Two blocks??? Two hayabusa cylinder heads maybe?
Photography Credit: Alec White/SCCA Appalachian Hillclimb Series
The Tire Rack Ultimate Track Car Challenge Presented by Grassroots Motorsports is now just two weeks away, October 24-25. However, you can still sign up and join the field that includes this 2013 Radical SR8 of Heikki Rinta-Koski.
Heikki calls his Radical a “very grassroots effort made with production parts.” He adds, the power plant consists of “two Suzuki Hayabusa blocks, with two Mitsubishi turbos and a Porsche GT3 intercooler, [plus a] Syvecs S8 engine management system, upgraded brakes, Bosch Motorsport ABS system.”
Heikki did five hillclimbs with his Radical SR8, including the full SCCA Appalachian Hillclimb Series schedule. Plus, he did a time trial and even an autocross to shake it down. Heikki has proven it’s fast wherever it goes, and what better way to test how fast it is than by running the Tire Rack Ultimate Track Car Challenge on October 24-25 at NCM Motorsports Park in Bowling Green, Kentucky, alongside the Tire Rack SCCA Time Trials Nationals Powered by Hagerty.
To sign up your car, and compete for a wealth of prizes, click here.
[Sign up now: Many awards offered at the Ultimate Track Car Challenge]
For more information, visit ultimatetrackcarchallenge.com.
The Tire Rack Ultimate Track Car Challenge is presented by Grassroots Motorsports and Sunoco, the official fuel of the UTCC, in association with Wilwood Engineering, CRC Industries, HMS Motorsport, XS Power and AMT Motorsport, with trophies from Miller Electric, Vorshlag, Hoosier Racing Tire, Call to Grid, BimmerWorld and Falken Tire.
Two blocks??? Two hayabusa cylinder heads maybe?
In reply to Flynlow :
From memory they use a pair of motors make a V8.
I've heard of using two literbike heads on a low-production V8 block (almost said "custom" but I don't think that's the right word here) and I think it's not uncommon in a Radical, but to say using two blocks is weird. Seems at that point you're just talking about two Hayabusa engines, though I guess there's the question of the gearbox guts and how they're joined up...
Two full engines/blocks seems hard to package, especially in something like a Radical. I'm curious to hear what the reality is.
EDIT: Yeah, Radical even does their own: https://en.wikipedia.org/wiki/Powertec_RPA
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