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Ugly Stihl 064 overhaul

jacob j.

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redline4

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if you get a new intake boot youll need the newer carb box the flange on intake boot on older boots are wider than the newer boots
you ll get a air leak

Thanks for the info. I have the intake with me, and it's in good shape, no cuts, gouges and still pliable, so it will get used again.
Yessir - that's the style. They work pretty good but eventually the retainers wear out and need replaced.
Thanks. I will just run it as is then until it JMS's itself.
 

redline4

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What's you dudes consensus on this piston?
It's got some shiney spots at the bottom edge of the skirt. None of the visible smear marks can be felt.

20231116_074616.jpg20231116_074627.jpg20231116_074634.jpg

The rings are a bit wide for the bore...
20231116_122526.jpg20231116_122758.jpg


So, order piston and rings because I'm right there or order rings and carry on?
 

redline4

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I'd replace that piston. I see no machining marks towards the top by the rings. Usually when those all all gone the skirt is worn 0.004" or more.

Looking at it in person, the only machine marks are above the top ring land.
I also see no indication that's its a Stihl piston? They are typically proud of their shìt, and nowhere on it is a Stihl logo or name now that I really look at it.
Dunno..
 

jacob j.

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I'd replace that piston. I see no machining marks towards the top by the rings. Usually when those all all gone the skirt is worn 0.004" or more.

That's my opinion. 064s were built to take a lot of wear and I've seen them still running with substantial piston slap.

That piston is well worn. Toss in a Meteor and it'll give you all the cutting you'd ever want.
 

cuinrearview

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I like the finger in the plug hole drop the bare piston test to determine replacement status. YMMV, especially with this group.
 
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