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Gen 3 Hemi Cam Sensor and Trigger Wheel Help Needed #1396903 03/03/13 08:40 PM 03/03/13 08:40 PM
Joined: Jan 2003 Posts: 3,871 Smyrna, South Carolina STEFF OP master
STEFF OP master Joined: Jan 2003 Posts: 3,871 Smyrna, South Carolina	I need some help in understanding the Cam Sensor and Trigger Wheel. This is from my Gen 3 Hemi. Based on the design of the trigger wheel, the Cam Sensor must actuate when it hits an opening. The ring has 8 equally spaced openings, which makes sense. But, what I don't understand is, some of the openings have two additional openings or one additional opening. What are the purpose of the additional holes, and why are they not the same for every cylinder? First Pic shows 3, then one, then one. Next is 2, then 3, then 2 Lastly 2, then one

Re: Gen 3 Hemi Cam Sensor and Trigger Wheel Help Needed [Re: STEFF] #1396904 03/03/13 09:08 PM 03/03/13 09:08 PM
Joined: Jul 2010 Posts: 2,091 Delray beach, Florida P Performance Only top fuel
Performance Only top fuel P Joined: Jul 2010 Posts: 2,091 Delray beach, Florida	My understanding is that the odd spacing and number of holes is so the sensor/ computer actually recognizes the true position of the camshaft. If all it had was a bunch of evenly spaced holes the computer wouldn't be able to differentiate on position from the next. machine shop owner and engine builder

Re: Gen 3 Hemi Cam Sensor and Trigger Wheel Help Needed [Re: STEFF] #1396905 03/04/13 09:39 AM 03/04/13 09:39 AM
Joined: Jun 2005 Posts: 2,776 Ontario Canada M MattW master
MattW master M Joined: Jun 2005 Posts: 2,776 Ontario Canada	Waste spark. To fire the unburnt fuel.

Re: Gen 3 Hemi Cam Sensor and Trigger Wheel Help Needed [Re: Performance Only] #1396906 03/04/13 11:51 AM 03/04/13 11:51 AM
Joined: Jan 2003 Posts: 17,844 S.E. Michigan ZIPPY I Live Here
ZIPPY I Live Here Joined: Jan 2003 Posts: 17,844 S.E. Michigan	Quote: My understanding is that the odd spacing and number of holes is so the sensor/ computer actually recognizes the true position of the camshaft. If all it had was a bunch of evenly spaced holes the computer wouldn't be able to differentiate on position from the next. That's my understanding of it as well. Rich H. Esse Quam Videri

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