Zeo Prototype stalwart Mike Jenvey scored the 75th and 76th race victories of his career with a double success aboard his self-developed Jenvey Gunn TS6 at Snetterton.
In a national racing landscape littered with one-make categories, Zeo provides a relatively rare opportunity for innovative engineering to create some of the fastest machinery seen regularly on British circuits.
Jenvey’s 101mph Snetterton pole lap was quicker than every GT3 Am drivers’ qualifying time at last year’s British GT event and beaten by only six of the 19 Pro racers. It was on a par with LMP3 Cup pace when it visited in 2017-18.
The Jenvey Gunn is a decade-plus development of the two-litre Duratecengined Gunn TS6 in which the two-time Formula Vee champion won Sports 2000 titles in 2009 and 2012, before progressing to the British Racing & Sports Car Club’s old Open Sportscar Series – effectively a forerunner to Zeo. There, he scored title success in 2015 and 2017.
“Rear wing, diffusers, much bigger tyres, paddleshift, electronic throttle, 100bhp more,” said Jenvey when describing some of the areas of development compared with the original Sports 2000 car. Jenvey throttle bodies are, naturally, a key component in getting the Duratec to push 300bhp.
He added: “We’ve developed our own engine over many years, and we’ve been through years where we’ve blown up four/five engines in a year. I went through two years where I was rebuilding the engine every single event.
“And now it’s really, really stable. Steel crank, CNC ported heads, really good intake system, airbox and exhaust. We’ve had our own valve springs made for it, so it’s a bit of a labour of love.”
The car’s latest developments – a twin-plane rear wing and corresponding splitter modifications – came in response to Joe Lock’s ra
