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Old 09-22-2022, 04:04 AM
SuzukiT350man SuzukiT350man is offline
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Join Date: Oct 2021
Location: Alabama
Posts: 53
Default Kohler K341 (16 hp) mods?

I’m going to be rebuilding a 16 hp kohler and I want to have a little more get-up-and-go power but not excessive. I’ve heard also that these flathead kohlers won’t tolerate any RPM above 3600, but it’s doable with the right configuration. I plan on (so far) boring it 0.20” over, shave the head 0.0040”, and use ISaveTractors rebuild kit. I’d like it to run a tad over 4000 RPM so the mower deck blades will spin a little faster as well, but not compromise engine reliability and wear. I’ve seen tractor pullers run a modified kohler k series many years in a row capable of 6-7k rpm so I know it isn’t impossible.

Like i said i don’t want to go overboard on modifying it, and nor do I want to send a connecting rod to the mesosphere. I would probably start out with some heavier valve springs and a thinner head gasket for a tad more compression along with the shaved head, a modern magneto kit for shorter ignition delay, and most likely re-jet the carb. The carb came off a K321 but the parts catalog says they have the same size carb but different jet sizes.

So anyone out there that has built a K-Series and knows a couple tricks let me know. I’ve built modern honda and briggs engines but never anything close to this before. It came off of a 169 and I plan on repainting most of the body and frame that’s in bad shape while I have the engine off. Thanks for reading my late night project planning, i’m looking forward to giving progress updates
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Cub Cadet is a premium line of outdoor power equipment, established in 1961 as part of International Harvester. During the 1960s, IH initiated an entirely new line of lawn and garden equipment aimed at the owners rural homes with large yards and private gardens. There were a wide variety of Cub Cadet branded and after-market attachments available; including mowers, blades, snow blowers, front loaders, plows, carts, etc. Cub Cadet advertising at that time harped on their thorough testing by "boys - acknowledged by many as the world's worst destructive force!". Cub Cadets became known for their dependability and rugged construction.

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