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Ancient Cub 109 Looking For A Repower?


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#1 troll OFFLINE  

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Posted June 18, 2012 - 08:05 AM

Gooday folks
I do not own a Cub but my good neighbor does and it seems his beautifully maintained 109 is in need of a new power plant.
The local small engine shop has told him that he needs a new motor or an oversized piston replacement, but their judgement is suspect. Any sage advice as to 'next steps' would be appreciated before he gives up entirely. The 109 real is a sweet machine were it not for its current power plant troubles.
Thanks
Troll

#2 LTD OFFLINE  

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Posted June 18, 2012 - 11:30 AM

The 109's arent that ancient. LOL Why does it need a new engine? The old one smoke or just run bad? I would'nt give up on it just yet. The old Kohlers are very good engines and they built so many you could probably find another one for it; if the old one would cost too much too repair.What was the quote to repair it?

Edited by LTD, June 18, 2012 - 11:33 AM.


#3 troll OFFLINE  

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Posted June 18, 2012 - 11:42 AM

LTD-
The local small engine shop claims it is a piston problem. The owner says it started losing power, then quit altogether. I am trying to convince him to keep the Cub 109 and repower. The existing motor is missing its decals, so its model number is unknown. If it is original to the tractor, I am guessing it is a K-241 (10 h.p.) Am I correct in that assumption?
Any ideas as to where and how much a good rebuilt engine would sell for? The owner has access to a dropship address in NY.
Thanks for the help
Troll

#4 Amigatec OFFLINE  

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Posted June 18, 2012 - 12:46 PM

I would rebuild the one you have now, they aren't that expensive to rebuild.
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#5 Utah Smitty OFFLINE  

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Posted June 18, 2012 - 01:23 PM

I would rebuild the one you have now, they aren't that expensive to rebuild.


You can buy a good aftermarket rebuild kit for under $150 -- piston, rod, rings, valves, gaskets & points.
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#6 bowtiebutler956 OFFLINE  

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Posted June 18, 2012 - 04:42 PM

Like Utah Smitty said, you can buy a very complete aftermarket rebiuld kit quite cheap. There is a place on ebay called thismansonestopshop that sells a very complete kit for about $120. It includes piston, rod, valves, gaskets and seals. I would rebiuld what I had. I don't know what you local machine shop prices are like, but here boring cylinder is $30, valve job is $40. So even after having it cleaned the price is usually under $100 here. :thumbs:

Matt
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#7 troll OFFLINE  

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Posted June 18, 2012 - 05:32 PM

Thank you all Gentlemen. I will pass on the advice to the owner.
One question remains unanswered......Did the 109 come equipped with the kohler K241???
If so, then I would agree that a rebuild kit would be a practical solution.
Troll

#8 KennyP ONLINE  

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Posted June 18, 2012 - 05:37 PM

Gooday folks
I do not own a Cub but my good neighbor does and it seems his beautifully maintained 109 is in need of a new power plant.
The local small engine shop has told him that he needs a new motor or an oversized piston replacement, but their judgement is suspect. Any sage advice as to 'next steps' would be appreciated before he gives up entirely. The 109 real is a sweet machine were it not for its current power plant troubles.
Thanks
Troll

How far oversized are they talking? .010, .020, .030? Sounds like they are scaring the daylights out of the guy!
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#9 LTD OFFLINE  

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Posted June 18, 2012 - 05:41 PM

Thank you all Gentlemen. I will pass on the advice to the owner.
One question remains unanswered......Did the 109 come equipped with the kohler K241???
If so, then I would agree that a rebuild kit would be a practical solution.
Troll

Yes, they came with a K241.
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#10 Amigatec OFFLINE  

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Posted June 18, 2012 - 06:47 PM

The 10 means 10hp, and the 9 means its a wide frame hydro. It was built between 1971 and 1974.

I have a 129 and 149, same except a 12 or 14 hp motor, and the 149 came hydro lift and lights.

Edited by Amigatec, June 18, 2012 - 06:48 PM.

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