Crank Trigger wheel
12-22-2005, 10:31 AM
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Crank Trigger wheel
I am looking for some information that I cant seem to find anywhere else on the internet.
I am assuming that the crank angle sensor on the s2000 is triggered by a crank trigger. Could someone please tell me how many teeth are on this trigger?
The camshafts have two TDC sensors and I am also assuming that these are triggered by a cam trigger. Could someone comfirm for me that this is correct and how many teeth there are for each of those?
THank you very much
Rovin
I am assuming that the crank angle sensor on the s2000 is triggered by a crank trigger. Could someone please tell me how many teeth are on this trigger?
The camshafts have two TDC sensors and I am also assuming that these are triggered by a cam trigger. Could someone comfirm for me that this is correct and how many teeth there are for each of those?
THank you very much
Rovin
12-22-2005, 02:02 PM
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The crankshaft geartooth sensor wheel is located behind the timing cover and has 12 teeth equally spaced on it.
The camshaft position geartooth sensor wheels (2 total one on the rear of each camshaft) has 3 teeth on each of them. The teeth are not equally spaced. To envision the spacing on the cam wheels, imagine that there were 4 teeth equally spaced at 90 degrees apart, then remove one tooth.
If you are thinking about using the crank geartooth wheel to trigger an MSD ignition it will work if you remove all but two teeth (180 degrees apart). However, for high rpms (greater than 10,000) it would be better to have a larger diameter wheel.
I hope this helps.
Greenlight
The camshaft position geartooth sensor wheels (2 total one on the rear of each camshaft) has 3 teeth on each of them. The teeth are not equally spaced. To envision the spacing on the cam wheels, imagine that there were 4 teeth equally spaced at 90 degrees apart, then remove one tooth.
If you are thinking about using the crank geartooth wheel to trigger an MSD ignition it will work if you remove all but two teeth (180 degrees apart). However, for high rpms (greater than 10,000) it would be better to have a larger diameter wheel.
I hope this helps.
Greenlight
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12-23-2005, 02:33 PM
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I'm not really sure what your asking. I thought the crank had 24 teeth. but the cam sensor has three teeth spaced as posted earlier.
The computer counts the signals from the crank sensor, while watching for a signal from the cam sensor. The computer knows that it should only have six signals from the crank until it sees a cam signal. When it counts over the six signals from the crank it knows to sync and start the firing sequence for the injectors and the coils.
Each of the three teeth on the cam wheel will match up with one of the cylinders at TDC. The the computer knows that every six signals from the crank equals another piston at TDC.
The computer counts the signals from the crank sensor, while watching for a signal from the cam sensor. The computer knows that it should only have six signals from the crank until it sees a cam signal. When it counts over the six signals from the crank it knows to sync and start the firing sequence for the injectors and the coils.
Each of the three teeth on the cam wheel will match up with one of the cylinders at TDC. The the computer knows that every six signals from the crank equals another piston at TDC.
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