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Author Topic: Solo 680 piston  (Read 3940 times)

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Offline adam32

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Re: Solo 680 piston
« Reply #10 on: March 21, 2015, 12:39:24 pm »
Quote from: Cut4fun_ on March 21, 2015, 11:57:28 am
Anyone got solo 680 piston specs.

There is a guy talking to OP and me saying he used a 272 piston in a 680.



I believe I tried one and it was too short. The exhaust would free port. Bore size is the same but skirt was too short if I remember right.
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Offline adam32

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Re: Solo 680 piston
« Reply #11 on: March 21, 2015, 12:40:18 pm »
    Husqvarna 272, 272K
    Replaces Part Number 503 60 98 03
    Bore 52mm
    Height 40.5mm
    Head Type Flat
    Piston Pin 12mm x 33mm x 8mm
    Ring 52mm x 1.5mm (Caber F-Cast GH.F)
    Compression/Pin Top to top of Piston 18mm
    Compression/Pin Center to top of Piston 24mm

    Stihl 064, MS 640
    Replaces Part Number 1122 030 2001
    Bore 51.96mm
    Height 43mm
    Head Type Flat
    Piston Pin 12mm x 33mm x 8mm
    Rings 52mm x 1.5mm (Caber F-Cast GH.F)
    Compression/Pin Top to top of Piston 17mm
    Compression/Pin Center to top of Piston 23mm
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Offline Cut4fun .

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Re: Solo 680 piston
« Reply #12 on: March 21, 2015, 12:50:58 pm »
Thanks.  His pics were showing the 272 skirts being short but I was wondering.  I would guess it is a solo 680 piston on right?  I never seen one to know.



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Offline adam32

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Re: Solo 680 piston
« Reply #13 on: March 21, 2015, 01:24:37 pm »
Yes that's a 680 piston.
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Offline Riddler1100

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Re: Solo 680 piston
« Reply #14 on: March 21, 2015, 06:33:13 pm »
So the 272 will not work due to the shorter skirt is that correct?? And am I reading this right that a Stihl 046 piston will work only thing is the pin bosses need to be filled back to accomodate top of crank??

Thanks guys
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Offline Cut4fun .

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Re: Solo 680 piston
« Reply #15 on: March 21, 2015, 06:45:52 pm »
Quote from: Riddler1100 on March 21, 2015, 06:33:13 pm
So the 272 will not work due to the shorter skirt is that correct?? And am I reading this right that a Stihl 046 piston will work only thing is the pin bosses need to be filled back to accomodate top of crank??

Thanks guys

064
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Offline Riddler1100

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Re: Solo 680 piston
« Reply #16 on: March 21, 2015, 09:02:31 pm »
Also does it matter if the replacement piston I choose has 2 x piston rings or only 1?? Obviously solo has 2 rings but would there be any problems using a piston that only has 1, as I would assume solo engineers gave the piston 2 rings for a reason....
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Offline Cut4fun .

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Re: Solo 680 piston
« Reply #17 on: March 21, 2015, 09:21:45 pm »
Not to me. I have used 1 in 2 and 2 in ones that came with 1.
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Offline Cut4fun .

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Re: Solo 680 piston
« Reply #18 on: March 21, 2015, 09:24:24 pm »
@adam32 what do you think of the BB372 piston being used in a stock 680?   I used a BB372 in a 475 because it was drop in. Now if hot ported or race I would want the better OEM 064 or meteor piston.

The 475 is windowed and I used the non-windowed bb372 and she runs great stock.
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Offline Riddler1100

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Re: Solo 680 piston
« Reply #19 on: March 21, 2015, 09:26:42 pm »
Yeah I'm leaning towards using the BB372, but am now worried a bit by the skirt difference in length. Would this create any dramas??
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