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No, a half turn. Remember that the rotor scribes an arc of 360 degrees ( or 2pi using the polar coordinate system). You want half that arc length, or 180 degrees ( or pi long, however you wish to mathematically represent it in your mind)
whoah
you guys are getting into things I dont quite understand. My brother knows how to time cars. All he did was line up the harmonic balencer point up with the 3rd tooth. Then he stuck my new dist. in, which didnt work. We are going to put my old one back in that we know was working. If that doesnt work then we are going to have one of his friends come over. What do you mean having the timing off 360 degrees. You mean completely backwords? Please explain more cutty, this is turning into a nightmere, I have to drive my dads pile of sh*t ford today to school. Hes giving me this huge lecture on what not to do on car on and on how they do so much for me, im 22 almost have my degree I dont need to hear this sh*t.
you guys are getting into things I dont quite understand. My brother knows how to time cars. All he did was line up the harmonic balencer point up with the 3rd tooth. Then he stuck my new dist. in, which didnt work. We are going to put my old one back in that we know was working. If that doesnt work then we are going to have one of his friends come over. What do you mean having the timing off 360 degrees. You mean completely backwords? Please explain more cutty, this is turning into a nightmere, I have to drive my dads pile of sh*t ford today to school. Hes giving me this huge lecture on what not to do on car on and on how they do so much for me, im 22 almost have my degree I dont need to hear this sh*t.
Like I said earlier, was it on a compression stroke? Take out the #1 cylinder spark plug and put your finger over the hole. Have someone turn over the engine by hand and when you feel pressure put a screw driver into the hole and watch the timing marks. when it tops out, drop in your distributor and it should be aiming at #1 cylinder.
Being out 360 degrees I believe it would be at #4 cylinder. Do what I said above and you should be all set. If it doesn't work then you have other problems, wiring, bad distributor and such. Also did you leave any vacuum lines disconnected?
Being out 360 degrees I believe it would be at #4 cylinder. Do what I said above and you should be all set. If it doesn't work then you have other problems, wiring, bad distributor and such. Also did you leave any vacuum lines disconnected?
how do you break a dist? are you working with a hei dist? if you are and you want to check it for fire,all you have to do is before you install it hook a power wire to the cap were it says batt an hook up a ground to the metal part of the dist housing.now all you have to do is spin it! a word to the wise don't hold the dist by the cap because if it's working it will knock your d**k in the dirt... let me know what you find...jesse
No, you can never be off 360 degrees, but you can be off by an amount less than that. Remember, a circle is an arc of 360 degrees in length. Or, there are 360 degrees in a circle. You are off 180 degrees, or half a circle. In an Otto cycle (4 stroke) engine, the piston is at TDC (Top Dead Center) 2 times during each cycle, only one of which is used for producing power. If it were a 2 stroke, it would be on the power stroke every time the piston was at TDC. 2 strokes are not relevant to passenger cars though, unless you have an old Saab, Trabant, or Wartburg-so I will skip the dissertation on how they work. Anyhow, in a 4 stroke engine, if you are 180 degrees out, the ignition is not firing on the power stroke, but on the intake stroke when the intake valve is open to let the new charge enter the chamber, and the piston is on it's down stroke. Basically, the 4 stroke cycle goes like this: Intake ( intake valve open, piston traveling down), Compression ( both valves closed piston traveling upwards), Ignition/power ( piston at TDC, spark plug fires and sends piston downwards), Exhaust ( piston travels up from the bottom, exhaust valve open, and the pressure forces the spent gases out the exhaust port), then it repeats itself. If it is timed to fire at the wrong part of the cycle, it will not produce power since the engine relies on thermal expansion in order to move the piston downwards in a closed cylinder. Remember: the distributor is timed off the camshaft, not the crank. The cam is driven at a 2:1 gear reduction, so it only goes 360 degrees while the crank turns 720 degrees. This is why the cam sprocket/gear has twice the circumference and tooth count as the crank sprocket/gear in a timing set. This is also why the timing mark on the balancer can line up, but the valves will be in the wrong position to make power.
There is an animation here of how it works if you did not understand my explanation. It will make it all crystal clear as to what I mean.
http://en.wikipedia.org/wiki/Four-stroke_engine
There is an animation here of how it works if you did not understand my explanation. It will make it all crystal clear as to what I mean.
http://en.wikipedia.org/wiki/Four-stroke_engine
I think an easier way to say all that is that your cam turns twice to your cranks once. With your timing mark lined up, you can turn your motor around once, back to where your timeing mark is lined up again and your cam will be in a completely opposite position.
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