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Old 06-27-2020, 12:59 AM   #76
bloodyBug_
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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



Really would love to see the results of this soon ***129327;. Love what you guys are doing with the FA platform! #pioneers
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Old 06-27-2020, 09:35 AM   #77
Straight6
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Whoa, crazy. There is so much potential for the FA24 STi to be great. Subaru, please do not screw it up.
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Old 06-28-2020, 02:37 PM   #78
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What's the ground clearance of those pipes? This was a problem on my 2nd build.. had to run a Primitive Racing skid plate with spacers on it and damned did that skid plate get beat on!! I ended up just swapping to a FP XR Blue and got another inch of clearance.. 1 inch does wonders!! Can't wait to see a FA24DIT that bolts up to the WRX!
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Old 06-29-2020, 11:41 AM   #79
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What's the ground clearance of those pipes? This was a problem on my 2nd build.. had to run a Primitive Racing skid plate with spacers on it and damned did that skid plate get beat on!! I ended up just swapping to a FP XR Blue and got another inch of clearance.. 1 inch does wonders!! Can't wait to see a FA24DIT that bolts up to the WRX!
yea i ended up not installing the longer dump pipe. Used the shorter dump pipe on the "further" EWG and left the "closer to the skid plate" EWG with no dump pipe.

It worked well on my build and some other local EWG builds in my area. I plan on keeping it like that with the rebuild that should be finishing up soon.
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Old 06-29-2020, 02:15 PM   #80
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yea i ended up not installing the longer dump pipe. Used the shorter dump pipe on the "further" EWG and left the "closer to the skid plate" EWG with no dump pipe.

It worked well on my build and some other local EWG builds in my area. I plan on keeping it like that with the rebuild that should be finishing up soon.
I just worried about mud and water.. I was RallyXing mine and submerging the underside of my car quite often.. I can't imagine having no pipe would be healthy in those instances? For street driving no prob. but mud and ice slush.. hmm I also didn't see much advantage of the 3584RS without secondary injectors and no cam upgrades, the FP is @ similar output and much less complex and cheaper (for those interested in upgrading turbo etc..) That is why I like the FA24dit idea, as it brings some extra fun to the table where the fa20 just can't get to at the moment..
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Old 06-29-2020, 03:05 PM   #81
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I just worried about mud and water.. I was RallyXing mine and submerging the underside of my car quite often.. I can't imagine having no pipe would be healthy in those instances? For street driving no prob. but mud and ice slush.. hmm I also didn't see much advantage of the 3584RS without secondary injectors and no cam upgrades, the FP is @ similar output and much less complex and cheaper (for those interested in upgrading turbo etc..) That is why I like the FA24dit idea, as it brings some extra fun to the table where the fa20 just can't get to at the moment..
Yea I have ZERO intention of driving through mud or ice -- South florida anyways so no snow/slush. Just a daily that can be fun at the track occasionally.

I agree on the fa20 vs fa24 perpsective you share -- it really depends on end user goals. Want mad power out of a 4-banger subie? the fa24 just might be the better platform to mod on. Want a 400-500whp subie for everyday use and occasional fun? A well built fa20 can suit that just fine.

I am definitely looking forward to what the fa24 has to offer in an sti platform.
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Old 07-01-2020, 01:22 PM   #82
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This came out today.

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Old 07-01-2020, 01:30 PM   #83
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This came out today.

