlr
Scooby Newbie
 
Member#: 479490
Join Date: Dec 2017
Default

Quote:
Originally Posted by adam99 View Post
"Crosstrek back up and running thanks to @ibuildracecars allowing me to adapt the BRZ manifold to the FA24 and making a fuel rail solution that will allow us to offer the FA24 swap to our customers. Issue we had prior was the DI system creating too much pressure and bending the brackets made which would lift the injectors out of the seat. These new rails are brick **** houses, there is ZERO movement now and perfectly safe for operation." -Prime Motoring
Will you guys be uploading a video on youtube with all the progress you have made and maybe some dyno pulls? Everyone I have talked to is excited to see what comes of this.
Ryanlwlr is offline   Reply With Quote
Old 06-07-2020, 02:55 PM   #65
DarkGreyMetallic
Scooby Newbie
 
Member#: 487896
Join Date: Jul 2018
Chapter/Region: South East
Location: Florida
Vehicle:
2018 WRX
Dark Grey Metallic 6MT

Default

Quote:
Originally Posted by Ryanlwlr View Post
Will you guys be uploading a video on youtube with all the progress you have made and maybe some dyno pulls? Everyone I have talked to is excited to see what comes of this.
It melted a piston on the 26th because it ran out of fuel and went very lean

There are pulls and graphs on their Instagram @primemotoring
DarkGreyMetallic is offline   Reply With Quote
Old 06-09-2020, 10:45 PM   #66
SubbieNoob
Scooby Newbie
 
Member#: 305546
Join Date: Jan 2012
Chapter/Region: NESIC
Location: Boston
Vehicle:
2016 WRX
World Rally Blue

Default

Any news on the swap process?
SubbieNoob is offline   Reply With Quote
Old 06-19-2020, 03:34 PM   #67
WRXnick16
Scooby Specialist
 
Member#: 447898
Join Date: May 2016
Chapter/Region: BAIC
Location: Sacramento, CA
Vehicle:
2022 Tesla M3P
2019 STI CWP

Default

Update:

"A glimpse into the future" demonstrating the potential of the next gen, FA powered STI.

537 whp & 490 lb-ft @ 22 psi on E56 before running out of fuel.





Modifications:
  • FA24DIT OEM Ascent long block
  • STI drivetrain
  • FP XR Blue 73HTZ twin scroll ball bearing turbo
  • Killer B IWG twin scroll header
  • Invidia J pipe w/ 3" catback
  • Cobb intake
  • Cobb FMIC
  • IBR BRZ intake manifold conversion w/ complete TGV deletes
  • Stock WRX ecu w/ Cobb AP & SD tuning software
  • Cobb EBCS
  • Cobb Flex Fuel kit
  • Hardwired fuel pump
  • Nostrum HPFP
  • Stock injectors
  • IAG AOS
-Non-power related: OEM STI 19" wheels, STI Type RA Brembos & Recaro seats

They continued pushing to 560+ whp but ran out fuel and leaned out to ~15:1 AFR (melting a piston). Should be capable of 600+ whp with auxiliary port injection (aka dual injection).

I will update the original post.
WRXnick16 is offline   Reply With Quote
Old 06-19-2020, 04:03 PM   #68
WRXnick16
Scooby Specialist
 
Member#: 447898
Join Date: May 2016
Chapter/Region: BAIC
Location: Sacramento, CA
Vehicle:
2022 Tesla M3P
2019 STI CWP

Default

And let the controversy begin!!


FA24DIT vs EJ257
Both setups are equipped with an FP XR Blue ball bearing turbo, full bolt-ons, FMIC, stock long block, STI drivetrain & tuned on ethanol at Prime Motoring. Same dyno, same tuner, same turbo, ~10 days apart.

Modern FA24DIT
Power: 537 whp
Torque: 490 wtq (lb-ft)
Fuel: E56
Boost: 22 psi
Displacement: 2387cc (2.4L)
Bore & Stroke: 94mm x 86mm
Bore/Stroke ratio: 1.09 (oversquare)
Rod/Stroke ratio: 1.5
Compression: 10.6:1
Effective compression: 26.5:1
Injection: Direct
Turbo: Low mount, twin scroll, ball bearing, 22 psi
Specific output: 225 WHP/L (~265 HP/L)
BMEP: ~41 bar (~242 lb-ft/L)

Old School EJ257 ('19 STI Series.Gray)
Power: 463 whp
Torque: 448 wtq (lb-ft)
Fuel: E85
Boost: 26 psi
Displacement: 2457cc (2.5L)
Bore & Stroke: 99.5mm x 79mm
Bore/Stroke ratio: 1.26 (oversquare)
Rod/Stroke ratio: 1.65
Compression: 8.2:1
Effective compression: 22.7:1
Injection: Port
Turbo: Single scroll, ball bearing, 26 psi
Specific output: 188 WHP/L (~222 HP/L)
BMEP: ~36 bar (~215 lb-ft/L)

Peak numbers aside, look at the monster torque curve that the FA24DIT produces compared to the EJ257. The FA24 dominates in area under the curve!

