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  #1  
Old 06-07-2019, 09:49 PM
rsshallop rsshallop is offline
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Default Putting the K241 back together

Hello friends, I want to start a thread to cover the many questions I will have about putting my Kohler K241 Engine back together. I got it back yesterday from the machinist, who completed the cylinder boring .10 over, valve seat reconditioning and installation of new valve guides. He really took a lot of care to insured that the cylinder bore and valve guides would be right for the new piston and valves, which he asked to have on hand for the work. He also cleaned up the surface that the head gasket sits on and also pointed out that the intake flange for the carburetor was not as smooth as it should be and that I should use a sealant with the gasket when I attach the carb back on. Anyway, the first question I have is about painting the engine fins. I have read that a lot of people think that it is not a good idea to paint them, but man are they rusty. I really think they need something. I planned on using Rust Check Rust Converter to prep the fins and then a good quality flat black heat paint spray bomb to finish it off. Input would be appreciated.
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Old 06-07-2019, 10:23 PM
finsruskw finsruskw is offline
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Did they not tank the block before the machine work?
They should have been clean if they did.
I would not paint the fins or the head if it is going to be put into normal use.
A trailer queen, maybe but not a worker.
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Old 06-07-2019, 10:44 PM
rsshallop rsshallop is offline
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It was thoroughly cleaned. Also, I should have clarified that I am only going to paint the fins on the cylinder jug with flat black heat paint, not the head. Oh yeah, it is definitely going to be a worker.
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Old 07-13-2019, 08:21 PM
rsshallop rsshallop is offline
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OK, I'm making a little progress and this is the first time around doing a rebuild. If anyone sees anything wrong in these pictures from today, please point it out to me. First, pressed in the main bearing into the block and then got the governor shaft in place.
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Old 07-13-2019, 08:26 PM
rsshallop rsshallop is offline
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Next, got the governor gear on the governor gear shaft with the spacer in place.
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Old 07-13-2019, 08:30 PM
rsshallop rsshallop is offline
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Next, hand tightened up the governor bushing nut and used two taps with an impact driver to tighten the holding screw.
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Old 07-13-2019, 08:37 PM
rsshallop rsshallop is offline
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Next, put the tappets in back in place. Then, put the camshaft back into place. The end play on the camshaft was at .011 of an inch with one spacer (not the same as pictured) at the bearing plate side. I added one extra spacer at the other end and that brought the end play down to .005.
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Old 07-13-2019, 08:41 PM
rsshallop rsshallop is offline
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hopefully, I will get onto the crankshaft soon...
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Old 07-14-2019, 09:59 AM
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DeltaCub DeltaCub is offline
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The block and internals look nice and clean. Please make sure to thoroughly lubricate all the moving parts prior/during assembly. Engine oil will be fine. Since the engine is splash lubed and not pressure lubed, use engine oil....NOT grease. Parts such as governor shaft/gear, camshaft pin and tappets need lubricating during assembly. Also lube the piston/rings/wrist pin and connecting rod at wrist pin and crankshaft and valve stems. Make sure the cylinder wall is clean then lubricate the wall. Good luck and have fun.
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Old 07-14-2019, 01:34 PM
rsshallop rsshallop is offline
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Thank you DeltaCub, So far I have been using 3in1 multi-pupose oil on the parts put together so far. However, I'll go over them again some with non-detergent 30w oil and continue on using that. The main bearing is new and packed with grease. I'll add oil to it also.
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