Forced Induction - is there a long term reliability problem for the 86/BRZ

[Silverdub]

If i can get about 30,000 miles on the engine before a rebuild is needed, i'll be happy

[mact]

The FA20 sort of reminds me of the Toyota 2JZ engine. The 2JZ was offered in both turbo and non-turbo applications. The turbo variant of course is built like a tank, but there are many "na-t" engines out there that produce respectable numbers; way more power than what it came with from the factory.

A turbo version of the FA20 is currently found in the JDM Legacy (2.0GT DIT) that produces 296hp or so. Seeing what the various shops have already done to this engine gives me a good feeling this motor is going to do just fine. But as previously mentioned, only time will tell.

[chulooz]

Originally Posted by mact

The FA20 sort of reminds me of the Toyota 2JZ engine. The 2JZ was offered in both turbo and non-turbo applications. The turbo variant of course is built like a tank, but there are many "na-t" engines out there that produce respectable numbers; way more power than what it came with from the factory.

A turbo FB20 is currently found in the JDM Legacy (2.0GT DIT) that produces 296hp or so. Seeing what the various shops have already done to this engine gives me a good feeling this motor is going to do just fine. But as previously mentioned, only time will tell.

fixed

[subatoy]

100 dyno pulls with a brand new engine is not the same as 100 pulls on a car with a turbo with a 5 year old engine.
I'm sure 400whp is too much for this car but if it's doing so well with it I would say 250whp would last forever.

[mact]

Originally Posted by chulooz

fixed

Subaru FA engine
(Japanese: Subaru FA engine) The FA was developed from the FB engine, however, efforts to reduce weight while maintaining durability were the main goals of the FA engine. While the FA and FB engine share a common platform, the FA shares very little in dedicated parts with the FB engine, with a different block, head, connecting rods, and pistons. The FA also features direct injection (from Toyota) and Subaru AVCS variable valve timing system. It is used in the Subaru BRZ, and is identified by a Toyota engine family code known as the 4U-GSE, which is installed in the Toyota 86 and the Scion FR-S.[6] According to Subaru, 0W-20 oil is recommended.
Bore: 86 mm
Stroke: 86 mm
Displacement: 1,998 cc
Compression Ratio: 12.5:1
Power: 200 PS (147 kW; 197 hp) at 7,000 RPM
Torque: 20.9 kg·m (205 N·m; 151 lb·ft) at 6,400-6,600 RPM
A version with direct fuel injection and twin-scroll turbocharger was introduced in 2012 to the Japanese market for the Legacy GT DIT (direct injection turbo) sedan, and the Legacy GT DIT Touring Wagon.
Bore: 86 mm
Stroke: 86 mm
Displacement: 1,998 cc
Compression Ratio: 10.6:1
Power: 300 PS (221 kW; 296 hp) at 5,600 RPM
Torque: 40.8 kg·m (400 N·m; 295 lb·ft) at 2,000-4,800 RPM



source: wikipedia

[ahausheer]

I thought this motor already has a turbo in another application. Someone should just compare the turboed motor to the BRZ/FR-S

[bimmerboy]

only time and experience will tell if these engines can safely hold boost.

[WolfsFang]

If don's turbo brz can hold 200+ dyno runs, 1/4 runs, and DD at 450hp 15-20psi. Then i have good hopes for a normal persons FI engine to last 30k+ miles.

[WolfsFang]

Originally Posted by jmaryt

man says no! period! pretty plain i would say!
chief engineer! he should know! guess that means ya put a "blower"
on it at your own peril!..kiss your warranty goodbye if it blows up!
just sayin'

why! do! you! use! so! many! exclamation! points!

[Synack]

Don's car would've blown up a long time ago with the way he's been pushing it.

6-10psi should get 100k+

[nix]

E85 is the silver bullet on Don's and Dynostys cars though. Take that out of the equation and 10psi for 100k miles is by no means a certainty.

[WolfsFang]

Originally Posted by nix

E85 is the silver bullet on Don's and Dynostys cars though. Take that out of the equation and 10psi for 100k miles is by no means a certainty.

he started with 93@6-8psi. Running around 350hp he made 100+ dyno runs on that psi.

[chulooz]

Originally Posted by mact

Subaru FA engine
(Japanese: Subaru FA engine) The FA was developed from the FB engine, however, efforts to reduce weight while maintaining durability were the main goals of the FA engine. While the FA and FB engine share a common platform, the FA shares very little in dedicated parts with the FB engine, with a different block, head, connecting rods, and pistons. The FA also features direct injection (from Toyota) and Subaru AVCS variable valve timing system. It is used in the Subaru BRZ, and is identified by a Toyota engine family code known as the 4U-GSE, which is installed in the Toyota 86 and the Scion FR-S.[6] According to Subaru, 0W-20 oil is recommended.
Bore: 86 mm
Stroke: 86 mm
Displacement: 1,998 cc
Compression Ratio: 12.5:1
Power: 200 PS (147 kW; 197 hp) at 7,000 RPM
Torque: 20.9 kg·m (205 N·m; 151 lb·ft) at 6,400-6,600 RPM
A version with direct fuel injection and twin-scroll turbocharger was introduced in 2012 to the Japanese market for the Legacy GT DIT (direct injection turbo) sedan, and the Legacy GT DIT Touring Wagon.
Bore: 86 mm
Stroke: 86 mm
Displacement: 1,998 cc
Compression Ratio: 10.6:1
Power: 300 PS (221 kW; 296 hp) at 5,600 RPM
Torque: 40.8 kg·m (400 N·m; 295 lb·ft) at 2,000-4,800 RPM



source: wikipedia

You read this right? The FB is not the same as the FA, the designations are separate; the correction stands.

[mact]

Originally Posted by chulooz

You read this right? The FB is not the same as the FA, the designations are separate; the correction stands.

Look on Wikipedia. The FB section is below the FA section of which I posted.