Author Topic: Solo 680 piston  (Read 900 times)

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Offline Cut4fun .

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Re: Solo 680 piston
« Reply #30 on: March 22, 2015, 03:48:01 pm »
Mines apart... About .624

Cool I will run out and measure.

680 above.

I was quick at it so not being precise and batt was almost gone. but thinking I was seeing.

.5905 for the 505  poulan crank

.591 for a 372 husky crank
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Offline 1990husky262

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Re: Solo 680 piston
« Reply #31 on: March 23, 2015, 08:26:42 am »
Is this the same one
HL Supply deal of the day ends today
Price won't last long!!!!
Makita, Dolmar DSC PC 7900, 7901piston kit 52mm
$ 12 99 
Buy
Deal expires midnight on 03/23/2015 (EST)
$ 29 99
REGULAR PRICE
57%
SAVINGS
Quality aftermarket kit. 52mm.
For Makita, Dolmar DSC, PC, 7900, 7901 chainsaws
Includes: piston, rings, wrist pin, cir clips
Replaces OEM part: 038 132 000

Offline Cut4fun

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Re: Solo 680 piston
« Reply #32 on: March 23, 2015, 01:18:57 pm »
Is this the same one
HL Supply deal of the day ends today
Price won't last long!!!!
Makita, Dolmar DSC PC 7900, 7901piston kit 52mm
$ 12 99 
Buy
Deal expires midnight on 03/23/2015 (EST)
$ 29 99
REGULAR PRICE
57%
SAVINGS
Quality aftermarket kit. 52mm.
For Makita, Dolmar DSC, PC, 7900, 7901 chainsaws
Includes: piston, rings, wrist pin, cir clips
Replaces OEM part: 038 132 000

Are you saying aftermarket dolmar 7900 onsale and maybe try it in this case too?

I forget the specs on 7900 but thinking they were short piston and narrow skirts.  I will see if I can dig up oem specs. 

Heck in that case the windowed poulan 475 jonsered 2077 52mm oem piston would work. But finding them is alittle tough oem ( have had them myself).
The afm versions of 475 2077 if like the afm 505 ones will be way off in specs.
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Offline Cut4fun

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Re: Solo 680 piston
« Reply #33 on: March 23, 2015, 01:24:27 pm »
other 52mm

475 2077 oem piston

52mm
top of pin hole to crown 16.75mm
height 42.65mm
pin 12mm



BB372

Bore 52mm
Height 42.5mm
Piston Pin 12mm x 8mm x 36mm
Pin to top of Piston 16.75mm



Stihl 064, MS 640 Meteor
   
    Height 43mm   
    Pin 12mm x 33mm x 8mm
    Pin hole top to top of Piston 17mm


Stihl 046, MS 460

Bore 52mm
Height 39.25mm
Compression/Pin Top to top of Piston 15.5mm
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Offline Cut4fun

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Re: Solo 680 piston
« Reply #34 on: March 23, 2015, 01:25:33 pm »
piston on left is oem dolmar 7900, middle EHP Wiseco,  right 272

 
piston on left is a 7900 used piston, with ring it weighs 85.4 grams , skirt width of 32mm/ 1.260 inch
middle is the wide skirt wiseco piston, with ring it weighs 79.7 grams and has a skirt width of 1.670 /42,5mm
right piston is a stock 272 piston weight was 82.9 grams with ring , skirt width is 35.83mm/1.414 inch,
so race piston is wider and lighter and will fit the 7900/272/460 stihl , I built this piston maining for a race piston and to be run on alcohol/nitro, as you can see its coated everywhere

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Offline Cut4fun

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Re: Solo 680 piston
« Reply #35 on: March 23, 2015, 01:38:42 pm »
Cant come across 52mm 7900 specs besides those posted above for now.

Did find 54mm which is no good here, but maybe the afm specs might be close.

Height 40mm
Piston Pin 12mm x 7mm x 32mm
Circlips 12mm
Compression/Pin to top of Piston 13.25mm
Compression/Pin Center to top of Piston 19.25mm


Going to say dolmar 7900 to short for stock drop in for 680. Just looking at the specs.
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Offline Cut4fun .

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Re: Solo 680 piston
« Reply #36 on: May 07, 2017, 08:12:32 am »
As always members here get first crack for awhile of what I find and see. ;)  Solo 680 full wrap $300  http://chainsawrepair.createaforum.com/trades-swap-section/solo-680-full-wrap/msg77285/#msg77285
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