The future of the STI looks promising if it's powered by an STI-tuned version of the FA24DIT!

Turbo specs for both setups:
FP XR Blue 73HTZ ball bearing turbocharger.
Flow rating: 57 lb/min.
Compressor wheel: 52.6mm inducer/73mm exducer.
Turbine wheel: 60.8mm inducer/54mm exducer.
CHRA: Xona Rotor ball bearing.
Disclaimer: The EJ257 uses single scroll housing as FP does not make a twin scroll housing for the EJ. Twin scroll setups (header, uppipe, downpipe, turbo, etc) are rare to come by for the EJ257 since they're costly and typically JDM as we didn't receive a twin scroll EJ in the US. Whereas, the FA24DIT uses twin scroll housing as it comes with a twin scroll setup from the factory. Every other aspect of the turbo is the same.

This is probably as close to a fair comparison as we'll ever see between the EJ257 & FA24DIT in terms of setup, dyno, tuner, etc.

And yes, I own a '19 STI equipped with the EJ257, but I can't resist:
WRXnick16 is offline   Reply With Quote
Old 06-19-2020, 05:12 PM   #69
Straight6
Scooby Specialist
 
Member#: 419593
Join Date: Apr 2015
Default

That FA24 is a beast
Straight6 is offline   Reply With Quote
Old 06-20-2020, 07:35 PM   #70
wuuusaa
Scooby Guru
 
Member#: 92894
Join Date: Aug 2005
Chapter/Region: BAIC
Location: nomo splitting lanes LOL
Vehicle:
2015 Wrx - fury kit
silver duh

Default

Good stuff right there Nick, thank you! Hopefully I can find a decently priced FA24 to make that swap. I want the all the torque.
wuuusaa is offline   Reply With Quote
Old 06-20-2020, 09:14 PM   #71
Comikazi
Scooby Newbie
 
Member#: 402552
Join Date: Sep 2014
Location: Canada
Vehicle:
2016 WRX

Default

Which Engineering Explained video is that in those pictures?

I don't remember watching this one.
Comikazi is offline   Reply With Quote
Old 06-21-2020, 04:20 PM   #72
bloodyBug_
Scooby Newbie
 
Member#: 389775
Join Date: May 2014
Location: CO
Vehicle:
2017 WRX premium
Crystal white

Default

Quote:
Originally Posted by Comikazi View Post
Which Engineering Explained video is that in those pictures?



I don't remember watching this one.


I tried looking for it as well and had no luck
bloodyBug_ is offline   Reply With Quote
Old 06-21-2020, 08:27 PM   #73
Rexy18
*** Banned ***
 
Member#: 500337
Join Date: Apr 2019
Default

I believe it to be other guys' show called everyday driver or something similar, buncha Kanadians.
Rexy18 is offline   Reply With Quote
Old 06-22-2020, 08:24 AM   #74
bicycle_wreck
Scooby Specialist
 
Member#: 226331
Join Date: Oct 2009
Chapter/Region: South East
Location: Knoxville, TN
Vehicle:
2012 WRX Hatch
Poor Man's Panamera

Default

Quote:
Originally Posted by Rexy18 View Post
I believe it to be other guys’ show called everyday driver or something similar, buncha Kanadians.
Throttle House.

bicycle_wreck is offline   Reply With Quote
Old 06-25-2020, 05:56 PM   #75
WRXnick16
Scooby Specialist
 
Member#: 447898
Join Date: May 2016
Chapter/Region: BAIC
Location: Sacramento, CA
Vehicle:
2022 Tesla M3P
2019 STI CWP

Default

Prime Motoring has the FA24DIT back up & running with a GTX3852R Killer B Fury turbo kit. Stock long block with ARP head studs.. seeing how well it holds with 700 whp

WRXnick16 is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump

All times are GMT -4. The time now is 10:37 PM.


Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.
Powered by Searchlight © 2024 Axivo Inc.
Copyright ©1999 - 2019, North American Subaru Impreza Owners Club, Inc.

As an Amazon Associate I earn from qualifying purchases.

When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission
Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.