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Author how many pulses per revolution does the c20xe produce?
birchieboy
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Registered: 18th Jan 06
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9th Jan 08 at 11:22   View User's Profile U2U Member Reply With Quote
as title reads i need to know how many pulses per revolution the c20xe produces and if this changes through the rev range?

tried vauxhalls and serching the net with not luck
ShEp
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Registered: 9th Aug 05
Location: Dingwall, Highland
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9th Jan 08 at 11:24   View User's Profile U2U Member Reply With Quote
count the teeth on the crank pulley?
ShEp
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9th Jan 08 at 11:29   View User's Profile U2U Member Reply With Quote
and it shouldn't change, as its still one revoloution no matter how fast it turns

or am i getting the wrong end of the stick completely
birchieboy
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9th Jan 08 at 11:32   View User's Profile U2U Member Reply With Quote
would that work.....sound like it would
but i read up that some change over certain rpm how would that happen?

i read up as a general guide that 4cylinder engines produce 2 pulses per revolution

but i need to know for sure and be exact as its to do with my digial tacho
birchieboy
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9th Jan 08 at 11:34   View User's Profile U2U Member Reply With Quote
its how many ignition pulses per revolution of the engine
ShEp
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9th Jan 08 at 11:35   View User's Profile U2U Member Reply With Quote
hmm im unsure then

wait till one of the more in depth mechanical guys come on,

they'll be able to help further
ShEp
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9th Jan 08 at 11:39   View User's Profile U2U Member Reply With Quote
I know that the crank sensor sends the pulse reading to the ignition

the crank pulley turns twice to the cams turning one full turn,

and im unsure on the change higher up the revrange, its possible but i dont see how it changes as the pulley doesnt change
Dan295
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9th Jan 08 at 11:39   View User's Profile U2U Member Reply With Quote
the distributer works at camshaft speeed does it not, and this is half engine speed, so surely 3000rpm is 1500 pulses?
birchieboy
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9th Jan 08 at 11:45   View User's Profile U2U Member Reply With Quote
i think that right
i need to just put in my digital tacho how many pulses in 1 revolution
then if the c20xe does change pulses higher up the rev range i need to put in that info too.
if it doesnt change then it will be ok
ShEp
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9th Jan 08 at 11:58   View User's Profile U2U Member Reply With Quote


hope you get it working mate
birchieboy
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10th Jan 08 at 13:36   View User's Profile U2U Member Reply With Quote
any help
byrnie_2004
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Registered: 11th Mar 07
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12th Jan 08 at 17:22   View User's Profile U2U Member Reply With Quote
amount of pulses shouldn't change per revoloution. otherwise your timing would be doing something strange as its taken off the crank sensor.
Robin
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Registered: 7th Jan 04
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12th Jan 08 at 18:28   View Garage View User's Profile U2U Member Reply With Quote
quote:
Originally posted by Dan295
the distributer works at camshaft speeed does it not, and this is half engine speed, so surely 3000rpm is 1500 pulses?


So the camshafts spin at half the speed of the rest of the engine?
ainsley_brader
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Registered: 24th Mar 02
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12th Jan 08 at 18:56   View User's Profile U2U Member Reply With Quote
yes because the cam pulleys are twice the size of the crank pulley

 
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