Re: Flat Head Farmalls

Posted by LenNH on February 02, 2009 at 08:35:07 from (71.235.191.159):

In Reply to: Re: Flat Head Farmalls posted by steelfronts on January 31, 2009 at 19:16:34:

Steelfronts is right. I looked in various sources and found a fuzzy picture of a WA-40, which DOES have a six-cylinder engine that from a distance looks like a flathead because it does not completely fill up the engine compartment--there is a good bit of space above the engine, probably because of a fairly short stroke for a tractor engine of that era (4.5", compared to the 6.5" of the WD-40, which would make for a taller engine). Also, the manifolds are on the right side, like most flatheads (this because of the traditional position of the camshaft on the right side of the engine, just below the valves). In Will and Markle's Farmall Regular and F-Series, there is a very good picture of a WA-40 seen from the left, and the o'head-valve configuration is obvious. I'll step out on a limb here, and look for comment from people who might know IH industrial engines from the late 30s and early 40s. From the outside, the 6-cylinder engine looks quite a bit like the International K-series truck engines starting with K-6. The obvious differences are the magneto and governor(both on the left side of the engine!). There is an oil filter quite low on the block, right behind the mag. I'm looking at IHC K-6 through K-11 truck brochures from the early 40s: the engines from K-8 through K-11 have a similar oil filter at that spot. The stroke on the truck engines up through K-10 is 4.5", just like the WA-40. The trucks also had the manifolds on the right and the plugs on the left, whereas most o'head-valve engines were the other way around. Were there good engineering reasons for this?
My guess is that the WA-40 engine is a variant of the truck engines, used for tractors and maybe industrial use. I briefly looked on the net for International Industrial Engines, but didn't get any hits on an engine like this from the late 30s.

Anybody out there who knows these engines, and can tell the rest of us whether there is anything to all this speculation based on pictures and brochures?

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