fourwheelhorseman 340 #1 Posted December 31, 2024 (edited) I have my k341 on my bench with rod and piston removed. All looks good. When I turn the engine over by hand with flywheel on it, it makes a knocking noise.. is this odd? It’s been a long time since I’ve been into a kohler engine.. especially this far. I removed the crankcase plate, flywheel and stator. Then replaced all when I decided I was going to rebuild it. Attached is the noise… it’s in correlation with the cam and valves. IMG_2924.mov IMG_2925.mov Edited December 31, 2024 by fourwheelhorseman Share this post Link to post Share on other sites
RED-Z06 2,266 #2 Posted December 31, 2024 Probably the lifters/valves running up and down the cam lobes 1 Share this post Link to post Share on other sites
gwest_ca-(File Mod) 11,121 #3 Posted December 31, 2024 Balance gears worn? 1 Share this post Link to post Share on other sites
fourwheelhorseman 340 #4 Posted December 31, 2024 1 hour ago, gwest_ca said: Balance gears worn? No Sir, they are completely out..those little devils are the reason I’m rebuilding this engine. Share this post Link to post Share on other sites
rmaynard 15,706 #5 Posted December 31, 2024 I'm thinkin that it is the lifter on the exhaust valve contacting the ACR. Remove the exhaust valve and lifter an see if it goes away. When running at normal speed it should go away. 1 Share this post Link to post Share on other sites
953 nut 56,091 #6 Posted December 31, 2024 If you were thinking of reassembling the engine without removing the cam, lifters, governor, and valves I would caution you against it. Little fragments of your rod or piston could ben lurking up there that will come back to ruin your work. Thoroughly clean and inspect everything before putting it back together. 1 Share this post Link to post Share on other sites
fourwheelhorseman 340 #7 Posted December 31, 2024 I do think it’s the cam/ valves/ACR making the noise. Thanks guys! 2 Share this post Link to post Share on other sites
fourwheelhorseman 340 #8 Posted December 31, 2024 24 minutes ago, 953 nut said: If you were thinking of reassembling the engine without removing the cam, lifters, governor, and valves I would caution you against it. Little fragments of your rod or piston could ben lurking up there that will come back to ruin your work. Thoroughly clean and inspect everything before putting it back together. Good sound advice! Thanks! 1 1 Share this post Link to post Share on other sites
fourwheelhorseman 340 #9 Posted Wednesday at 07:20 PM Well I took the crank cover off and cleaned the bearing, it had flecks of rod skirt in it. I also cleaned the other bearing on the opposite side. It had nothing.Now the crank spins perfectly free. I also inspected and cleaned the cam area and lifters.. I think it’s ready to be put back together, just waiting on rod, piston, rings and oil pan gasket. I’ll most likely plane the head while I’m waiting. 2 Share this post Link to post Share on other sites
