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Kohler K361 Bit The Dust


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#1 dacheez17 OFFLINE  

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Posted September 30, 2012 - 07:12 PM

Hello all my k361 in my 2418 has bit the dust. I can't seem to find a bolt in replacement for it. So I'm in a pickle I cab rebuild the motor already had head off and pinned the valve seat back in. Ran great after that then all of a sudden nada. Any ideas kinda just want to put new one in it and be done with all the problems with k361

#2 DH1 ONLINE  

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Posted September 30, 2012 - 07:32 PM

Sorry to hear of your troubles, maybe you can find another head for it or take the head to a machine shop see if they can fix it up for you.
If you decide to scrap the motor I'd be interested in buying the camshaft out of it.

#3 olcowhand ONLINE  

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Posted September 30, 2012 - 07:37 PM

Sorry to hear of your troubles, maybe you can find another head for it or take the head to a machine shop see if they can fix it up for you.
If you decide to scrap the motor I'd be interested in buying the camshaft out of it.


You meant to type "crankshaft" didn't you Doug?

#4 DH1 ONLINE  

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Posted September 30, 2012 - 07:41 PM

You meant to type "crankshaft" didn't you Doug?


No I mean CAMSHAFT 18hp Kohler OHV cam is suppose to give you 2 to 3 more HP in a 14 or 16 K series motor.
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#5 olcowhand ONLINE  

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Posted September 30, 2012 - 07:44 PM

No I mean CAMSHAFT 18hp Kohler OHV cam is suppose to give you 2 to 3 more HP in a 14 or 16 K series motor.


I am thinking the crank is the same as the 16hp K341 also.
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#6 DH1 ONLINE  

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Posted September 30, 2012 - 08:06 PM

I am thinking the crank is the same as the 16hp K341 also.


Just checked and your right- 14, 16, 18 engines all have the same stroke and even though the bore is different the weight of the rod/piston assembly is the same, that's why the same cranks are used in those 3 models.
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#7 DH1 ONLINE  

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Posted September 30, 2012 - 08:25 PM

Anyway back on topic, here's some info on valve seats in the OHV Kohler

http://gardentractor...m.htm#looseseat

#8 LilysDad ONLINE  

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Posted October 01, 2012 - 07:35 AM

Ran great after that then all of a sudden nada.


It will be interesting to see what NADA means. Did the seat got bad again..... or something more dramatic???

#9 dacheez17 OFFLINE  

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Posted October 01, 2012 - 01:46 PM

Nada is a relatively loose tern I suppose I should've clarified better. The seats are fine and haven't moved to my knowledge. Now I'm not getting any compression on motor and it spins over really fast when you crank it. A shot of ether will get a burp but that's it. I'm thinking new rings. Like I said before would like to just put a more reliable power plant in if I can.

#10 KennyP ONLINE  

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Posted October 03, 2012 - 08:11 AM

Could be a valve stuck open!

#11 LilysDad ONLINE  

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Posted October 03, 2012 - 02:15 PM

Yep! My thoughts.

#12 olcowhand ONLINE  

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Posted October 03, 2012 - 02:48 PM

The statement "turns over very fast" worries me the rod has tossed? They will spin like mad when the rod is disconnected! It might still cough just because enough starting fluid vapor got in the combustion chamber to get lit by the spark plug.

#13 KennyP ONLINE  

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Posted October 03, 2012 - 05:23 PM

Yeah, that's always a possibility, Daniel!

#14 farmer OFFLINE  

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Posted October 03, 2012 - 08:51 PM

I went and looked at a 1620 last summer and the man also had a 1618 he had repowered with a Kohler magnum 20 because the k361 gave him a lot of trouble. He said everything was a direct bolt on except he had to extend the frame and steering drag link 2" and trim the hood some. I want to do this when my k321 dies. He said his 1618 now has all the power it needs.

#15 LilysDad ONLINE  

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Posted October 04, 2012 - 07:57 AM

A what if thought..... Can a K361 be turned back into a flat head? I haven't seen a 361 with the head off.

Edited by LilysDad, October 04, 2012 - 07:58 AM.





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