[Farmall] 340 manifold cross-fit?

Stan Bass headlight at erols.com
Thu Mar 16 20:31:54 PST 2006


I would question that ebay manifold listing. First, the 200 shouldn't be
in the set, and the 3xx/4xx tractors might be wishful thinking,
depending on if they made some mods to fit the differences?

1- The A/B/C through the 100/200 tractors used the same manifold. It's
the older, squared-off manifold with a beefy looking center section that
connects the intake and exhaust  parts just above the carb. 

2- The 130/230 to 140/240 tractors got a new manifold. It has larger ID
runners, larger ports, larger radius to the bends in the runners and
just three ribs in the center section connecting the intake to the
exhaust parts. The carb mounts higher (or lower can't remember) which
also changes the design of the air cleaner (the opening to the carb is
at a diff height relative to the air cleaner mounting bolts). I think
the carb to air cleaner OD increased from 1-1/2" to 1-5/8" here also?

3- The 330/340 tractors use a manifold similar to the x30/x40, except
the carb mounting-stud spacing. On all the earlier tractors it is
~2-3/8" while on the C135 tractors it is ~2-11/16". Didn't think to
check it but I'm sure the carb (and the manifold) should have a larger
throat as well.
 
2A/3A- The 240/330/340 Utilities had a variant with a flange on the top
that would allow the down-turned exhaust option, but this manifold (at
least the ones I have seen) also are also threaded for the standard
1-1/2" NPT pipe used on the row-crops.

Bottom line is that (AFAIK) any of these manifolds will bolt to any head
(meaning the 6 bolt head to manifold pattern and spacing stayed the
same) in the A/B/C C-113 all the way to the 404/444/504 C-135/C-153
motors, but the carb and air cleaner (and sometimes exhaust) combo's are
specific to the family (the 504 is a whole 'nother story).

Before you buy a manifold listed to fit everything in the universe you
might want to ask the seller some questions ;)
Stan(VA).


farmall-bounces at lists.antique-tractor.com wrote:
> 
> My manifold cracked at the exhaust flange and I need a replacement. I see an online
> retailer has a manifold that *supposedly* fits IH models 130, 140, 200, 230, 240, 330,
> 340, 404, 424, 444, 2404, 2424, 2444, and T-4, T-5, T340, 500 dozers. If the smaller
> engine tractors work - would one for an A, B or C work as well or is all this info
> incorrect?
>



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