Firing order
 

This always bugged me. Why is firing order always non-consecutive?


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Firing order
 

On 1/4/2018 7:33 PM, Tom Del Rosso wrote:
> This always bugged me. Why is firing order always non-consecutive?
>
>

Because, in the case of classic 1342:
https://www.youtube.com/watch?v=M1h9eU9YH5o

Which extrapolates easily to my 18436572 small block

--
Andrew Muzi
<www.yellowjersey.org/>
Open every day since 1 April, 1971

Firing order
 

AMuzi wrote:
> On 1/4/2018 7:33 PM, Tom Del Rosso wrote:
>> This always bugged me. Why is firing order always non-consecutive?
>>
>>
>
> Because, in the case of classic 1342:
> https://www.youtube.com/watch?v=M1h9eU9YH5o
>
> Which extrapolates easily to my 18436572 small block

That doesn't explain why it isn't 1234.

Firing order
 

"Tom Del Rosso" wrote

> >> This always bugged me. Why is firing order always non-consecutive?
> >>
> >
> > Because, in the case of classic 1342:
> > https://www.youtube.com/watch?v=M1h9eU9YH5o
> >
>
> That doesn't explain why it isn't 1234.

The reason they don't just fire "one end to the other end" is balance.
https://en.wikipedia.org/wiki/Engine_balance

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. :-)

Firing order
 

Tom Del Rosso wrote:
> This always bugged me. Why is firing order always non-consecutive?
>
http://what-when-how.com/automobile/...rs-automobile/

Firing order
 

On 1/4/2018 10:20 PM, Tom Del Rosso wrote:
> AMuzi wrote:
>> On 1/4/2018 7:33 PM, Tom Del Rosso wrote:
>>> This always bugged me. Why is firing order always non-consecutive?
>>>
>>>
>>
>> Because, in the case of classic 1342:
>> https://www.youtube.com/watch?v=M1h9eU9YH5o
>>
>> Which extrapolates easily to my 18436572 small block
>
> That doesn't explain why it isn't 1234.
>
>
>

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.

--
Andrew Muzi
<www.yellowjersey.org/>
Open every day since 1 April, 1971

Firing order
 

AMuzi wrote:
> On 1/4/2018 10:20 PM, Tom Del Rosso wrote:
>> AMuzi wrote:
>>> On 1/4/2018 7:33 PM, Tom Del Rosso wrote:
>>>> This always bugged me. Why is firing order always non-consecutive?
>>>>
>>>>
>>>
>>> Because, in the case of classic 1342:
>>> https://www.youtube.com/watch?v=M1h9eU9YH5o
>>>
>>> Which extrapolates easily to my 18436572 small block
>>
>> That doesn't explain why it isn't 1234.
>>
>>
>>
>
> 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.

I don't see why, but thank you to all. I have to read up and think
about this.

Firing order
 

On Thursday, January 4, 2018 at 7:33:08 PM UTC-6, Tom Del Rosso wrote:
> This always bugged me. Why is firing order always non-consecutive?
>
>
> --

That helps balance the engine. Otherwise the engine would act crazy, might not be firing right too.

Firing order
 

On 5/01/2018 12:33 PM, Tom Del Rosso wrote:
> This always bugged me. Why is firing order always non-consecutive?
>
>
Relies on the crankshaft: flatplane or crossplane
And control of engine balance.

--

Xeno

Firing order
 

On 5/01/2018 3:20 PM, Tom Del Rosso wrote:
> AMuzi wrote:
>> On 1/4/2018 7:33 PM, Tom Del Rosso wrote:
>>> This always bugged me. Why is firing order always non-consecutive?
>>>
>>>
>>
>> Because, in the case of classic 1342:
>> https://www.youtube.com/watch?v=M1h9eU9YH5o
>>
>> Which extrapolates easily to my 18436572 small block
>
> That doesn't explain why it isn't 1234.
>
>
>
It does, if you care to look. Some thinking is required.



--

Xeno