« previous next »
Pages: [1]   Go Down

Author Topic: Adapting a Jonsered carb of specious origin to Husqvarna Top ends.  (Read 2385 times)

0 Members and 40 Guests are viewing this topic.

Offline

  • 6 cube
  • ****
  • Posts: 260
  • Karma: 57

    • Total Badges: 25
    Badges: (View All)
    Seventh year Anniversary Sixth year Anniversary Fifth year Anniversary Level 5 Linux User Mobile User
Adapting a Jonsered carb of specious origin to Husqvarna Top ends.
« on: January 26, 2014, 06:27:14 pm »
Sort of did this because I could. Going to use these Jonsered saws to test Aftermarket stuff for the same class Husqvarna .... because many will see the Husqvarna models and assume they can't use them on these older Jonsered. SO I'm forcing the issue. Going to do ALL the comparisons of after market parts designed for Husqvarna's of the 268-272 species on Jonsereds 670 and 625 to prove you can and to hammer the point home....definition of win? To help those old Jonsered's catch a second chance in life... :)

First one.....that 268 open port top end with goofy port timing on a 670.


Logged

Share on Bluesky Share on Facebook

Offline

  • Administrator
  • Nitro Hotsaw
  • *******
  • Posts: 24888
  • Karma: 665
  • OHIO REDNECK Saw Repair Getter Done
    • Redneck Chainsaw Repair

    • Total Badges: 53
    Badges: (View All)
    Tenth year Anniversary Nineth year Anniversary Level 8 Apple User Eighth year Anniversary 20000 Posts
Re: Adapting a Jonsered carb of specious origin to Husqvarna Top ends.
« Reply #1 on: January 26, 2014, 06:41:08 pm »
I got a question on these. I seen a jonsered 670 piston that had same part number for the 266.  Same pistons or mislabeled.   I dont know these well at all to know anything.

I can get a pic and part number I seen.
Logged

Offline

  • 6 cube
  • ****
  • Posts: 260
  • Karma: 57

    • Total Badges: 25
    Badges: (View All)
    Seventh year Anniversary Sixth year Anniversary Fifth year Anniversary Level 5 Linux User Mobile User
Re: Adapting a Jonsered carb of specious origin to Husqvarna Top ends.
« Reply #2 on: January 26, 2014, 06:58:17 pm »
Quote from: Cut4fun_ on January 26, 2014, 06:41:08 pm
I got a question on these. I seen a jonsered 670 piston that had same part number for the 266.  Same pistons or mislabeled.   I dont know these well at all to know anything.

I can get a pic and part number I seen.

I can believe that as both 266's and 670's are 50mm closed port cylinder's. 670's are all closed port cylinders, I believe one or all of the 266's models are closed port cylinders as well. If I remember one of the versions of 266 had a funky intake, smaller than say a 268; but still was a closed port 50mm cylinder.

I think there was se & xp version's of the 266. Pretty certain the xp was closed port. Bob would know. AND come to think of it, that video we did have a 266 closed port cylinder as one of the cylinders we looked at.

Either way.....I tossed the 266 cylinder on one I built in favor of a 272xp cylinder! One of the easier cross builds on that chassis.
Logged

Offline

  • Administrator
  • Nitro Hotsaw
  • *******
  • Posts: 24888
  • Karma: 665
  • OHIO REDNECK Saw Repair Getter Done
    • Redneck Chainsaw Repair

    • Total Badges: 53
    Badges: (View All)
    Tenth year Anniversary Nineth year Anniversary Level 8 Apple User Eighth year Anniversary 20000 Posts
Re: Adapting a Jonsered carb of specious origin to Husqvarna Top ends.
« Reply #3 on: January 26, 2014, 07:41:37 pm »
Never pulled the 266 I had open before selling. But I had thought (guessing) a 266 was full circle windowed type piston and this 670 was your normal windowed piston. Thats why I was wondering.
Was there 2 pistons used in the 266 saws maybe?
Logged

Offline

  • Nitro Hotsaw
  • *******
  • Posts: 1196
  • Karma: 71
  • Information collector
  • Location: Troms, North Norway

    • Total Badges: 28
    Badges: (View All)
    Sixth year Anniversary Fifth year Anniversary Fourth year Anniversary 1000 Posts Third year Anniversary Spammer 25 Posts in one day
Re: Adapting a Jonsered carb of specious origin to Husqvarna Top ends.
« Reply #4 on: January 27, 2014, 06:01:50 am »
All the 266se and xp Huskys were closed port - but up to some time in (or around) 1985 the se shared the smaller carbs with the 61 and 162 (15.9 mm venturi vs. 17.5).

