Bench Pro Valve Spring Tester
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0.25% Full scale accuracy
High resolution touch screen
Auto valve spring retainer
thickness compensation
Mechanical advantage increases as the spring is compressed
Handle is always in the right position
Replaceable needle and Rulon bearings on all friction points provide smooth operation and long life
1500 lb. Capacity - 1lb. Resolution
Positive stop for repetitive height check
Converts easily for left hand use
CNC machined from billet 6061-T6
In 2019 we added an Advance Mode firmware upgrade option for our Bench-Pro valve spring testers. All testers have the firmware option preloaded and can be purchased and activated at any time. Once activated the main screen will have 3 new buttons for different target test modes and a PC Connection button. Choose your test, enter the required data, insert the valve spring, and in one motion compress the spring until it is stacked solid then release. A complete test takes less than 5 seconds. This new feature is a super time saver for serious engine builders.
Advanced Mode Firmware Option
Target Installed Height – In this screen you can enter a target installed height and valve lift. After completing a test it will give the seat pressure, the open pressure, the coil bind height, the coil bind clearance, and the valve spring rate at the target installed height entered.
Target Seat Pressure – In this screen you can enter a target seat pressure and valve lift. After completing a test it will give you the installed height, the open pressure, the coil bind height, the coil bind clearance, and the valve spring rate at the target seat pressure entered.
Target Bind Clearance – In this screen you can enter a target bind clearance, valve lift and an approximate bind height. After completing a test it will give you the installed height, the seat pressure, the open pressure, the coil bind height, and the valve spring rate.
Back in 2001 we introduced our Bench-Pro valve spring tester and for 17 years it set the bar for bench top valve spring raters. In 2018 we introduced the Bench-Pro G2, keeping the same proven long lasting mechanical design with cutting edge digital instrumentation. With the technology in a modern day race engine valvetrain, analyzing and matching valve springs is more critical than ever before. Don't trust just any valve spring tester. When it's got to be the best, make sure it's a Buxton.