if you are referring to my Mackinac Bridge post the M's with the detroits in the photos both have 2-71's. The 435 should have a 53 series. They are both 2 cycle diesels and should sound vary similar... Here is a video of our 2-71 warming up on Friday morning..
In the 40's and 50's GM (now Detroit Diesel) offered a retrofit kit for the Farmall M and a few other tractors (F20 being one). You got an engine with the proper bell housing, variable speed governor, flywheel adapter and I believe exhaust manifold. You also got a list of parts you needed to purchase or fabricate. I have a photocopy of the original instructions. The unrestored (at this time) M is my fathers.
Original retrofits are very rare. The Painted M in the photos is a fabricated installation from what I can tell. The bellhousing has been created and is not original from GM (Detroit Diesel). The adapter plate is welded onto the modified bellhousing. the adapter plate is also oversize and protrudes beyond the torque tube of the tractor.. Ours is a one piece cast / machined deal that fits the contour of the torque tube on the M and has the proper P/N as listed in the instructions.
I only know of 2 others (both fabricated) besides these two. The two in the photos I posted are the only two I have ever actually seen in person.
Peninsula Diesel did this installation originally on my father's M.
This post was edited by Rootsy at 09:21:42 09/21/09.
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