As far as I know, no important changes happened at the same time as the designation changed from se to xp.
Logged

Offline

  • Nitro Hotsaw
  • *******
  • Posts: 1196
  • Karma: 71
  • Information collector
  • Location: Troms, North Norway

    • Total Badges: 28
    Badges: (View All)
    Sixth year Anniversary Fifth year Anniversary Fourth year Anniversary 1000 Posts Third year Anniversary Spammer 25 Posts in one day
Re: Adapting a Jonsered carb of specious origin to Husqvarna Top ends.
« Reply #5 on: January 27, 2014, 06:03:27 am »
Quote from: Cut4fun_ on January 26, 2014, 07:41:37 pm
Never pulled the 266 I had open before selling. But I had thought (guessing) a 266 was full circle windowed type piston and this 670 was your normal windowed piston. Thats why I was wondering.
Was there 2 pistons used in the 266 saws maybe?

At least two, and I understand the early saws had the full circle ones.
Logged

Offline

  • 6 cube
  • ****
  • Posts: 260
  • Karma: 57

    • Total Badges: 25
    Badges: (View All)
    Seventh year Anniversary Sixth year Anniversary Fifth year Anniversary Level 5 Linux User Mobile User
Re: Adapting a Jonsered carb of specious origin to Husqvarna Top ends.
« Reply #6 on: January 27, 2014, 07:00:27 pm »
Wonder if the 670 piston would produce a little more power.
Logged

Offline

  • Piped Saw
  • *****
  • Posts: 369
  • Karma: 130
  • Location: Ulster County, NY

    • Total Badges: 29
    Badges: (View All)
    Tenth year Anniversary Nineth year Anniversary Eighth year Anniversary Seventh year Anniversary Sixth year Anniversary Fifth year Anniversary
Re: Adapting a Jonsered carb of specious origin to Husqvarna Top ends.
« Reply #7 on: February 13, 2014, 03:50:29 pm »
They're all the same piston at this point. Some 266's dd have the full circle piston. Not sure it that was ever used on early 670's, but I suspect it was.

Later 670 piston, a Super or Champ is the same piston as the 268XP. Sifting through old IPL's can cause some confusion, as there were changes over the years. But ordering any 50mm piston for these saws will all supercede up to the same number, which is the 670/268XP item.

If you prefer the full skirt style, Forester has a really nice one that I've used a couple times. I don't have a strong preference either way, but that is the one 50mm open port AM piston that I have easiest access to, so that's what I've been using.
Logged
Husqvarna-Jonsered

Ashokan Turf and Timber

845-657-6395
Pages: [1]   Go Up
« previous next »
 

Related Topics

  Subject / Started by Replies Last post
5 Replies
4096 Views 		Last post February 21, 2012, 01:29:32 pm
by 660magnum
7 Replies
2985 Views 		Last post August 13, 2012, 03:29:59 pm
by Cut4fun .
39 Replies
12671 Views 		Last post August 25, 2014, 07:35:19 am
by KilliansRedLeo
4 Replies
954 Views 		Last post November 19, 2013, 08:08:11 pm
by jacob j.
5 Replies
2706 Views 		Last post November 27, 2013, 10:05:55 am
by KilliansRedLeo
27 Replies
3103 Views 		Last post March 23, 2014, 04:52:19 am
by dutchsawdoctor
15 Replies
2820 Views 		Last post April 03, 2014, 09:16:44 pm
by Al Smith
7 Replies
2556 Views 		Last post February 02, 2015, 09:20:28 pm
by Uncle Lee
8 Replies
3160 Views 		Last post November 14, 2016, 08:57:22 pm
by farmboy
0 Replies
3636 Views 		Last post November 26, 2016, 02:35:22 pm
by weimedog