Stihl 021 - 025

[Kronk]

I have a Stihl 021 that I'm slowly rebuilding. I'd like to put the 42mm 025 top end on it while I'm at it for a few more cc's. There's a few manufacturer options available, is there a recommended brand or a brand to stay away from?

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[Kronk]

Looks like I'd need the crank case too. So a complete engine with the 42.5mm piston / head and a different carb. Probably not worth the hassle.

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[sawfun]

I believe the 021 has a weaker stamped rod vs the 023 & 025 forged one.

 

[LoveStihlQuality]

Looks like I'd need the crank case too. So a complete engine with the 42.5mm piston / head and a different carb. Probably not worth the hassle.

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An 021 / 210 value pretty much precludes much beyond fuel line filter carb kit.

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[Hunnry]

I have a Stihl 021 that I'm slowly rebuilding. I'd like to put the 42mm 025 top end on it while I'm at it for a few more cc's. There's a few manufacturer options available, is there a recommended brand or a brand to stay away from?

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Hi, did you find the answer to your question?