How much boost can the stock fa20 handle?

[Somerandom18]

Expensive NA Porsches have dips too.

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[Irace86.2.0]

Originally Posted by gtengr

They would have a similar discrepancy in flywheel horsepower too. FI takes hp to operate but it's not the same as drivetrain losses.

Drivetrain losses seem to be a percentage of horsepower. Spinning a supercharger is probably more of a fixed number. Big blowers might take 200hp to turn. Small ones much less. Regardless, a turbo will show higher whp for a given engine hp.

Originally Posted by 86 South Africa

Lol. No manufacturer would do this on purpose.
The torque dip is the nexus of emissions and global laws Toyota had to meet combined with building a “cheaper” sports car.

More time and money (& a change in design) and they’d probably solve this.

Just headers + a tune remove the dip.

Yeah it is there for emissions and gas mileage probably mostly. I’m just suggesting it could be a good thing, and if so perhaps designed.

[86 South Africa]

Originally Posted by Irace86.2.0

Spinning a supercharger is probably more of a fixed number. Big blowers might take 200hp to turn.

A bit off topic, but a top fuel drag car takes 600hp to turn their monster super chargers.
Mind blowing!

[Strife26]

Originally Posted by guybo

You said you only wanted around 250 at first (that's how everyone starts out).... pushed it to 278... now you want 350.... or 400.... then what? Either you blow the engine or want more. There's no stopping.

From all the threads I have read here, 278 is about the safe limit, then you will start to break shit. There's not only the engine and fueling, but driveline, gearbox, tranny etc etc. You're going down a rabbit hole that can only be filled with money.

So the only answer is- the stock engine will take however much money you want to shovel inside of it.

Fk that hole, grab a shovel! I'm in, lol!

Turbo kit being fabricated. I will be trying to stick with 8-12 boost internals permitting. Planning to update rods and pistons. I don't want insane. I just want boost and reliability, as much as possible. But I run the car hard 110% : (.

[whataboutbob]

Originally Posted by guybo

You said you only wanted around 250 at first (that's how everyone starts out).... pushed it to 278... now you want 350.... or 400.... then what? Either you blow the engine or want more. There's no stopping.

From all the threads I have read here, 278 is about the safe limit, then you will start to break shit. There's not only the engine and fueling, but driveline, gearbox, tranny etc etc. You're going down a rabbit hole that can only be filled with money.

So the only answer is- the stock engine will take however much money you want to shovel inside of it.

^This.

[Sleepless]

Originally Posted by ajc209

160WHP stock and 250WHP boosted - much more than that and its a bit of a lottery if you have good set of rods or not.

This is the correct answer.

I ran 260WHP for two years, heavy track use no problems. Upped to 320 and lost two engines due to rods. Now back to 260.............

[Spawn_Of_Creation]

The general information I have gathered is that it will handle about 280whp reliably on the stock engine with proper tune and fuel, but it requires a few supporting mods such as clutch and oil catch can, and possible cooling. Beyond that you are looking at replacing your connecting rods, which are the weakest part of your engine. You should get forged pistons and bearings done at the same time.

The shop near me called AWD Tuning does those 3 things to support 500hp. Beyond that you are looking at sleeves and possible head work.

[Kalebhall]

Originally Posted by FRS Justin

push until you find the happy spot or blow it up, no worries as long as you have 7k I will sell you a built fa20

Is it fully built?