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K-121 Kohler..


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#16 olcowhand OFFLINE  

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Posted March 01, 2013 - 03:21 PM

I got her apart and it's in rough shape, but maybe I can save it. I will post some pictures later. The crankcase had water in it and the bore is pretty rough.

 

You can save it no matter what.  Sleeve it, grind the crank, new seats....all can be redone.  Just bust out some of that rusty money & get it done!



#17 Texas Deere and Horse OFFLINE  

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Posted March 01, 2013 - 03:25 PM

The problem is so far I haven't found any cross over to any other K-series engines. I was hoping that this used parts from a couple other engine to build this special order engine.



#18 Texas Deere and Horse OFFLINE  

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Posted March 01, 2013 - 05:09 PM

Well, I've broke 2 out of 3 rings trying to free them up on the piston. Now to find any brand engine that has a 2.625" Bore and uses .0935" rings. :wallbanging:



#19 olcowhand OFFLINE  

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Posted March 01, 2013 - 07:44 PM

Brian, 3/32 = .0938.  Did you measure a ring, or the land.  If you measured the ring, then chances are it's a 3/32" ring.  

Hastings has 2 5/8" rings in 3/32.

 

http://www.hastingsm...x?AppMACD=2 5/8


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#20 olcowhand OFFLINE  

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Posted March 01, 2013 - 08:13 PM

Brian, I do believe the Tecumseh HH60 has a 2 5/8" bore.  I can check my spare block tomorrow.  Measure your wrist pin, and it's location from top of piston.


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#21 Texas Deere and Horse OFFLINE  

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Posted March 03, 2013 - 09:27 PM

Daniel, The wrist pin is .625" (5/8") DIA., and center of pin is 1.3125" (1 5/16"). 1st and 2nd rings measure .0935" and the Oil ring is .187" and is a one piece ring.



#22 olcowhand OFFLINE  

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Posted March 03, 2013 - 09:30 PM

Daniel, The wrist pin is .625" (5/8") DIA., and center of pin is 1.3125" (1 5/16"). 1st and 2nd rings measure .0935" and the Oil ring is .187" and is a one piece ring.

 

I forgot to check, but will try to remember tomorrow.  Remind me if needed!


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#23 Texas Deere and Horse OFFLINE  

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Posted March 03, 2013 - 10:50 PM

LOL, it's OK. It only took me 2 days to remember to get you the info. :D



#24 olcowhand OFFLINE  

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Posted March 04, 2013 - 04:52 PM

Daniel, The wrist pin is .625" (5/8") DIA., and center of pin is 1.3125" (1 5/16"). 1st and 2nd rings measure .0935" and the Oil ring is .187" and is a one piece ring.

Bore is exactly the same at 2 5/8".  Wrist pin identical at .625.  Problem is, the TEC wrist pin is centered only approximately 1.150" from the top of the piston, so the piston would like about .1625" from reaching the top of the cylinder.  You possibly could overcome much or all of that by shaving the head and milling pockets deeper for the valves.   Rings don't matter, as you'd simply use the correct rings for the HH60 piston.


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#25 Texas Deere and Horse OFFLINE  

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Posted March 04, 2013 - 05:12 PM

If I can get the bore to clean up good enough, it's got a couple of pits in it low in the bore. I'll just re-ring it, the piston in nice shape.

 

Thanks Daniel for checking on this for me. :thumbs:



#26 tractorgarden ONLINE  

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Posted March 06, 2013 - 11:16 PM

Brian, Is it running yet? :poke:


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#27 olcowhand OFFLINE  

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Posted March 07, 2013 - 09:50 AM

Brian, Is it running yet? :poke:

 

 

It's been 3 days since Brian's last post about it, so it should be purring by now!  :smilewink:


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#28 Texas Deere and Horse OFFLINE  

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Posted March 07, 2013 - 11:03 AM

Brian, 3/32 = .0938.  Did you measure a ring, or the land.  If you measured the ring, then chances are it's a 3/32" ring.  

Hastings has 2 5/8" rings in 3/32.

 

http://www.hastingsm...x?AppMACD=2 5/8

 

How do you order rings from this site or can you? I also need to see which design rings the kit has to match up mine.



#29 olcowhand OFFLINE  

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Posted March 07, 2013 - 11:24 AM

How do you order rings from this site or can you? I also need to see which design rings the kit has to match up mine.

 

Best thing to do is call them.  They had superb tech people when I needed rings.  I had actually thought I needed set "X", but they showed me I needed set "Y".  (x & y just rep #'s)


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#30 Texas Deere and Horse OFFLINE  

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Posted March 07, 2013 - 12:37 PM

Call Hastings and found out that this engine uses the same rings as the K-90/91 engine, so I will order a set.

 

Does anyone know the piston wrist pin location to the top of the piston? Maybe Kohler used the K-90/91 piston and longer stroke. Will have to check this out.






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