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Author Topic: engine piston clearances and ring groove clearance  (Read 1216 times)

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Offline Texas-Jim

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Re: engine piston clearances and ring groove clearance
« Reply #20 on: August 09, 2017, 12:35:02 PM »
Al_Smith true on racers but remember they rejet saws from one place to another. They constantly have to compensate for altitude, humidity even wood type. And i don't think they really care how long saws last. Id bet saws are torn down a lot to make sure things are right.

We can debate on oils all day but honest truth is I'm not sure oil plays that big of a role in engine failure. Does extra oil lean it out? Yes but I don't think its a death blow. The chip saws may have more trouble dealing with extreme oil mixes but old carbs are in lot of ways more capable of dealing with user actions. Just because the user alters the mix ratio that rarely is that a reason for immediate failure. Iv learned its almost always fuel/air mix or pushing the saw past its design perimeters.

But I still like oil debates. ;D
What we do in life echoes through eternity.

Offline Al_Smith

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Re: engine piston clearances and ring groove clearance
« Reply #21 on: August 09, 2017, 03:33:02 PM »
We're never going to agree about  it but we will debate it forever .Truthfully oils of all types are better these days that in times of yore .

Now then the gent was asking about ring gaps and somebody other than myself had to opened the great never ending debate of oils once again and had to mention Billy Bob,I don't know him myself .I do know Bubba though.
I haven't gaped a set of rings since I was 15 years old,nearly 55 years ago .That was  cast iron rings for a Allis -Chalmers 1938 model B tractor .Any more they just fit without any tweaking .Back 55 years ago they might be tad over sized .BTW that old tractor still runs great .Billy Bob didn't have a thing to do with it . 8)


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