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K301a Blown head gasket


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#1 EricFromPa OFFLINE  

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Posted April 14, 2011 - 08:39 PM

Well I got to tear into the Cub Cadet 127 a bit today.
I got the head off and found that what the PO said about it having a Blown Head Gasket was an understatement.

It's Definitely Blown.

The piston has .010 on it,I think who ever rebuilt it never retorqued the head bolts/nuts.
The head was slightly cupped in the middle but we got it cleaned up and trued it up on the bridge-port.
But WOW that is the worst head gasket I've ever seen on a Kohler.
It must of been blown for a while,the Blower housing has a spot of paint cooked off from it.

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Edited by EricFromPa, April 14, 2011 - 08:45 PM.


#2 wvbuzzmaster OFFLINE  

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Posted April 14, 2011 - 08:47 PM

I had the head gasket go on the Case 222 (Kohler K301) and it would not even run, and it was a small bit too. Tore into it, not a bad job either.

Also, for those that don't know, a Bridge-Port is a brand of milling machine.

#3 KennyP ONLINE  

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Posted April 15, 2011 - 08:43 AM

That ought to up the compression some. My Bridge-Port is going to consist of a piece of glass and fine sandpaper, manual powered. Good luck with it.

#4 olcowhand OFFLINE  

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Posted April 15, 2011 - 10:37 AM

Bad as it blown, I don't see how it ran long enough to get eroded that bad!

#5 rwhiteley OFFLINE  

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Posted May 01, 2011 - 07:55 AM

I would have to say that is the worst one I have ever seen. Prior owner must not have been very mechanically inclined or just didnt care.

#6 EricFromPa OFFLINE  

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Posted May 02, 2011 - 11:27 PM

The PO had it rebuilt.I'm guessing that he never retorqued the head bolts.
It's bored .010 over.I cleaned up the head on the Mill it was warped slightly.
Put the head on and torqued to 30 lbs and let it Idle for 20 minutes then retorqued it "Hot torque" to 40 lbs.

I've been working the tractor pretty hard and it seems to be holding up good.Has a mountain of power.

The PTO clutch basket is giving me a headache now.I wonder why every Cub I get has a sloppy loose clutch basket.
The darn things are getting hard to find.I got a whole PTO and basket coming for it that's in good shape.I paid $30 for a complete PTO and Basket.

#7 greg86ss OFFLINE  

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Posted May 30, 2011 - 10:03 PM

The head gaskets seem to fail in a lot of the K301 engines, not sure why but I have done a couple and they always come out fine.

#8 EricFromPa OFFLINE  

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Posted May 31, 2011 - 04:59 AM

The engine was rebuilt.It's only a guess but I don't think they re-torqued the head bolts.

I have to pull the engine now.It seems that the Connecting rod bolts are starting to back off.It has a very faint rod knock at low idle.

I might just rebuild it completely.It's been a while scene it was rebuilt.After running it for a while I notice vapor coming out of the Breather.So it's got some blow-by.It's .010 over I'm just going to clean it up with the hone and shove a set of shaved .020 rings in it and run it.I have a spare Std rod just in case.I just hope the crank hasn't been turned down.

I think the K301 is just a K241 with a bigger boar,larger piston and different connecting rod.If so that would explain the blowing head gaskets in the K301.It would have less gasket material making contact with the head and block.

Edited by EricFromPa, May 31, 2011 - 05:06 AM.





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