[AT] Rationale for firing orders

[David Myers]

--- "Larry D. Goss" <rlgoss at evansville.net> wrote:
> Dudley does a good job of describing what's going on
> in the engine, Rog.
> When it comes to 1-2-4-3 vs. 1-3-4-2 firing order, I
> remember being told
> by the professor in the Internal Combustion Engine
> course that used to
> be part of the mechanical engineering curriculum at
> Purdue, that
> designers tried to even out the stresses in the
> crank and camshaft by
> spacing the firing along the line of cylinders as
> far apart as possible.
> The firing order probably doesn't make much
> difference on an in-line
> four, but it does make a difference when you get
> into 6-, 8-, and larger
> engines.
> 
Larry, funny thing on the 4 cyl. firing order.  Early
Clark and Yale fork lift trucks both used Continental
F-163 engines.  One was 1-3-4-2 and the other was
1-2-4-3.  The engine turned the same direction, only
the distributor was changed to confuse the
weak-of-mind (namely me).  Now, even though one was a
Delco and the other a Prestolite, why the change?  Oh,
don't tell me it would only make matters worse. :-)
Dave Myers
Paw Paw, Michigan

__________________________________
Do you Yahoo!?
Yahoo! Finance Tax Center - File online. File on time.
http://taxes.yahoo.com/filing.html