Description
When your older John Deere tractor starts burning oil, losing compression, or just doesn’t have the pull it used to, worn piston rings are usually the culprit. If you’ve got one of those classic 340 cubic inch six-cylinder gas engines, this ring set gets you back to proper compression and clean operation. There’s nothing quite like hearing that engine run smooth and strong again after a proper rebuild.
What You’re Getting
- Complete ring set with 3 compression rings at 3/32″ and 1 oil ring at 1/4″ per cylinder
- Precision-manufactured rings sized for 4-1/4″ bore to restore proper sealing
- TISCO quality construction built to handle the demands of agricultural work
- Direct replacement for original equipment – no modifications needed
Built for Real Farm Work
This ring set fits John Deere’s 340 CID 6-cylinder gas engines found in various models from the era when gas tractors handled most farm work. These engines powered through hay seasons, cultivation work, and general farm duties for decades. If you’ve got block numbers R33170, R43330, R40860, or R40870 with serial numbers up to 200999, this is your ring set.
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. Quality materials resist wear and maintain their spring tension even under the demanding conditions of agricultural work.
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 typically a winter shop project when you’ve got time to do it right. Take your time with measurements and cleanliness – these older engines deserve careful attention to run their best.
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