fuzzy-hair-man wrote:
I can't find the video now but if I remember correctly it said you can get a more precise and cleaner signal from the crank, the cam is used to determine tdc compression from tdc exhaust.
Cleaner signal because it's not subject to a belt or chain flapping around, I this this may have been more in relation to twin cam heads and timing belts rather than chains but I expect someone can clarify that.
Yup that's pretty much it! Cam position sensor wheel only has one "tooth" and it's big! Crank sensor wheel has a whole row of them, Ford us 36 teeth (well 35 as TDC is missing so the ECU can work things out). I did look at making a housing that had both but to get a crank position sensor in that had big enough teeth (about 5mm. by 5mm. for a normal hall sensor) it had to be the size of a crank pully...
Then I found this sensor that was neat and very easy to modify to fit the Min.