Individual Cylinder Knock Controller is active to 10,000 RPM Ten degrees of knock retard and plus or minus five degrees of manual retard Can retard as much as 3 degrees per ping * Re-advances one degree every twenty revolutions Rev limit adjustable in 50 RPM steps, read directly from a ten turn dial counter Four, six, eight cylinder select switch Knock sensor sensitivity control

Two headphone jacks and a volume control to listen to knock sensor Display selector switches the display between knock retard and manual retard Display freeze switch to hold test results * Knock Controller/ Knock Detector switch Retard offset knob allow you to maintain the stagger while changing the timing on all cylinders Test connector outputs for data collection include sync, clock, and cylinder by cylinder retard voltage

System Operation

1. Set the manual retard slide controls to midrange, then set the base timing with the distributor.

2. Make a pull on the dyno. If knock is present, the controller will show how far each cylinder is being retarded. Use the freeze switch to capture the peak retard amount.

3. Shut down the engine to study the display. If your goal is to "stagger time" the engine, you can use the manual retard controls to "cancelout" the knock retard.

4. Make another pull, and check for any knock retard. If there is none, read the required timing for each cylinder directly off the slide controls. Use these readings to adjust the lobes on the trigger wheel in your distributor.

This is the precursor to our Knock Finder Dyno Control Unit. It shows which cylinders are being retarded by the SafeGuard. As with the Knock Finder, the display is synchronized to the engine with a timing light pickup on #1 sparkplug wire.

*For Knock Finder sales, call representative in your area:

West Coast region, Research Sciences, at (818) 349-9508Midwest region, Precision Automotive Research, at (630) 766-4402