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#1
03-23-2019, 08:56 PM
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Valve guide ID question - k241
I am at the very beginning of taking the measurements for the repair/rebuild of the engine on my cub cadet 108 fixer upper. The first ones I have taken are for the exhaust and intake valve guide ID's. Here is what I have come up with:
Intake valve guide ID top of guide = .3125 mid-point of guide = 3125 Exhaust valve guide ID top of guide = 3125 mid-point of guide = .3110 Now, what I don't fully understand is why the mid-point of the exhaust guide is under specs as given in the manual (.312/.313). I suspect it has something to do with overheating on the exhaust side of the top end. The fins there were packed with dirt when I took the engine out and cleaned it up and I believe this guide does show an issue that would probably cause the valve to stick. I would like to know how to address it (preferably without replacement). I have attached pictures of the general work, but the first pic is the main one. It is of the inside of the exhaust guide and it shows (as best I could) some kind of blemish at the mid-point of the guide. It appeared to me like cracked chrome. 
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