Accelerated Performance 2013 BRZ - FRS Turbo Kit Designing

[boarder1995]

232 wheel HP. Anything over 210 rear wheel for me is great improvement over stock, especially if torque is improved as expected and the big torque/power dip disappears.

[DYOLF26]

Of course it is an entirely different platform but there are TONS of boosted k-series Honda motors pushing all the way up to 500 whp on stock internals without major issues.They have tranny issues way before engines ones. And they have around 12.5:1 compression ratios as well. I personally feel it comes down to quality parts, excellent tuning and of course a well versed tech behind the build. I have read that most people with that much power usually are running E85 or water/methanol injection to keep temps down.

[inz]

Keeping in mind you're comparing a proper engine to a silly boxer engine, I agree.

There are about 10 other engines I'd have chosen to use in the 86, and all of them before a boxer.

[Alias]

Originally Posted by inz

silly boxer engine

There are about 10 other engines I'd have chosen to use in the 86, and all of them before a boxer.

Well, it's a good thing you weren't in charge of designing this car because the low center of gravity it's able to achieve from a boxer style engine is kind of a major focus of the vehicle.

[Gambit]

Originally Posted by Alias

Well, it's a good thing you weren't in charge of designing this car because the low center of gravity it's able to achieve from a boxer style engine is kind of a major focus of the vehicle.

+1

[MSIZZLE]

looking forward to this

[Psycho_Sid]

Originally Posted by Don@Accelerated

Don,
Great work! Just a few questions. Is that turbo setup to be water cooled? (ports on the side of the center section) And is the wastegate gonna stay vented to atmosphere or will it be recirc'd to the downpipe?

[Chewie4299]

Originally Posted by Psycho_Sid

Don,
Great work! Just a few questions. Is that turbo setup to be water cooled? (ports on the side of the center section) And is the wastegate gonna stay vented to atmosphere or will it be recirc'd to the downpipe?

Sounds like it's going to be oil-cooled from the talk of scavenge pumps and returns to the oil fill cap and whatnot.

[86design]

Originally Posted by Don@Accelerated

Just in case the turbo kit makes this thing take flight, I've been working on a very simple bolt on system of brakes. Rotors are over an inch larger each. Rotor thickness is increased as well. Pictured are the super expensive DBA 5000 series rotors which are lighter than the factory rotors.

sorry for the question but could the stock brembo brakes from a STI fit our FRS/BRZ cars?? would we need a bracket ?

[Psycho_Sid]

Originally Posted by Chewie4299

Sounds like it's going to be oil-cooled from the talk of scavenge pumps and returns to the oil fill cap and whatnot.

Yeah, I remember reading that, but by looks of the turbo it could be water cooled as well... just didn't know for sure.

I just need to hurry up and buy one of these car!

[inz]

Originally Posted by Alias

Well, it's a good thing you weren't in charge of designing this car because the low center of gravity it's able to achieve from a boxer style engine is kind of a major focus of the vehicle.

I know exactly why they did it and it's a great package for what it is - I'm sure you gathered from my post that I'm not a fan of boxer engines which is clearly a baised opinion.

Toyota marketed this car to the enthusiast/modifier market, and yet they used a flat 4 engine and made the PCD 5x100... Seems to hinder the target market a little don't you think?

It's all a little over complicated if you ask me, a straight 4 TOYOTA engine would have been a much better option. Any hey, everyone knows the cure for understeer is more power

They're not really a Toyota anymore - and that disappoints me a little considering they're bringing back (or at least many would argue) their flagship car.

Anyway, back on topic, Looking forward to seeing some dyno results for this car

[Coheed]

Originally Posted by rusty959

Im not sure why we would take bets on hp... with fi hp is related to how much boost, and how much boost is easily changed. However with this setup the limiting factor may be how much can be wrung out before too much knock etc becomes a problem.

hp is related to mass flow rate, not boost. a slightly larger turbo will make more hp on a given psi.

larger turbos have better flow characteristics and provide higher VE and scavenging. All with less retained heat, lower intake temps, and less tendency for knock in most cases.

A knock limit on a GT25 may be 6psi, but upgrade to a GT30r and you may find that 8-10psi is safe.

[Coheed]

Originally Posted by inz

I know exactly why they did it and it's a great package for what it is - I'm sure you gathered from my post that I'm not a fan of boxer engines which is clearly a baised opinion.

It's all a little over complicated if you ask me, a straight 4 TOYOTA engine would have been a much better option. Any hey, everyone knows the cure for understeer is more power

I agree for the most part. The boxer design has inherent limitations when it comes to its design. An inline 4 would have been a great option, provided toyota didn't use any current designs.

All the new toyota engines I have worked on have shown great promise, with poor execution or a large focus on fuel economy/emissions. they have been weak in factory form, and don't enjoy hp mods without power-related failure in stock-form.

The 5s and 3sgte were strong engines, their new engines are weak.

A great, chain-drive 86x86 inline 4 would be sweet. But in the company of SR20, 4B11, and K20... it's got tough competition

[inz]

Don't forget the 4G63 and more importantly, the 4AGE.

Imagine if they'd reworked/revised the 4AGE for the new 86... If only. Im waiting for someone to drop a 4AGE-F20C-SR20DE/VE combo into one of these. 2J's are cool and all - but they're a little bit of overkill...

Just a tad.