Engines rated at 800-,900-, or even 1000-plus lb/ft. of torque are not uncommon. That’s a lot of torque for a clutch assembly to handle. Years ago, racers found a solution in the twin-disc clutch. The extra disc increases the clutch assembly’s total surface area, which essentially doubles the clamping force compared to a similar single-disc clutch. A twin-disc clutch also does away with the need for a really stiff pressure plate to apply high clamp loads.

A great example of a road-spectwin-disc clutch is Tilton’s new ST-246. Designed for Tremec T-56 six-speed and TKO five-speed transmissions, Tilton borrowed technology from its racing clutches More >

Rebel Performance Machines has announced the purchase of worldwide design and manufacturing rights for the exo-skeletal Yamaha R1-powered tR1ke and the Suzuki Hayabusa-powered Triabusa three-wheelers.

With the company’s design, engineering and manufacturing background, Rebel Performance Machines feel this is a great opportunity to bring new energy into both models to develop them further as a super-light, superfast, fun and exciting cars for the kitcar builder.

The company’s ethos is to provide high-quality kits with great options to customise the build coupled with detailed build manuals to ensure the process is enjoyable and easy to complete. Rebel boss, Daviod Cunningham told me: “We More >

Latest company to join the likes of Jenvey, ATR, Omex and ATR offering direct-to-head throttle body kits is Gradient Engineering, based in Hinckley, Leicestershire. Mechanical engineer, Paul Griffin is the man behind the new products.

Gradient’s range currently works on Ford CVH and Zetec and Mazda N/A and N/B engines and are beautifully made from billet aluminium.

For what seems like a bargain £1250 you get the bodies, fuel rail, linkages, velocity stacks (trumpets, to you and me!) and the appropriate mountings to fit to Zetec or CVH. The direct-to-head throttle bodies are a no-compromise design that ensures that whatever engine they are More >

Among the many quality products stocked by Merlin Motorsport at their base at the iconic Castle Combe Circuit in Wiltshire are a large selection of fuel caps.

These include a good choice of Aero Flush Fitting Caps with all associated funnels and fitting rings on their website.

You’ll also find a variety of classic styles including Aston Martin-style caps used on many classic and kitcars. The Aston caps feature a quick release action and are available in a choice of finishes to retain the classic look, but also don’t look out of place on some newer applications.

Also see the Monza style fuel More >

Most nitrous oxide kits come from America and their fittings usually aren’t compatible with our Gen II NOS bottles or BOC NOS bottles.

Now, thanks to Aeroflow, the problem has been solved. It has just released a pair of Nitrous Bottle Adaptors to fit the -04 AN and -06 AN-threads commonly found on US nitrous kits, so that they will accept UK/European gas bottles.

The adaptors are produced from aluminium and are CNC-machined for a precision fit.

They retail from £23.99 each inc VAT. For more details contact 01268 764 411 or visit www.b-gdirect.com ENDS.