[AT] Rationale for firing orders

[charlie hill]

Yep, Same firing order Larry just reversed.

Charlie
Original Message ----- 
From: "Larry D. Goss" <rlgoss at evansville.net>
To: "'Antique tractor email discussion group'"
<at at lists.antique-tractor.com>
Sent: Tuesday, March 23, 2004 11:08 PM
Subject: RE: [AT] Rationale for firing orders


> Are you sure the distributors both turned the same way?
>
> Just for kicks, I walked over to the book shelves across the room and
> pulled out the Reader's Digest Complete Car Care Manual and its
> supplement, and a couple editions of Chiltons.  Of all the makes and
> models on the road with a straight four at the time of printing, (1981,
> 1983, 1987) only the small engine in one of the Ford Fiesta cars of 1971
> had the firing order of 1-2-4-3.  All the rest, both domestic and
> imported had a firing order of 1-3-4-2.  There were lots of models where
> the distributor turned in different directions, so if you assume a
> clockwise rotation when it's really rotating counter-clock it will look
> like you have a different firing order.
>
> Larry
>
> -----Original Message-----
> From: at-bounces at lists.antique-tractor.com
> [mailto:at-bounces at lists.antique-tractor.com] On Behalf Of David Myers
> Sent: Tuesday, March 23, 2004 7:13 PM
> To: Antique tractor email discussion group
> Subject: RE: [AT] Rationale for firing orders
>
>
> --- "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
>
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