YouTube
Not gonna lie this put a big smile on my face.
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Old 07-01-2020, 04:53 PM   #84
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So did they add port injection or aux fueling with new setup for 700whp goals? How much wtq are we taking about? And to confirm, oem long block w arp studs only?
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Old 07-01-2020, 05:27 PM   #85
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So did they add port injection or aux fueling with new setup for 700whp goals? How much wtq are we taking about? And to confirm, oem long block w arp studs only?
Yes OEM long block w APR studs. I'm not sure about the fueling but it was port injection from IBR BRZ intake mani.
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Old 07-03-2020, 06:08 PM   #86
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IDK why it's so hard for guys to comprehend they are still using the OEM long block with upgraded ARP head studs. Since they plan on pushing the limits.
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Old 07-07-2020, 03:13 PM   #87
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Can't blame them. People has been under impression of FA has weak internal. There are very few info about FA24 and how strong they are out in the wild. Those who follow prime motoring closely will not be surprised.
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Old 07-07-2020, 04:35 PM   #88
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Can't blame them. People has been under impression of FA has weak internal. There are very few info about FA24 and how strong they are out in the wild. Those who follow prime motoring closely will not be surprised.
FA24DIT has double thickness rods and cylinder walls are heftier!! lots of other goodies as well. Almost like they took all the bad **** from FA20dit and fixed it! I can't wait to get one that I can bolt up to my WRX.. swap will happen ASAP, and Motec M142 will come out of storage as well!! sit back and wait..
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Old 07-09-2020, 09:24 PM   #89
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Prime posted this today! Getting closer and closer!
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Old 10-28-2020, 11:58 PM   #90
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So uhhh while we're waiting on build updates, any info on difficulty/cost of this swap? How different would it be with the Impreza vs the crosstrek? I looove my GR hatch but the prospect of buying a new shortblock eventually is not appealing. I don't think I would sell the GR for a sedan, but an impreza or crosstrek with the swap could do it for me. I'm just assuming an FA24 swap into the GR chassis would be far more difficult with the different can-bus systems
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Old 10-29-2020, 11:25 AM   #91
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So uhhh while we're waiting on build updates, any info on difficulty/cost of this swap? How different would it be with the Impreza vs the crosstrek? I looove my GR hatch but the prospect of buying a new shortblock eventually is not appealing. I don't think I would sell the GR for a sedan, but an impreza or crosstrek with the swap could do it for me. I'm just assuming an FA24 swap into the GR chassis would be far more difficult with the different can-bus systems
you would have to get a wirring harness and/or motec ecu on that for sure.. also mounting the SUV engine to the wrx chassis doesn't work yet. I have a bad feeling that 2022+ will have mounting to match SUV and not the impreza so a straight swap from fa20dit will not be as easy.. might have some hefty fabrication to doing so.
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Old 10-29-2020, 12:57 PM   #92
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you would have to get a wirring harness and/or motec ecu on that for sure.. also mounting the SUV engine to the wrx chassis doesn't work yet. I have a bad feeling that 2022+ will have mounting to match SUV and not the impreza so a straight swap from fa20dit will not be as easy.. might have some hefty fabrication to doing so.
Supposedly, IBR is/was working on a swap kit to drop the FA24DIT into a VA chassis. I think they said it was mostly straight forward but there were a couple nuances that the kit would address to make it easier to do. Time will tell.

But unless you can get a deal on a used long block, its more cost efficient to build the bottom end of the FA20DIT. New long blocks from Subaru are around 9k I believe when I asked my local dealer.
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Old 10-29-2020, 01:01 PM   #93
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you would have to get a wiring harness and/or motec ecu on that for sure.. also mounting the SUV engine to the wrx chassis doesn't work yet. I have a bad feeling that 2022+ will have mounting to match SUV and not the impreza so a straight swap from fa20dit will not be as easy.. might have some hefty fabrication to doing so.
Yea GR swap I assumed would need a MoTec and some fab work, but Prime said they used a WRX ecu in the Crosstrek they swapped. They didn't mention a wiring harness at all. Made me hopeful that an FA24 into a fifth gen impreza or crosstrek wouldnt be terrible
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Old 11-22-2020, 03:27 PM   #94
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Alright I know this is off topic, but am I the only one that's questioning why subaru doesn't make a boxer 6 turbo for the new STI. I mean think about it if the fa24dit will make 400hp a 6 cylinder would be 600hp from the factory. With the new technology for direct injection the mpg would probably be the same as a 2019 STI or better still. It would be the same thing as the old eg33 from the SVX except twin turboed. I would pay more for one of those beasts. The power potential would be astronomical.
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Old 11-23-2020, 10:58 AM   #95
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I mean, there's a ton of reasons that they don't, and someone a bit smarter than me will chime in.

I think the biggest is that currently, STI's and WRXs are made in Japan. Japan has very strict engine regulations for taxes and what not. There is probably a large financial burden for them to start making something larger in Japan for the US market only, and I would expect a 6-cylinder car would no longer be able to be easily sold in Japan.
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Old 02-20-2021, 12:29 PM   #96
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Any update on this? I just sold my 11 STi and looking at possibly getting a 2021 but maybe worth the wait for the FA24 although I have a bunch of parts that won’t work
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Old 02-22-2021, 02:33 PM   #97
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I can't help, but think 500hp outback xt whenever I read this thread.
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Old 06-16-2021, 11:49 PM   #98
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Bump for updates
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Old 07-29-2021, 01:31 PM   #99
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I can't wait for the day we get more updates on this
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Old 07-29-2021, 02:27 PM   #100
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I can't wait for the day we get more updates on this

same! an FA24 DIT tuned by STi is going to be SICK
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