Posted by pburchett on March 17, 2019 at 07:20:24 from (12.182.196.81):
1955 Ford 640 134 ci engine.
I started refreshing my dad’s old Ford tractor. I have owned it since 2004 and never had to do much to it except for maintenance. I redid the rear axle seals and bearings, hydraulic piston pump, lift cover, PTO, front axle pin/bushing, spindle bushings and repacked the front wheels plus I have been cleaning and scraping grease for a paint job later.
I have worked on both sides of the engine as I dreaded that portion. Since the clutch was on its last adjustment I split the tractor for inspection. I now need a clutch, pressure plate, main bearings, and rod bearings.
I now need help inspecting the pistons. They are stamped STD and do show some signs of wear but I do not know if they just need new rings or if I need new pistons, wrist pins, and sleeves. I have not taken any measurements yet.
Going on visuals what is the consensus of these pistons? I tried to take photos of the worst looking portions.
If I need new pistons I might as well replace the sleeves. If I replace the sleeves I will shrink them with the welder.
I found some piston kits on eBay “BUT” they are starting to rust so I don’t know if they are usable. I don’t mind cleaning rust to save some money but don’t want wrist pins that would give problems later or sleeves that I am unable to drive into the block as that would defeat the money savings. What are the thoughts on these?
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Today's Featured Article - Restoration Story: Fordson Major - by Anthony West. George bought his Fordson Major from a an implement sale about 18 years ago for 200.00 (UK). There is no known history regarding its origins or what service it had done, but the following work was undertaken alone to bring it up to show standard. From the engine number, it was found that this Major was produced late 1946. It was almost complete but had various parts that would definitely need replacing.
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