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Old 09-08-2002, 03:34 PM   #1
phoenix
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anybody know the firing order for a 2000 off the top of their head?
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Old 09-09-2002, 12:43 PM   #2
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does no one here have any clue of how the ignition system works and the order of fire? Ive got aftermarket coils and think i got the wires mixed up.
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Old 09-09-2002, 01:15 PM   #3
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If you mean which coil wire to which plug its 1-4-2-3
thats left side coil 1-4 and right side 2-3.
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Old 09-09-2002, 06:19 PM   #4
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no what i mean is in what order do the cylinders fire. i know one of the coils fires 1 and 4 and the other coil fires 2 and 3..what i need to know is what order it does this in. some motor fire in a 1,4,2,3 pattern some fire another way. just like a car motor the rotor goes around the distributer cap firing cylinders in a certain order. i dont see why this motor isnt alike. and im wondering the order since i bought aftermaket coils and want to make sure that i have them right.
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Old 09-10-2002, 12:21 PM   #5
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Cylinders 1 and 4 fire together. Cylinders 2 and 3 fire together. When no.1 is at TDC compression, no. 4 is on it's exaust stroke. It is the same deal for 2 and 3.

Hope that explains it a little better.
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Old 09-10-2002, 12:29 PM   #6
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First off, cylinders 1 and 4 do not fire together. If they did, #1 would not be at TDC compression while #4 was in its exhaust stroke.

I can't find the firing order anywhere. Sometimes the order is on the block. I don't have a block handy so I can't look there.

I'll try to find out from a few other sources...

Scott
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Old 09-10-2002, 12:53 PM   #7
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Do you know why you can't find the firing order?
Because 1 and 4 fire at the same time. 2 and 3 fire at the same time.

I don't have a manual in front of me, but I bet if you look at the valve adj. procedure you will see that if you bring no. 1 up to TDC compression that you can also check the clearance of the intakes for no. 4 . That is because when no. 1 is at TDC compression stroke, no. 4 is at TDC exaust.

Check your other sources, Scott. I'm betting they are going to tell you the same thing.

tom
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Old 09-10-2002, 01:18 PM   #8
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If cylinders 1 and 4 fired at the same time, they both would be at TDC in the compression stroke at exactly the same time. One would not be in the compression stroke and the other in the exhaust stroke.

Also, the bike would sound like a twin if cylinders 1 and 4 fired together and cylinders 2 and 3 fired together. It doesn't so they don't.

Now, on the pre-2002 R1's, since the spark plugs for 1 and 4 are on the same coil, the plugs fire at the time. But that does not mean the cylinders fire at the same time. Big difference!!!

Scott

Last edited by winders; 09-10-2002 at 01:20 PM.
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Old 09-10-2002, 01:32 PM   #9
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Duh!!!!

I just looked at the "Adjusting the Valve Clearance" section of the service manual. That shows the combustion cycle.

It is:

000 degrees - #1
180 degrees - #2
360 degrees - #4
540 degrees - #3

So, the firing order is 1, 2, 4, 3.

Scott
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Old 09-10-2002, 02:04 PM   #10
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I guess our terminoligy(sp?) is different. All I was trying to say was what you ended up putting in your last post.

1 and 4 PLUGS fire at the same time. The reason this can happen is because,as I said, 1 is at compression and 4 is at exaust.

That is why the combustion cycle of 4 is 360 degrees off of no. 1 .

There still is not a firing order like in a car with a distributor. A COMBUSTION order maybe, but a firing order no.

I think I'll go back to lurking, this is starting to be too much like work.
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Old 09-10-2002, 02:22 PM   #11
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Quote:
Originally posted by YamRZ350
There still is not a firing order like in a car with a distributor. A COMBUSTION order maybe, but a firing order no.
No, the standard terminology really is "firing order".

Industry standard terminology.....ask any engine designer the firing order of his engine and he will know exactly what you asking. I don't care if it a car engine or a motorcycle engine. I don't care if uses a distributor or not.

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Old 02-21-2003, 06:50 AM   #12
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Quote:
Originally posted by phoenix
does no one here have any clue of how the ignition system works and the order of fire? Ive got aftermarket coils and think i got the wires mixed up.
Hey, what coils are you using. I'm looking for some. Thanks.
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Old 02-21-2003, 07:41 AM   #13
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accel

they seem to work fine.

easy to wire, hard to find a place to mount them too in the area where the stock coils are.
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Old 02-21-2003, 09:57 AM   #14
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do they deliver a lot more voltage over stock?
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Old 02-21-2003, 10:08 AM   #15
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Explain further Scott please...

Not flaming, just curious. Not a motorcycle mechanic, but pretty familiar with the autos. How is 000 and 360 not the same? Same question with 180 and 540? Now, IMHO the difference would be that it takes two complete revolutions to complete the compression/exhaust cycle for each cylinder. Is that true? If so, can you explain how that is possible. I'm trying to picture in my head the cam shaft that would produce that effect.

Thanks,

Mike
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Old 02-21-2003, 10:14 AM   #16
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yup

also got 8.8mm wires with it which you can cut to any length
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Old 02-21-2003, 08:22 PM   #17
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Re: Explain further Scott please...

Quote:
Originally posted by mshumake
Not flaming, just curious. Not a motorcycle mechanic, but pretty familiar with the autos. How is 000 and 360 not the same? Same question with 180 and 540? Now, IMHO the difference would be that it takes two complete revolutions to complete the compression/exhaust cycle for each cylinder. Is that true? If so, can you explain how that is possible. I'm trying to picture in my head the cam shaft that would produce that effect.

Thanks,
As far as the crankshaft is concerned, 0 and 360 degrees are the same. And so are 180 and 540.

But the cams spin at half the speed of the crank so it takes 720 degrees of cranks rotation to match 360 degrees of camshaft rotation.

Does that make it clear?

Scott
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Old 02-21-2003, 09:15 PM   #18
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Clear as....

a glass house! Thanks.

Mike
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Old 02-21-2003, 09:59 PM   #19
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The 4 stroke has 4 strokes ie piston goes up down up down and crank turns twice for each power stroke. Suck squeeze bang blow is the easiest way to remember it ie intake compression power and exhaust strokes.
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