HaDDeS's BRZ HKS 2.1L Stroker + Supercharger V2 [Update]

[HaDDeS]

As stated, the BRZ changed a lot last year, biggest updates were the built engine with the help of a HKS stroker kit, and Vcams, we also fitted HKS injectors, and V2 supercharger kit.

For those not familiar with the HKS stroker kit, it is composed of Forged pistons, forged rods, forged crankshaft, everything works together to increase the stroke of the engine, therefor pushing the capacity to 2.1L. The engine is also fitted with HKS Vcams to accommodate the new stroke, and offer a better output as well. We also used HKS 1mm head gasket to lower a litle bit the CR. Aside from that, every single moving part in the engine has been changed. New srpings, valves have been treated, new oil pump assembly, and tweak of the pump to insure a stronger pressure. It was a lot of work, but it was totally worth it !

Here are the HKS parts:
The monstruous Crankshaft


The intake and exhaust Vcams


The Pistons



And rods (they are actualy fractured on the pictures gives you and idea of the quality)

https://lh3.googleusercontent.com/-H..._Drag_0001.jpg

Here is the build process
The different elements on the bench


Opening and pre-fitement of the rods on the crank






The pistons in place:


Heads with new springs


And short block closed:


The process took a month and a half, we had to wait some time to recieve all the new parts, oil pump assembly was the hardest to get.

Then everything went back in the shell, and they started to upgrade my V1 HKS superchager with the new pipes, inter-cooler, and we got rid of the restrictor.

As we moved everything out, I decided to upgrade all the bushings and mounts (engine, transmition, diff, subframe , rear-subframe) with STi parts




After being properly broken-in, we putted the car on the dyno for the final settings, and after more than 30 pulls


To explain the results, Dynapack is well known to read low, my car didn't have cancer stock, its just the way it is, what is important is the delta, the progression, and mind you it is just insane.

The car is now 366 whp , considering it was dynoed 145 whp stock, and 27 lb/ft (40 kg/m) of torque at the wheels. It is a monster, the chassis mods made it even more focused and precise ... I just adore it, its monstrously good. Sadly, being winter here, I can't really go bonkers, but as soon as the weather will be a litle more forgiving, trust me i'll upload some videos.

I really want to thank Chiba-san the boss of SCREEN here in Japan, for the patience, passion, advises he offers me through the development of my car

[HaDDeS]

Here is the updated part list of the BRZ:

INTERIOR
Prova Steering Wheel
Defi CR type Gages for Oil temp, Oil pressure, Boost pressure
Defi Advance control Unit
Blitz Gage Side panel
SCREEN shifter knob
HKS OBD link Type FA20

ENGINE
----- HKS 2.1 stroker kit ----
HKS Forged Pistons
HKS Forged Rods
HKS Forged Crank Shaft
HKS Vcams set
HKS 1mm Metalic Headgasket
Nismo RB26 rod bearings
Coated Valves
HKS high volume fuel injectors
HKS rev2 Supercharger Kit -unrestricted-
HKS compressor independant oil cooling system
HKS upgraded intercooler
HKS oil cooler S type
SCREEN Oil catch tank
HKS L.A Clutch
HKS Flywheel
HKS Spark Plugs
TWOSYSTEM's custom made baffled Oil pan
SCREEN dyno tune with ECUTek RaceRom

EXHAUST
HKS Spec R EL manifold
TOMEI 70mm Over pipe
BLITZ 70mm straight pipe
HKS High Power Spec L muffler


CHASSIS / WHEELS / BRAKES
D2 racing spec brakes , 356mm slotted rotors front and rear, 8 pistons front, 4 pistons rear
HKS Hypermax SP coilovers -35mm front and rear
STi engine bushings
STi Steering bushings
STi gearbox bushings
STi rear subframe mounts
STi Differential mounts, and bushings
STi control arms and links
TWS T-66F Forged wheels, 18*9 front and rear
Hankook Ventus RS3-V2 tyres 255/35 R18 front and rear

EXTERIOR
TOM's LED Tail light

[GT86_PRAGUE]

Oh, that HKS internals are sexy
How much are they?

