How To Build a Subaru Engine (FA20DIT)

What website to download the technical specs pls and thank you

Thanks for the links for the service manuals.

Outfront FTW I USE EM. UR IN THE OC ?

What kind of block is that ?

You make it look so easy lol.

You rock bro!

@smeedia so I blew found small sparkles in my fa20 tore it down found it to be thrust bearing. I wanna rebuild it and clean the heads re hone the cylinders and whatnot but I do not know what rods bearings and pistons to buy. I’m kinda balling on a budget but am thinking h beams and probably Manley pistons. Any recommendations would love to pick ur brain on it so I can get my wrx back on the road again. I’ve rebuilt a mzr disi 2.3 and a eco boost 2.5 and a lt4 and a small block 350 chevy motor any advice and insight would help a ton. Thanks man

Cheers for this, ive bent a stock rod after 6 years of being turbo on my GT86. gonna change out the rods for h beams and just keep running the 11psi and hopefully have no more bent rods in the future haha

I wanna know where did you buy the engine components i wanna build one when i get a 86/brz or did you already made a video about the parts n stuff

Subbed, where can I find the print outs?

Dumb questions: is this an OEM engine or aftermarket? What about this particular engine makes it more resilient to blowing up than the stock FA20?

I build engines daily and I still watched this with a joint in hand. Good stuff.

Dude! You're a fuckin badass!

Hey tanner, how much does it cost to get a built engine like those ?

Does your torque wrench have Nm as mine doesn't have ft/lb.

Hey! Loved the video, super educational. What’s the part # on the pistons and rods you used?

I’m confused. At least for CP doing my gap calculations it shows .018. Which is quiet a bit of a change between ours

Hey tanner. Where can I find the Fsm to print?

Good stuff as always. Where can I get a copy of that assembly printout?

im getting my bottom end swapped with a built one, can i swap over the timing components? old block onlly has 20k miles and is in superb condition, please help!

Hey I have a scenario I’d really like your advice about; my sons engined failed 2 years ago on his 2016 Subaru WRX 2.0 L DO HC inter cooled turbo engine with 44,000 miles on it. Subaru service found turbo charge shaft broken and impellers damaged. The short block cylinders 3 rod bearing also failed and found a lot of metal in the engine oil. Luckily, this was under power Tran warranty. Subaru replaced the short block turbo, oil feed lines, high pressure fuel line and oil pan at no cost. In October 2022 he was checking the oil and heard a tapping noise. I took it to the local Subaru service center who replaced the short block and turbo 2 years ago. They diagnosed it needed an engine rebuild to replace short block assembly, rod knock cylinder 4 at the cost of $ 8046.32. They said it was out of the one year warranty on parts from when they replaced it two years ago. The car only has 65,000 miles on it. I found the old invoice from two years ago which I never looked at because it said no charge on it and noticed that on the last page of the invoice it states after replacing the short block and turbo and engine reassemble they started the engine for a test drive. The engine check light came on Cam P00ll camshaft position timing over advanced bank1. They removed the cover and inspected the cam pulleys and found all 4 pulleys still had debris in them from when the engine failed and needed to be replaced. They replaced all four cam pulleys and reassembled the engine again.
My question to you is can the debris that they found after replacing the new short block and turbo get into the short block oil passageway or oil galleries and heads and Over time cause it to fail again two years later causing # 4 rod to knock?
What do you think?

I know this is a stupid question but what aftermarket internal parts did you add

Hey mate we still want to see more em stuff that is where my heart lays and will forever same with a lot of us and now the Ej engine has ended so it is great content that we all luv EJ or not really it’s jsut as we all are EJ is our father ahahah he taught us everything we know about Subaru ahaha

I like the fa20 new doesn’t mean bad and as long as we have gasoline engine I will still buy Subaru until they make an ev. Maybe I will buy the ev and drive the sub to car meets 😊

How much power can this reliably make?

My motor is in pieces 😭I wanna put it back together since it has been disassembled from the dealership and I haven’t been able to drive it for half a year and I wanna put it back together they said I over boosted and over revved and a valve was smacking the piston or whatever so I wanna see if I can do it myself

just wondering but would u ever dabble in the EZ engines?

Looks like nearly $2000 in pistons and rods alone. Would that be needed on a stock ring and bearing replacement to fix a rod knock?

I’m very happy now :)

Thank you for the FA20 video tanner! I love to see what the newer engines look like.

I’m thinking about trading in my truck for a 19+ wrx I’ve wanted one since i was a freshman 5 years ago but I’m on the fence

ourfront short block closed deck and long block assembly and tuning by prime motoring P3X FA engine build with fp blue turbo. E60 blend. Almost 24k miles on the build and compression tested recently and checked out good. when built right and maintained shit will last.

Tanner, this is a awesome video I’m happy you did this. Gotta show some more FA20 love soon hopefully show us how you time these and etc.

This is awesome, got a 2020 WRX a couple months ago, came from a 2005 blazer and man I love it, looking to learn as much as I can so love that you broke down the fa20 a bit 🤟🏼

Did you use plasti gauge to check rod bearing clearances?

Lol! Yessss Tanner, the Timmy's 😂..ah thanks for making me laugh and thanks for the content bro..cheers.

I feel like the fa20 was the black sheep of Subaru lol.

Thanks for the FA20 content! I saw Manley Pistons, What Rods did you use?

I'm happy you don't have to punch out the wrist pins through the access holes like on the EJ's XD

Hey Tanner, thanks so much for the video, I've been waiting for this one for a while, I knew you'd come through if I was patient. I see you linked the factory service manual. So I assume you set all the bearings and ring gaps to factory specs? Did you shoot for the looser side of the spec or just in the range?

They say the fa20 block itself is slightly thicker than a ej. It’s just the rods that are the weak point. Very very curious on how much power it would handle with just swapping the rods. Non the less love the video man. Thank you for the fa20 content. To anyone looking to see their fa, the market is dropping and they want to screw you! Keep that baby

Lmao bro this is the freakin humor that Immediately got my follow like 4-5 years ago!😆😆😆

Great video and thanks for the FA20 build!

Best video intro I’ve seen in a long time!!! Great job bud!

The FA20DIT Is so much better than the original EJ design. Other than weak rods its superior in ALL ways! Go to school tanner like the rest of us profesionals, not just being a hobby garage bull.

Where did you get the trim bezel for the side exit on the eg sti?

You said Small Tang......... ;)

Are you gonna do a video building FA20 heads, or is it the same or similar to EJs?

I think the fa24 is built similar to the ej with fa technology

Cryogenically treat every part and WPC it and use long rods instead of shorter ones that'll do it