The FA24F was designed for 271hp.

I'd take all the "zomg it handles so much horsepower" shitposting with a grain of salt.

You may not have been around when the FA20F was seeing the same hype.

Fundamentally, the FA24F is still a wet sump and non-main-priority engine just like the FA20F. It isn't anymore a race engine than all of its predecessors.

 

Hey thanks man, I didn't think it was a better "race" engine, it's more the fact that even know basic stage 1 and 2 tunes, FA24 is putting down more power, but lower in the RPM range, which would probably be a better set up for track use. But if this swap is going to require a considerate amount of custom fabrication... its not at all worth it. But a built FA20 for 4500, or stock FA24 for 4k. I haven't heard of the FA24s having block issues like the 20s... so kinda seeing what people experiences are with those motors.

I've already gone thru 2 motors, so I figured I'd entertain the idea of FA24 swap... especially since after market is kinda moving away from FA20

 

FA20 has been around since 2012 on brz. FA24 is 3 years old. The fabrication is the easy part. Making ECUs and BCMs from 2 different platforms talk to each other will give you ulcers. A standalone ECU and custom wiring will cost as much as a replacement block.

Unless you are doing endurance racing, you need a better tuner if you have gone through that many. There are closed deck versions of the FA20 with forged rotating assemblies from HKS, Outfront & IAG. No piston squirters anywhere but HKS does drill channels from the oil galley that spray some oil on the pistons.

 

you need a better tuner if you have gone through that many.

That's kind of what I'm thinking.

 

OK, I'm still not understanding the motivation here. Are you wanting the additional displacement from the FA24F?

 

Yea i was looking into the 2.4 because eventually the car will be more a teack focus car... so i figured torque curve would be better with the 2.4, but I already put in the order for FA20 short block

 

What did you go with this time?

 

OutFront Motorsports in Cali 🤞🏽🤞🏽🤞🏽 heard good things about their blocks. So we will see what happens. Can't wait to see what this setup will push

 

I could have done this in PA for ya lmao 🤣 probably for a fuck ton cheaper with smarter people also.

 

Outfront is awesome, I am close by

 

VSC now uses Billet Block and Heads

 

Really? Since when? 🤔

 

I believe since they moved on from the VA chassis. You could ask them…

 

Hahaha oh me ask them? Yeah that's like me calling my ex fiancee and saying HEYA what's up pal 😆

I left right around that time but we had.. the facilities for it we just didn't do it for the regulation cars... Custom builds sure but not rally? I don't know why money probably I don't run companies lol for a reason but that did throw me for a loop cause I would have lost a pretty good bet lmao 👍 you missed out on 50$! 😅

 

Hey everyone,
I drive... drove a 2018 FA20 WRX, had stage 2 IAG block, and after about 50k miles on this block, pistons turned out to be damaged, with minor scratches to the sleeves. I can find built blocks from $4500 to $5100, but I can find a FA24 for less lol has anyone tried this swap? I JUST bought a hybrid turbo for the FA20, and REALLY wanted to use it, but it's not the same bolt pattern as the FA24 turbo, so I'd probably have to fabricate J pipe and Header... idk just throwing this out there since I'm saving up for a block.

Pros staying FA20

• Have every bolt on already on the car, would just have to rebuild motor and bolt it back in
• Much cheaper I believe even with block price being high

Cons of staying FA20
- Regrets of not having FA24 lol

Pros to going FA24
- power potential is insane especially for track use

Cons going FA24

• no information on what this would entail
• how much fab might be required
• potential total cost of making this engine work
• Losing the BRZ Intake manifold 😢

Mods currently done to FA20

• Grimmspeed CAI
• Grimmspeed catted J pipe
• Invidious R400
• Perrin turbo inlet
• Grimmspeed 3 port boost controller
• Perrin Oil Air Seperator
• BRZ Intake Manifold + IBR kit
• ETS Front Mount Intercooler
• Boostlab BL58XR turbo

I know this is a lot, but I don't see much on this so just curious to what people might have heard or seen about heat sleeve, and if anyone with knowledge on the 2 engines, it would mean a lot if you can help me learn a little about this. Much appreciated 🙏🏽

Sticking with the FA20 makes the most sense in your case, especially since you already have every supporting mod including a hybrid turbo made for it. Rebuilding the motor and dropping it back in is way more straightforward and cheaper overall even if the block price is high. The FA24 is tempting for sure with more displacement, better power potential, and stronger internals, but the swap would be a headache. Custom fab for the J pipe, header, mounts, wiring, and tuning adds up fast. Plus you’d lose your BRZ manifold setup. Unless you're ready for a big project, FA20 is the smarter path.

 

Yea I decided to stick to FA20. Still waiting on a tech to assemble and install the new engine with the Machined heads. Hopefully ill have some power numbers by next month 🤞🏽🤞🏽🤞🏽