[HaDDeS]

Well, I am not really sure of the price in the USA sorry but with the Vcams probably around $4.500 ...

[FRSCanuck]

I'm planning on getting the HKS V2 as well, how did you like it with the stock engine? any recommended supporting mods?

great build! one of my favorite cars on here.

[TM]

Your BRZ is a MONSTER!

Amazing build.

[1Cor10:23]

Not knocking on the shops that we have here in North America by any means but I just love the culture of passion and workmanship available at tuning garages in Japan.

[HaDDeS]

Originally Posted by FRSCanuck

I'm planning on getting the HKS V2 as well, how did you like it with the stock engine? any recommended supporting mods?

great build! one of my favorite cars on here.

The HKS V2 is a monster of kit, able to produce a lot of power, torque, and keeping the native character of the car, it is awesome.

That said, you have to be careful on stock internals, the stock oil is way to thin to maintain a proper lubrication at high revs / temperatures, and some parts will suffer fast, rod bearings for example. We had a very bad surprise when we opened the block, two of my bearings were ... dead basically, so it was about time.

If you go for the HKS kit, don't boost too much (7-8psi max), and you have to install a oil pressure, temp, and boost gauge.

If you have the possibility, I would strongly recommend a full build, with forged internals, and revising of the oil pump, baffled pan ... to make sure the engine won't suffer of any form of oil starvation / lack of efficient lubrication. Once boosted, HKS recommends 10w50 grade oil ... anything lower won't be enough. But obviously this way over stock spec of the engine ... on stock internals.

Also, under high boost (15 psi and over) , stock rods have a "tendency" to bend, but they were not designed for that ...

My BRZ is now getting 15psi of boost at max, and the supercharger is unrestricted.

[Efferalgan]

Amazing build! I have a V2 SC with the Delicious tune (still not final) with stock internals though and HKS injectors and 43 mm restrictor. Max boost is 11 psi. Now thinking what oil to use. 10w50 seems a bit too extreme given the stock recommendation 0w20. So I'm choosing between Motul 5w30 and 5w40...

Even now with 0w20 oil I don't see critical oil pressure drop (Defi gauges installed). However, it's winter now with tempratures below zero, so I can't push the car really hard - not enough grip + I have an oil cooler.

[HaDDeS]

Originally Posted by Efferalgan

Amazing build! I have a V2 SC with the Delicious tune (still not final) with stock internals though and HKS injectors and 43 mm restrictor. Max boost is 11 psi. Now thinking what oil to use. 10w50 seems a bit too extreme given the stock recommendation 0w20. So I'm choosing between Motul 5w30 and 5w40...

Even now with 0w20 oil I don't see critical oil pressure drop (Defi gauges installed). However, it's winter now with tempratures below zero, so I can't push the car really hard - not enough grip + I have an oil cooler.

Thanks my friend, and the choice of oil is indeed very complicated. In your case, specifically in winter 10w50 would do more bad than good, the car would be very hard to start in the morning and the initial lubrication wouldn't be ideal at all, the stock internals need thin oil to start the engine without trouble. Then at high temp its an other story ... so maybe you should check everything once the weather gets warmer for sure ! Drive the car hard on a hot day (over 25°C ) for more than 20mins you will see the pressure drops.

Still, this HKS SC is a wonderfull solution, and if you have a chance I can just really encourage you to go for the Stroker kit + cams, its mental.

[The_Understated]

Sub'd for a totally unique build! Awesome job

[HaDDeS]

Originally Posted by The_Understated

Sub'd for a totally unique build! Awesome job

In my case, it is function over form, anytime, yet I like to have a bit of style ... that's what i tried to achieve here. Not saying its a sleeper, but its certainly not outrageous ... yes yes i know it has yellow calipers, and white wheels

I like the fact it doesn't look at all, as mean as it sounds and goes ...

[86Tony]

Awsome build!!!! what do you do in japan anyways?

[HaDDeS]

Here is a nice feature of the BRZ from my friends at 9tro

http://www.9tro.com/features/tuned-c...he-blue-rocket