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ChadS
10-13-2004 07:54:47
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Re: head casting # in reply to Q Thompson, 10-12-2004 19:33:00
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8043 is the high compression gas head for the H, and super H, there was two versions of the 8043 cyl head, First was 8043D, which was used up unitl 52 when the Super H came out in 53, IH came out with the C-164, which all had 8043DD castings until late 54 and in 55 the 300 came out with the newest casting number, yet, the 8043DD and the 300 C-169(361479r) were identical. The differences are the following, 8043D (early version) had a slightly larger chamber, and is not compatible with fire crater pistons, in the compression chamber, on the later heads, they recasted the chamber design with a slight slant on one side, to allow more room for the fire craters to move, and to create a burn path for the crater design piston. the 8043D also has a difference in valve length. The intake runners are more closed VS the later cyl heads. The later heads, 8043DD and up, were identical, (gas heads, not LP) the intake runners are more open, less restricted, (when you look into the port, you can actually see down inside both valves) and are slightly larger in port size, not much,, maybe 1/8 inch bigger VS the older heads. They are fire crater piston friendly, and the highest compression gas head casting you could ask for. besides the LP head. Now,, you asked what to look for,, I got caught up in this few weeks back,, if you intend on pulling this tractor,, check the rules to see what is allowed as far as engine modifications,, some dont allow later model parts on older tractors, kinda keeps the stockers stock I guess. My opinion, if the rules let ya,, is the 8043DD which is found off the Super H C-164, with the proper machine work, can match the out put of the LP head. Hope this helps,, any questions? ChadS
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