If the cylinder heads are on the engine, you will need to add air pressure to the cylinder to hold the valves in place. Our example is the Craftsman 47089 compression test kit using the 14mm long ...

At Circle Track, we're all about helping you do more for yourself. But sometimes that's just not realistic. That's not casting doubts on the intelligence of our readership. Just like your mom, we ...

The scenario goes something like this. Our LS3 used to rev freely and make power all the way up through 6,800 rpm, but now it struggles to get to 6,000 and power is definitely down. After a thorough ...

Rotary engines (also known as Wankel engines and Wankel rotary engines) are quite different from piston or "reciprocating" engines. One of the distinguishing features is that they don't need valves to ...

Modern internal combustion engines — including those that run on diesel fuel — require a lot of special parts and systems to prevent dumping excess emissions into the atmosphere. Not only are those ...

Nice feature from Avintia Blusens and their Crew Chief Francesco Guidotti, doing some explaining on what pneumatic valves are, how they work and why more teams are going for this technology. The ...