What does it take to build, tune, and drive a monster Mitsubishi Evolution VIII with a 4.1-litre VR38DETT putting down 1065 hp to all four treads — on pump gas, no less? On this episode of Tuned In, we talk to the Armchair Tuner to find out.

Use “EVO100” to get $100 off HPA’s Tuning Starter Package: https://hpcdmy.co/tuningpackageb

Conrad Bradley has been building fast cars and bikes for a long time, although he currently works outside of the automotive industry in the nuclear field. Conrad couldn’t tell us much about his current work projects for obvious reasons, but when it comes to his many interesting automotive projects, he’s an open book.

Over the years, Conrad’s built many fast cars — from rapid Subarus, to even faster Evos, to an immaculate Beams-powered AE86 — we discuss all those builds in this conversation, but it’s his one-of-a-kind Evolution VIII that we’re most interested in.

We dive deep into this build with Conrad, digging into the big questions, like:

• Why ditch the 4G63?
• Why the VR38DETT?
• How is it still 4WD?
• What was the hardest part of the build and how was it dealt with?
• Has it changed how the car drives?
• Why even build something as unique as this car in the first place?

This is a fascinating look into a very serious build that presented a lot of problems, requiring unique solutions.

Further into the conversation, we also discuss the challenges of owning and operating a tuning shop, reflashing challenges, Evo strengths and weaknesses, and much more. This is a great listen for anyone interested in thinking outside the box when it comes to building cars and going fast.

Follow Conrad here:
IG: @armchairtuner
FB: Armchairtuner
YT: Armchair Tuner

Don’t forget, you can use “EVO100” to get $100 off HPA’s Tuning Starter Package: https://hpcdmy.co/tuningpackageb

Time Stamps:
4:25 How did you form an interest in cars?
14:01 How did you end up owning a tuning shop?
20:43 Pros and cons of owning a tuning shop.
27:50 Transition from motorbikes to cars.
29:23 Why JDM vehicles?
34:05 Reflashing JDM vehicles.
39:29 Was it Subaru's reliability issues that drove you to the Mitsubishi platform?
43:04 Toyota AE86.
58:03 Back into the Mitsubishi world? Evo X.
1:04:17 Manufacturers making it difficult for us to tune modern engines.
1:09:34 What came after the Evo X?
1:11:31 Building an Evo for drag racing.
1:24:36 How did the Evo GT-R come about?
1:27:36 What was involved in fitting the VR38?
1:34:49 What is the transmission?
1:41:22 Motec M1 custom package for 4wd setup
1:47:10 How much does it weigh with the VR38?
1:48:06 What was the goal for the VR38?
1:56:07 Are you running PDMs?
1:58:50 Are you using the data from all your sensors for anything in particular?
2:00:02 Is the Evo GT-R finished?
2:06:09 Final 3 questions.

Using the Blueprint Racing 6.53 @ 213mph Mazda 6 for some examples we dive a little into how to build a rotary engine for drag racing.

Use ‘PODCAST75’ for $75 off your first HPA course here: https://hpcdmy.co/hpa-tuned-in

Getting 1500HP out of a rotary engine isn't hard these days with the knowledge in the industry, but doing it with a window of safety and repeat reliability is still a struggle as Jon of Jon Blanch Racing explains. Naturally, some comparisons are made between the rotary and piston world in respect to aftermarket part support which has been growing in recent years but still lacks in many areas no matter how big your budget is, but most interestingly from what is out there the OEM Mazda rotors with some modification are still the go-to choice for performance builds.

An area where the aftermarket has made massive improvements, however, is when it comes to the plates with billet options not necessarily helping engine builders and tuners make more power but instead giving a little more reliability and tolerance to the small windows you have to work within when it comes to getting power out of your rotary.

Porting is also discussed and Jon shares why a semi-peripheral port (semi-pp) is preferred along with why the perfect port placement depends on more than just a single perfect physical location.

Quad Rotor vs V8, Procharger vs Natural Aspiration and more.

Use ‘PODCAST75’ for $75 off your first HPA course here: https://hpcdmy.co/hpa-tuned-in

It's hard to nail form and function, but Carl Thompson has it down to a fine art when it comes to drift builds between his old 1300HP 26B 4-rotor Aristo/GS300 build and this high compression 'small block' @Mast Motorsports 454ci (7.4L) LSX based V8 Nissan S15 Silva one that is another work of art. Even if you are a solid rotary fan it's hard not to appreciate the same level of detail and perfection that has gone into this LS-based S15 build.

We'll discuss why Carl moved away from his 4 rotors (one of which now powers Rob Dahms AWD RX7 build) and towards the MoTeC M130-controlled LS V8 platform as he has gotten more serious about competing and doing full-season campaigns along with why he chose a naturally aspirated setup despite having a procharger bolted on at some point in time.

The difference in power levels required for D1NZ and US series also pops up as well as the performance increases gained from his Dailey Engineering dry sump system and what the main driver displays and warnings he pays attention to during a competition run and interestingly why he went with a cast-iron LSX based block over the aluminium LS(x) blocks that are also able to handle sizeable power figures.

00:00 Intro
00:25 Rotary Vs LSX
01:31 Engine Specs
02:10 Iron Vs Alloy Decision
03:35 Procharger Vs N/A
05:06 Procharger Powerband
06:08 Dry Sump Setup
07:02 30HP+ From Good Vacuum
08:49 @MoTeCAustralia ECU, Indiindividual cylinder fuel delivery
10:55 Dash Display Settings
12:21 Drivetrain
14:00 Diff, Suspension

To get power to the ground the car runs a Holinger Engineering RD6 sequential, Tilton bell housing, flywheel and triple-plate carbon clutch leading to the Winters 25cm IRS quick-change and 35-spline stub axles.

A MoTeC M130, PDM30 and C125 logger/dash display and EMtron ETC4’s (for individual cylinder monitoring) round up the electronics side of things and giving Carl the ability to clutchless shift off the line.