Author Topic: Stihl Piston/Cylinder Kits  (Read 3691 times)

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Offline Cut4fun .

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Re: Stihl Piston/Cylinder Kits
« Reply #10 on: December 28, 2012, 08:12:27 pm »
The 026 pro I tore down was 44mm. 

I'd be pulling topend  and micing to make sure.

Offline Al Smith

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Re: Stihl Piston/Cylinder Kits
« Reply #11 on: December 28, 2012, 08:22:41 pm »
The dealer told him it needs a new piston./end quote .

Might be might not be . A piston doesn't have to be perfect to work and work well .If it's just lightly dust injested or lightly exhaust scorched you can buff it out most times .

Offline 604f_1

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Re: Stihl Piston/Cylinder Kits
« Reply #12 on: December 29, 2012, 05:53:17 pm »
As far as I know the 44.7 mm cylinders were only found on 260 and not on 026 . Some 260 were also 44mm thought .

Offline 660magnum

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Re: Stihl Piston/Cylinder Kits
« Reply #13 on: December 29, 2012, 06:36:50 pm »
As far as I know the 44.7 mm cylinders were only found on 260 and not on 026 . Some 260 were also 44mm thought .

I think what you say is correct . . . .

But you never know on a old saw, for if the part will fit, someone may have put it on there?  It is best that it is checked for size.
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Offline davbell22602

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Re: Stihl Piston/Cylinder Kits
« Reply #14 on: December 30, 2012, 03:18:40 pm »
I pulled spark plug and did a compression test. I got 45 but it peaked to 50. I pulled muffler and found a scored piston. I found cylinder that didnt have a good cross hatch. I saw some up and down fine scratches but nothing deep like a score mark. Also the spark plug had brown carbon build up on it around electrode of the spark plug.

Offline Cut4fun

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Re: Stihl Piston/Cylinder Kits
« Reply #15 on: December 30, 2012, 04:00:48 pm »
So was it 44mm or a later 44.7mm?

Sounds like a easy fix then. Either just clean up piston and re-ring if not real bad scored up piston or put a meteor piston kit in with the caber rings that come in their kits.

Did you say it was straight gasses?

Offline davbell22602

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Re: Stihl Piston/Cylinder Kits
« Reply #16 on: December 30, 2012, 04:13:58 pm »
So was it 44mm or a later 44.7mm?

Sounds like a easy fix then. Either just clean up piston and re-ring if not real bad scored up piston or put a meteor piston kit in with the caber rings that come in their kits.

Did you say it was straight gasses?

I dont know the piston diameter yet. I'm thinking new piston and rings. On baileys site had cast iron rings also for this saw. Any take on cast iron rings?

I dont know about straight gases.

Offline 660magnum

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Re: Stihl Piston/Cylinder Kits
« Reply #17 on: December 30, 2012, 04:24:03 pm »
The number one brand of after market piston rings is Caber and they are sold by Bailey's though you may find them cheaper elsewhere.
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Offline Cut4fun

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Re: Stihl Piston/Cylinder Kits
« Reply #18 on: December 30, 2012, 04:50:56 pm »
I's be figuring out why it scored before putting in a new piston.

Cant spell   ::)       

Offline davbell22602

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Re: Stihl Piston/Cylinder Kits
« Reply #19 on: December 30, 2012, 05:04:09 pm »
I's be figuring out way it scored before putting in a new piston.

I know the piston has brown streaks where it scored at. The spark plug was brown also with build up.

 

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