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 …
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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