Description
When your older Allis Chalmers is starting to burn oil, losing compression, or just not pulling like it used to, worn piston rings are often the culprit. You know the signs: blue smoke on startup, more frequent oil changes, and that gradual loss of power that creeps up on you. This complete 4-piston ring set gets your 138 or 149 cubic inch gas engine back to sealing properly and running with the authority these classic tractors are known for.
What You’re Getting
- Complete ring set for all four pistons with overbore sizing from 3-3/8 inches to 3-9/16 inches
- Proper ring configuration: one compression ring at 3/16 inch and three rings at 3/32 inch per cylinder
- TISCO quality construction designed to handle the heat cycles and pressures of gas engine operation
- Direct replacement for both 138 CID and 149 CID four-cylinder gas engines
Built for Classic Farm Work
This ring set fits the 4-cylinder gas engines found in many classic Allis Chalmers tractors, specifically the 138 CID and 149 CID engines that powered these reliable workhorses. These engines were the heart of tractors used for cultivating, plowing, and general farm work where dependable power mattered more than fancy features.
Made to Last
TISCO builds their piston rings to handle the harsh conditions inside engines – high compression ratios, constant heat cycling, and the contaminants that come with farm work. These rings are manufactured to maintain proper tension and sealing through thousands of operating hours.
Installation Notes
Ring installation requires engine disassembly and proper measuring tools to ensure correct fit. Check your cylinder bore for wear or scoring before installing new rings – sometimes cylinders need honing for proper ring seating. This is a perfect winter shop project when the tractor’s not needed for field work.
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