Welcome to the web pages of RND Engineering
(Incorporating ACE Automotive)
The core of our activities is now the bespoke development, design and
machining work undertaken in connection with our long-standing expertise in American and Ford V6
engines.
SPOTLIGHT ON ... the RND Speed 12 -
"The TVR Engine That Might Have Been"
48-valve DOHC V12 ... and 800 BHP
48-valve DOHC V12 ... and 800 BHP
For the new
RND Speed 12
Design, build images - and more!
RND Speed 12 48-valve V12 DOHC power plant as displayed on the TVR Car Club stand
at the 2025 Classic Motor Show at Birmingham's NEC in November of last year.
Whilst still in detail development, this 7.2 litre normally aspirated engine has a target power output of 800 BHP at 7,500 rpm, with 600 ft. lbs. of torque at 6,500 rpm. Utilising dual TVR Speed 6 cylinder heads on the aluminium Jaguar V12 cylinder block as its starting point, the project draws upon RND Engineering's long experience in high-power 'Vee' engines, including a 1,000 BHP twin-turbo Dodge Viper V10 road car conversion that was capable of 200 mph.
This particular engine is being built as a 'one-off' commission, and is destined to be installed in the only known road-going example of the still-born TVR 712 series built by the Blackpool factory (as opposed to race or development versions). However, as much of the specialist machining has been undertaken by modern CAD and CAM techniques, the build of another replica (or a small series?) of this power plant could well be a far less labour intensive process than would have been the case in previous eras.
RND Speed 12 cylinder block. Timing cover fitted, twin Speed 6 heads still require
camshafts, rocker gear and pullys, timing chains etc. to be assembled.
- Now check out our Chevrolet, Ford, and Rover V8 pages,
Ford V6 components and Dodge Viper V10 conversions too!