Powder-metal valve seats

Tuesday, September 30, 2014
Comments (0)

Modern race engines place very harsh demands on valve seats for a number of reasons, all of which are concerned with extracting the absolute maximum from the engine. In comparison to a passenger car engine, as an example, racing seats are expected to... read more
Tags :  valvetrain

Combined valve locks and lash caps

Monday, August 18, 2014
Comments (0)

Some engine components are generally ‘out of the limelight’ as far as coverage in motorsport publications are concerned. Race Engine Technology magazine and these RET-Monitor articles tend to cover most items in detail, so you can find ar... read more
Tags :  valvetrain

Avoiding damaging spring vibration

Wednesday, July 09, 2014
Comments (1)

In race engines that contain them, the valve spring is the most highly stressed component. In the best springs, the materials, heat treatments, hardening processes, manufacturing techniques and surface treatments combine to allow them to operate at i... read more
Tags :  valvetrain

Pushrods

Thursday, May 08, 2014
Comments (0)

 Pushrod engines are ‘old hat’, an anachronism in these modern times, but while the rest of the world has moved on and adopted the overhead camshaft, the users of big V8 engines have remained loyal to the old tech. That is probably a... read more
Tags :  valvetrain

Lifters

Thursday, March 27, 2014
Comments (0)

The overhead valvetrain is no longer widely used in much of the world, although it retains a firm grip on the North American market and engines based on it also appeal to the Australian motorist. Perhaps the advantage of having historically had low f... read more
Tags :  valvetrain

Design of spring retainers

Wednesday, January 08, 2014
Comments (0)

Valvetrains are often the key to improving engine performance. Given a free hand, most engine development engineers will strive for ever higher engine speeds as a route to increased power output, if friction can be prevented from overcoming the extra... read more
Tags :  valvetrain

Surface treatments for timing gears

Monday, December 02, 2013
Comments (0)

With the dominance of the four-stroke engine in both the automotive passenger car market and most types of motorsport, there are plenty of opportunities for suppliers of timing gears to improve either on standard equipment or to optimise these compon... read more
Tags :  valvetrain

Heat transfer through valve guides

Monday, October 07, 2013
Comments (0)

In most race engines, much of the heat transfer from the valve to the cooling medium – whether it be oil, water or air – is via the valve seat insert, then into the head and eventually to a fluid that will reject the heat to atmosphere. ... read more
Tags :  valvetrain
1 2 3 4 5 Next ... Last