anyone help me with the firing order on my 72 honda chop .
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firing order
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 chopdown72 |
firing order |
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Posts: 25 (04/24/08 12:55 PM) |
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streetracer75 |
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Posts: 2211 (04/24/08 1:12 PM) |
as you are siting on the bike from left to right, 1 2 3 4.
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chopdown72 |
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Posts: 26 (04/24/08 1:17 PM) |
wow thats easy enough thanks
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74rat |
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Posts: 4398 (04/24/08 1:29 PM) |
Negative..thats not the "firing order"...cant remember it off hand right now, but either way, its not 1.2.3.4
when in doubt..knock`um out...H.C.C.M.F LOCAL 6978 Flint Michigan..3rd most dangerous city in the USA..come back and visit us..sorry we "missed" you the first time..LOL |
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74rat |
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Posts: 4399 (04/24/08 1:33 PM) |
chopdown..not sure why your askin...but the two center cylinders run off the same coil, and the two outside cylinders run off the other coil...
the outside cylinders are 1 and 4, 1 being on the shifter side, 4 being on the brake side... and the two inside cylinders are 2 and 3,...2 being second from left (shifter side) and 3 being second from right (brake side).. thats just the number order of the cylinders..NOT the firing order.. 74rat when in doubt..knock`um out...H.C.C.M.F LOCAL 6978 Flint Michigan..3rd most dangerous city in the USA..come back and visit us..sorry we "missed" you the first time..LOL |
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streetracer75 |
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Posts: 2212 (04/24/08 1:41 PM) |
well every time someone ask me what the fireing order is on something i think they want to know wich cylinder is wich.
and asumeing that he has stock coils they are marked 1 thrue 4 so if he sits on the bike starting with the first cylinder on the left is one. thank you and good night |
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chopdown72 |
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Posts: 27 (04/24/08 2:32 PM) |
lol thanks
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 Houndog750 |
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Posts: 1745 (04/24/08 2:35 PM) |
1 2 4 3
It was Honda first, all through the middle, and if I have my way, till the end as well.
Most people say what they'll do. Very few actually do what they say. |
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the750sergeant |
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Posts: 1056 (04/24/08 6:39 PM) Senior Member |
ok, so this is a simple question for any one that has taken the head off the top of the engine........the two outside pistons move at the same time with each
other.....the two inside pistons move at the same time opposite the outside......."now"........if you look at your points plate you will see that the
points fire at the same time for 1and 4 and opposite for 2 and 3....so you would think the firing order was 1-4 and then 2-3...back and forth like
that......."but"........"nope"......... if you really dig deep, take out your plugs to watch the rise and fall of the pistons....remove the
valve cover to watch the movement of the valves.....you will see that the firing order is not...."why" because if you watch your point as the engine
is turned over slow you will see that the spark plugs fire during the "compression and exhaust" phase........."Why"...........because its
just easier in the design of the engine, you have 4 cylinders and only two sets of point!
The Winner is.................................................................Houndog 1 2 4 3 To be honest........I never really thougt about it, just not a big deal......get a cb750 shop manual and you will be fine and yes...your coils are working twice as hard
You can't "Chop" when you keep adding crap...
Last Edited By: the750sergeant
04/25/08 6:03 PM.
Edited 2 times.
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