Unusual external hairpin valve springs, fixed in the middle, with a valve at each end, were used.
23.
The Epiphany fire chamber, inserts and valve spring are available as performance upgrades for the Ion and SP-8.
24.
On July 7, 2010, Toyota recalled 270, 000 Lexus and Crown vehicles worldwide for improperly manufactured valve springs.
25.
Unfortunately, I lost a valve spring . . . on my qualifying run, so it ended our day early.
26.
The most widely used application are for engine valve springs ( compression springs ) due to high cyclic fatigue.
27.
Pneumatic valve springs are also found in several Moto GP motorcycle engines, debuting in 2002 with the Aprilia RS Cube.
28.
The cast " 670 " heads had taller valve spring heights than the standard D-port heads, making these heads unique.
29.
Other modifications included a water-jacketed inlet manifold, timing adjustments and stronger valve springs to eliminate valve bounce at high engine speeds.
30.
Although considered a performance engine, its proportionally weak valve springs, pistons and conrods cause the engine to redline at 6000 rpm.
