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#1
02-01-2021, 12:31 AM
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Head gasket replaced
Well my "new" 100 was clacking away, blown head gasket. Took it apart and only the inner metal ring was holding it. I flattened the head on 120 grit sandpaper on a pretty flat surface, finishing with 220 grit. There was a deep depression where that metal ring went around and it took everything my arm had to get it 99% gone!
So then looking at the new gasket, it has no metal ring. There must be two types. I need the tractor for tomorrows storm, so went with it, torqued to 30 ftlbs and buttoned her back up. This Kohler smokes pretty bad so a rebuilt will eventually go in there. I guess the big question is what's the difference between the two types of head gaskets? Looks like the metal ring style, being more expensive, must be better?
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Model 100 Dec 2020 - Running condition, has snow plow! Model 123 Nov 2020 Hydro needs much work, or resto, building front end loader for this one Model 100 Feb 2019 apart for total frame-off / sandblast etc resto Model 70 Sep 2020 needs total resto and an engine, or for parts Model 70/100 Mar 2021 buried in rust, frozen engine, got free for parts. two spare hydro rears "in for a penny, in for a pound!" 
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#2
02-01-2021, 07:53 AM
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As I learned here a while ago, the metal ring is called a fire ring.
The fire ring gasket is a much better than gasket without the ring. The non fire ring gasket doesn't seal as well and can blow out a hole , usually near the exhaust. From there on, I've always buy one with fire ring.
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Two 125's and a 124 all with 42" decks Plow blade #2 Cart QA36 snowthower
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#4
02-01-2021, 11:40 AM
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The Kohler 47-041-15-S Head Gasket might be worth it, as compared to the assumed Chinese knock off.
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[B]Roland Bedell[/B] CC Models: 100, 105, 1450, 782, (2) 784, & 2072 [SIZE="4"][B][COLOR="Red"]Buy:[/COLOR][COLOR="Blue"] Made in the USA[/COLOR][/B] [/SIZE]:American Flag 1:
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#5
02-01-2021, 02:08 PM
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cool advice all! thanks!
 this engine smokes and is coming out this spring, and I should have a replacement rebuilt by then. Maybe even a K301. so I will take Georges advice and retorque for now. next one will be the Kohler with the ring!I did notice the head bolts were NOT very tight, must not have been retorqued maybe...
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Model 100 Dec 2020 - Running condition, has snow plow! Model 123 Nov 2020 Hydro needs much work, or resto, building front end loader for this one Model 100 Feb 2019 apart for total frame-off / sandblast etc resto Model 70 Sep 2020 needs total resto and an engine, or for parts Model 70/100 Mar 2021 buried in rust, frozen engine, got free for parts. two spare hydro rears "in for a penny, in for a pound!"
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#6
02-02-2021, 12:01 AM
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Quote:
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#7
02-02-2021, 08:42 AM
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Quote:
Do follow the torque sequence. As far as the fire ring head gasket vs the flat one. The flat ones being sold now by Stens and other reputable manufactures appear to work as designed. failures seem to be from lack of a retorque situation. Now if one has stepped up the compression quite a bit from the 6 to 1 or so factory rating as in modified or a pulling situation either use fire ring or they go to a soft copper gasket or flycut, for a copper "O" ring gasket. Apology for the long answer but some like to know the "why" of things.
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#8
02-02-2021, 11:25 AM
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Apology for the long answer but some like to know the "why" of things.
The why of things is what makes these adventures so much fun. At least for me. Ken
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#9
02-02-2021, 11:28 AM
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No need to apologize George. You are always full of good information.
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[B]Roland Bedell[/B] CC Models: 100, 105, 1450, 782, (2) 784, & 2072 [SIZE="4"][B][COLOR="Red"]Buy:[/COLOR][COLOR="Blue"] Made in the USA[/COLOR][/B] [/SIZE]:American Flag 1:
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