Posted: 9/22/2014 7:02:20 AM EDT
| How crucial is to engine performance? |
| A lot. It takes times for a flame front to propagate, too early, you lose power and the engine fights against increasing pressure from the hot gas expansion which is hard on the engine, too late and you lose efficiency and power. Just right and you gain both power and efficiency. |
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Hey, man, there are plenty of retards out there living kick-ass lives! My ex wife is a retard. She's a pilot now. Quoted:
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OP, your thread is retarded. Hey, man, there are plenty of retards out there living kick-ass lives! My ex wife is a retard. She's a pilot now. Well, maybe this thread can get a part-time job flying commuters in addition to delivering pizzas 
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Im not a mechanicm Quoted:
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OP, your thread is retarded. Im not a mechanicm It's a joke, man. "Retarded" is when the engine timing is -TDC, and the term "Advanced" is when the timing is +TDC. Timing is generally measured in "degrees" in relation to TDC (Top Dead Center). The old way of advancing or retarding the timing was to loosen the bracket and physically turning the distributor left or right. You'd use a timing light on a reference tab against a hash mark on the pully on the crankshaft of the engine. |
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Hey, man, there are plenty of retards out there living kick-ass lives! My ex wife is a retard. She's a pilot now. Quoted:
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OP, your thread is retarded. Hey, man, there are plenty of retards out there living kick-ass lives! My ex wife is a retard. She's a pilot now. Truth. I hear some make a living as security guards and such too |
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It's a joke, man. "Retarded" is when the engine timing is -TDC, and the term "Advanced" is when the timing is +TDC. Timing is generally measured in "degrees" in relation to TDC (Top Dead Center). The old way of advancing or retarding the timing was to loosen the bracket and physically turning the distributor left or right. You'd use a timing light on a reference tab against a hash mark on the pully on the crankshaft of the engine. Quoted:
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OP, your thread is retarded. Im not a mechanicm It's a joke, man. "Retarded" is when the engine timing is -TDC, and the term "Advanced" is when the timing is +TDC. Timing is generally measured in "degrees" in relation to TDC (Top Dead Center). The old way of advancing or retarding the timing was to loosen the bracket and physically turning the distributor left or right. You'd use a timing light on a reference tab against a hash mark on the pully on the crankshaft of the engine. You also had to adjust the vacuum advance and mechanical advance too. |
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It's a joke, man. "Retarded" is when the engine timing is -TDC, and the term "Advanced" is when the timing is +TDC. Timing is generally measured in "degrees" in relation to TDC (Top Dead Center). The old way of advancing or retarding the timing was to loosen the bracket and physically turning the distributor left or right. You'd use a timing light on a reference tab against a hash mark on the pully on the crankshaft of the engine. Quoted:
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OP, your thread is retarded. Im not a mechanicm It's a joke, man. "Retarded" is when the engine timing is -TDC, and the term "Advanced" is when the timing is +TDC. Timing is generally measured in "degrees" in relation to TDC (Top Dead Center). The old way of advancing or retarding the timing was to loosen the bracket and physically turning the distributor left or right. You'd use a timing light on a reference tab against a hash mark on the pully on the crankshaft of the engine. I was looking for that "woosh.jpg" and you beat me to it 
ETA: I am not a mechanic, but a pretty good parts changer. 
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Remember on older engines where the ignition timing is not controlled totally by an ECM you can set base timing as well as the total advance, where that comes in at and the relative curve.
