![]() ![]() ![]() ![]() 0632683" is 1 degree around the circumference & use my calipers to mark it, ie 2&7/32" is 35 & 1/2 deg. I cut a strip of newspaper & use it as a ruler cuz it is flexible & easily goes around the dampener &. I prefer to find exact TDC with the 10 dollar tool in the plug hole then measure/mark (4) paint slits on the dampener: 10-15-20 and my total (35 or 38) assuming the OE TDC slit is accurate & if it ain't then I make a new long one for it all the way across for (5) total. As said they dont play well with MSD's & in my experience they can be off up to a degree & I ain't sure if that is because they operate on a specific time delay & I ain't sure what diameter of balancer they are calibrated for & if the different makes' of balancer diameters are enough larger or smaller in dia to skew it since the marks will go farther in the same length of time on a larger dia dampener or if there is another issue but 1 deg ain't terrible. You dont need the box or the instructions. Prior posts have explained how to use it. It’s a new digital world out there.A working/functioning dialback for $15, man jump on that. What’s interesting is that the modern distributorless ignition systems (DIS) employed on all late model engines don’t require a timing light and don’t even offer a TDC mark on the balancer. The light that we referenced (PN INO-5568) is pretty sophisticated, but Innovadoes offer others that are less expensive. With the engine revved to full advance, the technique is the same - adjust the crank TDC mark until it lines up with the zero (TDC) mark on the indicator tab and the number on the back of the light will indicate the amount of total timing.įor example, the Innova digital timing lights that Summit Racing sells offer a display that will show system voltage (it uses power from the battery to run the light, so volts is accessed), dwell (if your engine is equipped with points), rpm, and the amount of timing the light has been delayed. You use these lights exactly the same way as the traditional dial-back lights, but the display and the options can be somewhat confusing. Instead of a traditional knob, these digital lights generally use up or down arrows to adjust the timing mark. Instead of a dial, these lights generally use a digital display screen with not just the amount of timing dialed back but also all kinds of other information. The modern version is a digital dial-back light. The dial on the light then indicated the total amount of advance. In this case, you rev the engine to maximum advance and use the dial to line up the TDC mark with 0 (zero) timing on the tab. No Spark Advance If your engine idles fine but struggles when accelerating, odds are its not advancing the timing. The original dial-back lights employed a simple dial on the back of the light. There are several tapes on one sheet based on the diameter of the balancer.īut if you work on multiple cars/engines, it is time-consuming and cumbersome to attach a timing tape to each engine. These are adhesive tapes that adhere to the balancer and offer accurate timing numbers so that you can use a standard timing light to check maximum advance. The simplest way to compensate is to use an MSD timing tape. But if you need to set your initial timing at a figure greater than what is offered on the timing tab, you have to guess, which is never good. A typical timing tab offers numbers up to 14 to 16 degrees Before Top Dead Center (BTDC). This works great as long as you are only setting initial timing and only if you can line up the marks from the timing tab on the engine to the TDC mark on the balancer. A normal timing lightflashes the instant the Number One spark plug fires. Jeff Smith: What you are using is what is commonly referred to as a dial-back timing light. There’s probably an easy answer but it escapes me! Thanks With a conventional light, in order to check total timing, youd disconnect the vacuum advance, rev the motor to 3000rpm (thats usually fast enough to ensure the distributor timing is maxed out), and youd pull the trigger to check timing. When I push the button, the timing moves but I’m not sure I know exactly what’s really going on here. A dial back light delays the strobe light in the amount of the of degrees on the dial. I just bought a new, digital timing light to replace my old original light. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |