Finland’s Fastest: A Straight-Line Supra

Without question, the ’90s will be remembered as one of the golden eras of Japanese performance car production. Technology born in the ’80s was developed and fine tuned, and by the time the new decade rolled around Japan was in the midst of a high-tech, boost-fuelled, all-wheel drive automotive revolution.

The JZA80 Toyota Supra RZ was a car that looked to the future, but also celebrated the past. It was the muscle car of the era, combining a cutting-edge 3.0-liter twin-turbo inline six with a classic rear-wheel drive chassis. There was no lightweight focus; what the Supra lacked in athleticism it made up for with brute force. Yes, it packed the same 276hp as all other Japan performance cars of the time (on paper at least), but with a little fine tuning it was capable of so much more. It’s little wonder that the MkIV became a Japanese favorite for highway racing and other straight-line speed pursuits, including drag racing.

And that brings me to the subject of this I Am The Speedhunter submission: Kalle Koivumäki’s ’93 Supra, Finland’s current fastest street class drag machine.

IATSH_Supra_JAPE0061

You might be looking at Kalle’s KKD Motorsport creation and thinking that there’s not much ‘street’ about the build, and you’d mostly be right. This is not the sort of car you’re going to scoot down to the shops for a gallon of milk in. It’s more regulation based; the Supra maintains it OEM steel body and front glass windscreen, plus ancillary items such as a horn, lights and a blower fan in the cabin. It also runs on D.O.T. tires.

Everywhere else, Kalle has gone nuts in the quest for lower ETs and higher MPH speeds through the traps. One aspect of the build focussed on cutting as much weight as possible, and in this respect the Supra is a far different car than the one it left the Toyota factory as. Carbon fiber features throughout, in the doors, the front clip and rear hatch, while the side and rear windows are polycarbonate items.

IATSH_Supra_JAPE0146

Then there’s the beautiful engineering hidden away under the Supra’s lightweight skin…

IATSH_Supra_JAPE0070

Up front, the Supra stays true to its roots with a 2JZ-GTE, but this engine’s been taken to the moon when it comes to upgrades. Inside, there’s a Titan Motorsports 3.4-liter stroker kit built around a 94mm billet crankshaft, 87mm CP forged pistons and Carrillo H-Beam forged connecting rods. The DOHC 24-valve cylinder head has been heavily ported and fitted with race cams and oversized valves.

On the intake side of the equation you’ll find a Hypertune manifold and 90mm throttle body, and on the exhaust a gigantic 95mm Holset HX80 turbocharger perched high on a KKD Motorsport stainless steel manifold and running dual Precision Turbo wastegates. Fuelling comes via a dozen 2,300cc injectors, ignition is by MSD, and the firing orders are given by a Tatech 38 Pro engine management system.

As you’d expect, the package is making big power. Here’s a video from back in 2015, where on KKD Motorsport’s engine dyno 1687hp was achieved with 2.9bar (42.6psi) boost pressure. It’s since seen more than 3.2bar (47psi).

IATSH_Supra_JAPE0097

It has the driveline to back it up too, with a Liberty Exteme-T 5-speed transmission, RAM triple-disc clutch, and 3.5-inch chromoly driveshaft running out to a KKD Motorsport chromoly housing with a 9.5-inch Spool diff. The rear suspension features a ProMod-spec 4-link with Koni electric shocks.

IATSH_Supra_JAPE0124

The attention to detail throughout is amazing, and the cabin in particular shows the extent Kalle has gone to in creating this quarter-mile monster. It’s all his own handiwork too, the only exceptions being the electrical wiring and the paint.

As it stands now, the KKD Motorsport Supra is – as mentioned earlier – the fastest ‘street’ car in Finland, but further to that it’s also Europe’s fastest Supra and the sixth fastest Supra in the world, according to Kalle. It’s best pass to date: 7.13 at 315km/h (195mph), which you can watch above.

IATSH_Supra_JAPE0065

To put that performance into perspective, this Toyota goes 0-100km/h (62mph) in 1.45-seconds, 100km/h (62mph) to 200km/h (124mph) in 1.82-seconds, and 200km/h (124mph) to 300km/h (186mph) in 3.31-seconds. It’s maybe not what Toyota had in mind when it designed the JZA80 Supra, but it’s builds like this that make us really appreciate it did so in the first place.

Brad Lord
Instagram: speedhunters_brad
brad@speedhunters.com

Photos by Jape Tiitinen
Instagram: jap3
Website: jtmedia.fi

ADVERTISEMENT

Comments

Add comment

E-mail is already registered on the site. Please use the Login form or enter another.

You entered an incorrect username or password

Sorry, you must be logged in to post a comment.

11 comments

by Oldest
by Best by Newest by Oldest
1

This is what happens when your winters are 9 months long.

2

Could they shave even more time by deleting the cooling system? I don't know much about the rules and regs of the competition they're running in and whether it denotes a certain fuel to be used, it's just something I notice on properly fast drag cars, usually the reason for having no cooling system is because the engine is being run on cold burning fuels and for a very short period of time.

3
David Sciberras

Youll find all the big cars Ekanoo, Zoian, El Humildee dont run water through the engine block. Only through the head. Yes to save on weight and also because it isnt needed. Concrete filled galleries also adds to the strength of the block. At 100+ psi its needed.

4

Thinking about it, it would kind of make it not really useable on the street doing that ha, ignore me.

5

But this car isn't literally used on the street, so it wouldn't matter.

6

Amazing how fast this 'Street car' is and its hard to believe that there are 5 other Supras that are faster than this out there, I assume that they aren't 'street' ones?

7
David Sciberras

Street class. Not street car. It retains a steel body and factory front glass. I dont know which other cars you are talking about but id be assuming they are composite bodies and run in a factory extreme/promod style class.

8

Well now I know!

The article reads; 'the fastest ‘street’ car in Finland, but further to that it’s also Europe’s fastest Supra and the sixth fastest Supra in the world, according to Kalle.'

They are the cars I was referring to.

9
Lukas Kerkhoff

What a monster :D

It's kinda sad to see so many Supras getting used only for the straight line though

10

I agree. It's like 240s/Silvias and drifting.

11
Mike Donnelly

Finnish Street Outlaws? lol

OFFICIAL SPEEDHUNTERS SUPPLIERS