K241 drop in fit to an Original?
 

Hello expert CC folk. Been a while since I've needed some support. My Original mows the lake property every year. Sadly, last Sept one of my last mows, the engine seized. It will not move.

Now, I could and should tear down and rebuild with a new piston, rings, hone, etc, but I didn't have time until now. Not sure what seized. It had good fresh oil in, but I was cutting a high bermuda run.

Yesterday, a K241 10HP in good compression fell in my lap for $75. It comes complete with the starter/gen, wiring, carb, pulleys, muff, even air cleaner. The kid selling it said it was on the shelf in his dad's garage for ages. He thinks it came out of a 107?

Anyway, I grabbed it up. Now, of course we get to the nuts of the matter. Is this a drop in replace of my 7HP Original engine? My SN is around 18,000 don't know the exact number. Any help is much appreciated. Belt pulley size? Wiring change? Bolt flange?

I'll be mowing this spring again, and want to keep the Original out there earning its keep. :beerchug:

Anyone? Is this thing on?

Yes, it's on. Not everyone has experience with Originals, let alone engine swapping one.
Be patient, someone will opine.

First off, The engine pan is wrong, altogether different.
The 241 oil pan hangs down between the frame rails whereas the original sits on top of the frame proper and has a flat bottom.

Perhaps I should provide a picture of my K241. Seems to me the bottom of the engine is flat, and the four mounting holes are right in the bottom of the crankcase. I'll go take a pic later and might help.

The two frames are completely different as well.
The original frame is one solid stamped & bent unit.
You may be able to swap the pans around, yiu will have to compare the bolt spacings on the block.

The bolt pattern is the same, but you will have to remove the bolts on the frame. Try sitting the K241 on the frame an see how it fits with the tank on it, you can see what you will have to do.

Thanks, this is what I was hoping for. I didn't get the tank with it, but I can move my tank over easy. Looks like I will need points, the points cover is missing and the points are bent. Carb has dobber nest in it, so that needs cleaning. I'll mess with it next week I think.

Sounds like a lot of extra work to shoehorn in a different motor that you don't know how well it runs. I'd rebuild the original motor and be done with it for another 50 years.:TwoCents:

I agree with Oak. Do it once and done.

Dittos on that!!

That K241 is kinda sorry looking at first glance.... I with the others doing proper rebuild on your original motor.

Whelp, if it's gonna be a 50 hour job to convert, I woulda rebuilt mine. I got the engine for almost nothing, and it was only 13 miles away. The labor to R&R the engine is basically the same to rebuilt or swap in this, so if I can put a 10HP in there, and it will run(it has compression), then my R&R time just got more valuable.

Suppose my crank is trash? Suppose my cyl is damaged? Suppose my cam is flattened? Everything is relative, so I ask; "is it a drop-in repl"?

Right now, it's looking like there are very few mods/upgrades/changes to get the 10HP pushing, and I have less to worry about this summer when the grass gets high again. It was working pretty hard with just the 7.

It seems to me that no matter what route you choose to go,
the first step involved is removal of the seized engine from the tractor.

So why wouldn't you take that first step, and then you can place the two engines
side by side and the answer to your question will be right in front of you.

Suppose my crank is trash? Suppose my cyl is damaged? Suppose my cam is flattened? Everything is relative, so I ask; "is it a drop-in repl"?



Guess you won't know until you dismantle it.

I would remove the old and clean the carb, new points, plug, and condenser. What ever else needs done to the K241 to get it running. Stick it on the "O" The wiring to the motor is the same as the 8hp

I pulled the K161 from the Original. The engine mounts are the same pattern.

And, I come here for assistance just any other CC owner. In a few weeks, I'll be able to answer the question; 'K241 drop in fit to Original', and what is needed.