This content is rated TV-MA, and is for viewers 18 years or older. Are you of age?
Sorry, you are not old enough to view this content.

Car Tech Video: Coates Spherical Valvetrain

About Video Transcript

Car Tech Video: Coates Spherical Valvetrain

0:51 /

A radically new way to get stuff in and out of engine cylinders: spherical valves.

[ Music ] ^M00:00:05 [ Background Music ] >> Okay, you engine gear heads. Here's something new when it comes to valve train technology: spherical valves. These rotating spheres that have these nachos cut out of them are the key. As they turn on ceramic bearings, they can achieve very high engine RPM and can both charge and evacuate cylinders very efficiently at those high RPM. It allows for higher compression ratios, less the air breathing, and of course high RPM without the valve float that kills traditional valve trains. This is the Coates spherical rotary valve train and it can hit about 15,000 RPM, 15 to 1 compression and thanks to those ceramic bearings, it does not require typical oil lubrication on the valve train. [ Music ]

New releases

RHA T10i: Stainless steel headphones...
2:04 October 31, 2014
The $200 RHA T10i is a great sounding in-ear headphone that's well-built and has some nice extras, including...
Play video
The XYZPrinting da Vinci 1.0 AiO...
3:00 October 31, 2014
CNET editor Dong Ngo demonstrates how well the XYZPrinting da Vinci 1.0 AiO 3D printer can replicate a 3D...
Play video
Verizon-exclusive Sony Experia...
2:35 October 31, 2014
If you've been craving Sony's Xperia Z3, this sleek alternative comes close but is a little different: it...
Play video
Amazon Fire Phone burns on
2:54 October 31, 2014
Amazon hasn't given up on the Fire Phone, Facebook makes it easy to mask your identity with Tor, and the Starbucks...
Play video
The 404 Show 1,574: Halloween episode,...
26:08 October 31, 2014
It's an ultra-creepy episode of The 404 today -- way creepier than normal. Will Seth Rogen play Steve Wozniak?...
Play video
Skylink's boring security system...
2:37 October 31, 2014
This low-cost, DIY smart setup offers basic security without monthly fees
Play video
Everything you need to know about...
2:05 October 31, 2014
Google's Android Wear software is cropping up on a host of smartwatches. But what exactly is Android Wear...
Play video
Most-anticipated games for Holiday...
3:03 October 31, 2014
The most sought after new titles that gamers want for the holidays.
Play video