Base timing - Set at idle using a timing light and reference on the crankshaft Total Advance - Base timing plus the amount the distributor allows timing to advance. (some ignition modules assist advance and can be swapped out as well as mechanical stops on the dist.) Curve - timing advance for a given RPM. Usually set using different weights/springs on the distributors advance mechanism |
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Truth. I hear some make a living as security guards and such too Quoted:
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OP, your thread is retarded. Hey, man, there are plenty of retards out there living kick-ass lives! My ex wife is a retard. She's a pilot now. Truth. I hear some make a living as security guards and such too Aww look, somebody wants attention 
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I was looking for that "woosh.jpg" and you beat me to it
ETA: I am not a mechanic, but a pretty good parts changer. Quoted:
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OP, your thread is retarded. Im not a mechanicm It's a joke, man. "Retarded" is when the engine timing is -TDC, and the term "Advanced" is when the timing is +TDC. Timing is generally measured in "degrees" in relation to TDC (Top Dead Center). The old way of advancing or retarding the timing was to loosen the bracket and physically turning the distributor left or right. You'd use a timing light on a reference tab against a hash mark on the pully on the crankshaft of the engine. I was looking for that "woosh.jpg" and you beat me to it
ETA: I am not a mechanic, but a pretty good parts changer. Let's not dwell on the subject... |
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Let's not dwell on the subject... http://www.theyeshivaworld.com/wp-content/uploads/2010/10/chimp-220x300.jpg That was at least a little bit funny
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You also had to adjust the vacuum advance and mechanical advance too. Quoted:
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OP, your thread is retarded. Im not a mechanicm It's a joke, man. "Retarded" is when the engine timing is -TDC, and the term "Advanced" is when the timing is +TDC. Timing is generally measured in "degrees" in relation to TDC (Top Dead Center). The old way of advancing or retarding the timing was to loosen the bracket and physically turning the distributor left or right. You'd use a timing light on a reference tab against a hash mark on the pully on the crankshaft of the engine. You also had to adjust the vacuum advance and mechanical advance too. Not on any distributer I ever saw. They either worked, or they didn't. Also, the vacuum "advance" actually retards the timing. Not sure why the called it "vacuum advance". |
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It's a joke, man. "Retarded" is when the engine timing is -TDC, and the term "Advanced" is when the timing is +TDC. Timing is generally measured in "degrees" in relation to TDC (Top Dead Center). The old way of advancing or retarding the timing was to loosen the bracket and physically turning the distributor left or right. You'd use a timing light on a reference tab against a hash mark on the pully on the crankshaft of the engine. Quoted:
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OP, your thread is retarded. Im not a mechanicm It's a joke, man. "Retarded" is when the engine timing is -TDC, and the term "Advanced" is when the timing is +TDC. Timing is generally measured in "degrees" in relation to TDC (Top Dead Center). The old way of advancing or retarding the timing was to loosen the bracket and physically turning the distributor left or right. You'd use a timing light on a reference tab against a hash mark on the pully on the crankshaft of the engine. Ahhhh gotcha lol |
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Not on any distributer I ever saw. They either worked, or they didn't. Also, the vacuum "advance" actually retards the timing. Not sure why the called it "vacuum advance". Quoted:
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OP, your thread is retarded. Im not a mechanicm It's a joke, man. "Retarded" is when the engine timing is -TDC, and the term "Advanced" is when the timing is +TDC. Timing is generally measured in "degrees" in relation to TDC (Top Dead Center). The old way of advancing or retarding the timing was to loosen the bracket and physically turning the distributor left or right. You'd use a timing light on a reference tab against a hash mark on the pully on the crankshaft of the engine. You also had to adjust the vacuum advance and mechanical advance too. Not on any distributer I ever saw. They either worked, or they didn't. Also, the vacuum "advance" actually retards the timing. Not sure why the called it "vacuum advance". When you step on the go pedal vacuum pressure drops so the timing advances. |
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When you step on the go pedal vacuum pressure drops so the timing advances. Quoted:
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You also had to adjust the vacuum advance and mechanical advance too. Not on any distributer I ever saw. They either worked, or they didn't. Also, the vacuum "advance" actually retards the timing. Not sure why the called it "vacuum advance". When you step on the go pedal vacuum pressure drops so the timing advances. Half right. The vacuum drops, which RETARDS the timing. Now that you mention it, though, the application of vacuum does in fact advance the timing, hence the name. |
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pretty fucking crucial This 14 er got it right . You need to be perfect or within a degree . Detonation is no joke and will break expensive spinning parts called pistons . Not enough timing and no power . too much detonation , a lot of factors come into play the biggest being combustion chamber shape , piston top shape , plug location and where you cat is when the engine is built . |
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This 14 er got it right . You need to be perfect or within a degree . Detonation is no joke and will break expensive spinning parts called pistons . Not enough timing and no power . too much detonation , a lot of factors come into play the biggest being combustion chamber shape , piston top shape , plug location and where you cat is when the engine is built . Quoted:
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pretty fucking crucial This 14 er got it right . You need to be perfect or within a degree . Detonation is no joke and will break expensive spinning parts called pistons . Not enough timing and no power . too much detonation , a lot of factors come into play the biggest being combustion chamber shape , piston top shape , plug location and where you cat is when the engine is built .  I figured laying it out plain and simple was the way to go, if he is asking "how crucial proper timing on an engine is" he probably will not understand to much of the tech talk. No offense OP
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This 14 er got it right . You need to be perfect or within a degree . Detonation is no joke and will break expensive spinning parts called pistons . Not enough timing and no power . too much detonation , a lot of factors come into play the biggest being combustion chamber shape , piston top shape , plug location and where you cat is when the engine is built . Quoted:
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pretty fucking crucial This 14 er got it right . You need to be perfect or within a degree . Detonation is no joke and will break expensive spinning parts called pistons . Not enough timing and no power . too much detonation , a lot of factors come into play the biggest being combustion chamber shape , piston top shape , plug location and where you cat is when the engine is built . Um... pistons don't spin. Just sayin...
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