LINGENFELTER PERFORMANCE ENGINEERING DEBUTS OVERDRIVE HARMONIC BALANCER UPGRADE FOR 2009-2010 ZR1 CORVETTE
LINGENFELTER DEBUTS OVERDRIVE HARMONIC BALANCER UPGRADE FOR 2009-2010 ZR1 CORVETTE
The experts at Lingenfelter Performance Engineering (LPE) are now offering an overdrive harmonic balancer upgrade kit designed to increase performance of the supercharged LS9 engine found in 2009 and 2010 Chevrolet Corvette ZR1 models.Track and dynamometer testing has shown the installed Lingenfelter LS9 Overdrive Harmonic Balancer Upgrade Kit (part # L220100309) will overdrive the supercharger 14 percent, resulting in a supercharger speed of approximately 17,500 RPM at 6,500 RPM engine speed – an increase over the stock performance of 15,400 RPM at the same engine speed.
“Extensive testing on the track and on a chassis dynamometer throughout the development stage ensures our newest upgrade kit provides the desired improvements in horsepower and torque, while always maintaining a safe level of boost and supercharger RPM,” said Ken Lingenfelter, owner, Lingenfelter Performance Engineering. “We pride ourselves on creating products that squeeze even more performance from today’s highest performing vehicles, and this overdrive upgrade does just that for the ZR1.”
The new LS9 overdrive harmonic balancer upgrade kit can be purchased direct from Lingenfelter Performance Engineering and includes a Lingenfelter ATI overdrive LS9 11 rib harmonic balancer (balancer hub has a keyway to accept the factory crank key); a new GM keyed LS9 friction washer; and a new GM LS9 crank bolt.
Increased boost is realized through the Lingenfelter overdrive harmonic balancer upgrade kit by overdriving, and thus raising, supercharger RPM from the harmonic balancer. The kit does not replace the driven supercharger pulley on the supercharger front cover. Lingenfelter’s overdrive damper measures 8.34” in diameter at the drive belt ribs, and is the maximum damper diameter that can be used without changing the water pump pulley diameter.
Lingenfelter’s overdrive balancer kit can also be used in conjunction with the company’s LS9 supercharger pulleys to achieve even higher supercharger speeds and boost levels. When combined with Lingenfelter’s 2.6” 11-rib 10-bolt supercharger pulley (part # L220146109), the resulting overdrive ratio is 36%, or approximately 20,800 RPM supercharger speed at 6,500 RPM engine speed. Use of the LPE 2.35” 11-rib 10-bolt supercharger pulley (part # L220136109) produces a 50 percent overdrive ratio, with a supercharger speed of 23,000 RPM at 6,500 RPM engine speed.
Based on test results, Lingenfelter does not recommend exceeding 23,000 RPM supercharger speeds with the 2009 and 2010 Chevrolet Corvette ZR1 model featuring the LS9 engine. Speeds above this level result in dramatic increases in supercharger outlet temperatures while providing little to no additional power gains.
The Lingenfelter balancer upgrade kit is not recommended for use in road racing or sustained high-RPM applications, as it also overdrives the speed of the power steering pump and the water pump on the LS9 engine. For these applications Lingenfelter recommends use of its 2.60” diameter supercharger driven pulley upgrade kit (part #L250090309) that will overdrive the supercharger 19 percent.
Installation of the Lingenfelter LS9 overdrive harmonic balancer upgrade kit requires ECM programming to adjust ECM overboost limits. When combined with other pulley changes, additional programming changes are also required. Different belt lengths and/or idler diameters are required when using the Lingenfelter LS9 damper with the stock or Lingenfelter supercharger pulleys. To learn more, call 260.724.2552 or visit www.lingenfelter.com today.
Posted by dennisp at 11/10/2010 2:17 PM 
Categories: uncategorized
Tags: Lingenfleter Corvette Hor Rod Magazine Live ZR1 School of Hot Rod Dennis Pittsenbarger
Categories: uncategorized
Tags: Lingenfleter Corvette Hor Rod Magazine Live ZR1 School of Hot Rod Dennis Pittsenbarger
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