Author Topic: Jonsered 2083  (Read 6632 times)

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Offline 660magnum

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Re: Jonsered 2083
« Reply #50 on: March 17, 2013, 01:24:06 pm »
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Offline SawTroll

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Re: Jonsered 2083
« Reply #51 on: March 18, 2013, 10:08:05 am »
066 Meteor piston is .020 higher then 2083 OEM piston. Squish with gasket, OEM piston was .041. With 066 piston squish is at .021. Comp is at 170 pounds. The 2083 rod is wider than the 066, piston needs to be opened up. Runs good ;). ..... 

That fits well with what I have read before!  ;D

Offline Cut4fun

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Re: Jonsered 2083
« Reply #52 on: April 11, 2013, 06:06:46 pm »
066 Meteor piston is .020 higher then 2083 OEM piston. Squish with gasket, OEM piston was .041. With 066 piston squish is at .021. Comp is at 170 pounds. The 2083 rod is wider than the 066, piston needs to be opened up. Runs good ;).

Ron I paid closer attention to my measurements this time and measured the squish closer to where the piston and cylinder  intersect.   I came up with .0245 at tightest on the afm 066 piston with used gasket.

The oem 505 one on the other saw when I installed today was .040 with new oem gasket.  I checked the 425 top before puling it and it was .0435 with used gasket.
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Offline man of stihl

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Re: Jonsered 2083
« Reply #53 on: April 11, 2013, 08:13:41 pm »
Have you run the 505 yet? That's quite a bump in compression too compared to stock.
Ron

Offline Cut4fun .

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Re: Jonsered 2083
« Reply #54 on: April 11, 2013, 08:30:06 pm »
not in wood. rained all day. 

Did you check psi on yours?  LOL I see it now 170psi?

New caber 1 ring on oem, so both will be like new saws to test with. Green one has 2 rings that came with the afm piston. 

yellow v/s green one.   I could feel the difference pulling over too.

Will have the strongest 7900 local along  for comparisons.
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Offline SawTroll

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Re: Jonsered 2083
« Reply #55 on: April 12, 2013, 06:05:22 am »
The Partner P7700 and the Jonsered 2083 (not 2083II) are the really important models in that saw family!  ;D

Offline man of stihl

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Re: Jonsered 2083
« Reply #56 on: April 12, 2013, 05:32:27 pm »
Not timed. But seat of my pants says the stock 7900 was stronger than the 2083. But I've been wrong before... ;)
Ron

Offline Cut4fun .

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Re: Jonsered 2083
« Reply #57 on: April 12, 2013, 07:32:23 pm »
I would think the quad transfers of the 7900 would be over the single transfers of the old school design 475 and 505.
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Offline Cut4fun .

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Re: Jonsered 2083
« Reply #58 on: April 13, 2013, 11:53:21 am »
Ron see if your thinking is like mine on this.

After clearing my mind last night and thinking about this from a racesaw build perspective. I would choose the 475 505 to build as a racesaw before the 7900 though.

Watcha you think.
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Offline man of stihl

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Re: Jonsered 2083
« Reply #59 on: April 13, 2013, 02:15:37 pm »
Idk. There are a lot of the quad port saws ruling the roost nowadays. But I 'm no builder. ;)
Ron

 

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