Thread: Cam timing
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Old Jul 24, 2007 | 11:56 AM
  #15  
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From: SHEFFIELD
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Originally Posted by foreigneRS
that is only so that the rotor arm will be in the right place to distribute the spark from the king pin to the correct lead for each cylinder

there is absolutely no need for the distributor to be adjustable - it is just fixed like that as that was how it was done on that block before with a conventional distributor with points etc.

the distributor also contains the phase sensor so that the ecu knows where in the 4 stroke cycle it is, as the crank shaft position sensor does not tell it that. but that does not affect the ignition timing.

i've done plenty of timing belts, and of course i line it up correctly - but i understand what i am doing and why, not just follow a manual

you can't educate me about how it works. if you knew enough about it you would not come out with your last sarcy comment - it will either run or it won't. it will if the rotor arm lines up sufficiently, and it won't if it doesn't

i'll tell you again, the dizzy position has NOTHING to do with ignition timing - it is done by the ecu from the crank position sensor. it knows that there are 4 teeth on there and how fast it is turning so knows the time interval for each degree of crankshaft rotation.
what like your sarcy comment, why do tuners alter the dizzy to give the correct base setting when about right will do.
I have offered something for the the guy to check which from my experience would cause some of the symtoms he has listed. up to him what he wants to do.
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