Firing order

Because, in the case of classic 1342:
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Which extrapolates easily to my 18436572 small block
Reply to
AMuzi
"Tom Del Rosso" wrote
The reason they don't just fire "one end to the other end" is balance.
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The reason the firing order isn't "consecutive" is due to the conventional way(s) of numbering cylinders. Straight 4 cyl = 1234 Straight 6 cyl = 123456 Some V8 = Left 1357 Right 2468 Other V8 = Left 5678 Right 1234
Feel free to build you own engine, and make it fire "consecutively" using normal numbering (have fun as your engine shakes the car to pieces), or get a felt pen and number your cylinders any way you like. :-)
Reply to
Sanity Clause
In theory you could make a cam and crank to do that but in practice the crank would be huge to restore any workable harmonic balance.
Reply to
AMuzi
It's simple. it's not possible to balance the crankshaft in most engines to do that and still have an engine that fit's into a vehicle. Take a simple 4 cylinder. The crank throws have to be 90 degrees off from each other to maintain balance. Then you need to balance out the rocking coupled frequency from the firing order. If you don't the vibration will quickly destroy the engine.
On a V engine you have 2 cylinders on each crank throw. So you have cylinders 1&2, 3&4, 5&6 each sharing a throw. Number one is at TDC but number two is already past TDC and heading down the bore by the time number one fires. Impossible to have them fire in sequence.
There are some engines out there that have a sequential firing order, but the crankshafts have split journals and generally they are not capable of much power output because of the crank design.
Reply to
Steve W.
One cylinder up to 16, 24 or more, engines fire on only one cylinder at a time. Most of them anyway. Batteries do not have electricity in them either
Reply to
allisellis851

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