Author Topic: Husqvarna 262XP 262 261  (Read 3181 times)

0 Members and 0 Guests are viewing this topic.

Offline Magnus

  • 6 cube
  • ****
  • Posts: 237
  • Karma: 26
  • Location: Sweden
    • Chainsaw Collectors Forum
Re: OK 262XP guys
« Reply #70 on: January 17, 2014, 09:30:25 am »
You ever found any of the 254/262 with double gaskets?
Chainsaw nut!

Offline KilliansRedLeo

  • Nitro Hotsaw
  • *******
  • Posts: 2361
  • Karma: 80
  • Location: Rochester, NY
    • RoCHusqvarna
Re: OK 262XP guys
« Reply #71 on: January 17, 2014, 09:35:46 am »
You ever found any of the 254/262 with double gaskets?

No, but in order to get the 365SP piston to work in the test saw, I may have to use two, 1 thin and 1 thick because the compression height of the 365SP piston is 1.5mm 0.060 taller than the 262XP piston. Why do you ask?

"When the people fear the government...you have tyranny....When the government fears the people....you have liberty"

Thomas Jefferson
1743-1826

Offline Magnus

  • 6 cube
  • ****
  • Posts: 237
  • Karma: 26
  • Location: Sweden
    • Chainsaw Collectors Forum
Re: OK 262XP guys
« Reply #72 on: January 17, 2014, 12:24:53 pm »
There was a rek out to dealers in early 90's to put in two of the thick ones to increase compression volume and by that allow larger amount amount of fuel/air above piston that can expand and get a bit more torq out of them.

Why would you put a 365 piston in a 262?
Chainsaw nut!

Offline KilliansRedLeo

  • Nitro Hotsaw
  • *******
  • Posts: 2361
  • Karma: 80
  • Location: Rochester, NY
    • RoCHusqvarna
Re: OK 262XP guys
« Reply #73 on: January 17, 2014, 01:29:08 pm »
There was a rek out to dealers in early 90's to put in two of the thick ones to increase compression volume and by that allow larger amount amount of fuel/air above piston that can expand and get a bit more torq out of them.

Why would you put a 365 piston in a 262?

Just an experiment to see how the saw would run using a non windowed piston that was 1.5mm taller in compression height. Well the idea of two gaskets as the rek said is a very intriguing option. If the 365 piston does not work out, I will try a 262 piston and two gaskets to see. Thanks for the tip!

Hmmmm, a little more thought on this, you mentioned that the advice to dealers was in the early 90s. The first two specifications on the saws used non-decomp Kolben Schmidt cylinders which were know to have a smaller combustion chamber than the later saws with a Mahle cylinder. I wonder if the advice to dealers was about getting a little more out of the KS cylinders. And I further wonder if it applies to both the KS and Mahle cylinders or only the KS?
"When the people fear the government...you have tyranny....When the government fears the people....you have liberty"

Thomas Jefferson
1743-1826

Offline Magnus

  • 6 cube
  • ****
  • Posts: 237
  • Karma: 26
  • Location: Sweden
    • Chainsaw Collectors Forum
Re: OK 262XP guys
« Reply #74 on: January 17, 2014, 03:35:37 pm »
There was a rek out to dealers in early 90's to put in two of the thick ones to increase compression volume and by that allow larger amount amount of fuel/air above piston that can expand and get a bit more torq out of them.

Why would you put a 365 piston in a 262?

Just an experiment to see how the saw would run using a non windowed piston that was 1.5mm taller in compression height. Well the idea of two gaskets as the rek said is a very intriguing option. If the 365 piston does not work out, I will try a 262 piston and two gaskets to see. Thanks for the tip!

Hmmmm, a little more thought on this, you mentioned that the advice to dealers was in the early 90s. The first two specifications on the saws used non-decomp Kolben Schmidt cylinders which were know to have a smaller combustion chamber than the later saws with a Mahle cylinder. I wonder if the advice to dealers was about getting a little more out of the KS cylinders. And I further wonder if it applies to both the KS and Mahle cylinders or only the KS?
I am in Sweden so perhaps it is market differances. I don't see many 262 without decomp here...
There was Gilardoni cylinders to, I think I still have one.
Was it not on here that was discussed recently?

The advice was mainly to 254's but would work for any saw I guess..
Problem is to get it tight and keep it tight. I glued mine with "Form a gasket".
Chainsaw nut!

Offline SawTroll

  • Nitro Hotsaw
  • *******
  • Posts: 1196
  • Karma: 68
  • Information collector
  • Location: Troms, North Norway
Re: OK 262XP guys
« Reply #75 on: January 17, 2014, 04:35:06 pm »
I am getting quite confused here now by that early 1990s advice to dealers.

Using a double (thick) gasket will of course lead to a larger squish and less compression + raise all the ports. Unless the design was faulty from the outset (piston hitting cylinder roof), I find it hard to believe this would improve the performance of the saw.  ???

Now I know that really high compression tends to be over rated on certain chainsaw forums, but I don't believe that is an issue in this case?

Offline KilliansRedLeo

  • Nitro Hotsaw
  • *******
  • Posts: 2361
  • Karma: 80
  • Location: Rochester, NY
    • RoCHusqvarna
Re: OK 262XP guys
« Reply #76 on: January 17, 2014, 05:17:24 pm »
I suppose that the only way we will get to the bottom of this is to find a copy of what was sent out to dealers by HVA in the early 90s!
"When the people fear the government...you have tyranny....When the government fears the people....you have liberty"

Thomas Jefferson
1743-1826

Offline Magnus

  • 6 cube
  • ****
  • Posts: 237
  • Karma: 26
  • Location: Sweden
    • Chainsaw Collectors Forum
Re: OK 262XP guys
« Reply #77 on: January 17, 2014, 05:50:42 pm »
I think I have it here, but not sure were...

YOU come help me find it. I put the coffee on.
Chainsaw nut!

Offline KilliansRedLeo

  • Nitro Hotsaw
  • *******
  • Posts: 2361
  • Karma: 80
  • Location: Rochester, NY
    • RoCHusqvarna
Re: OK 262XP guys
« Reply #78 on: January 17, 2014, 06:04:11 pm »
How about this, YOU mail the books to me, I will find it and make a copy of all the books and put on DVD, then mail books back to you! I will even send SawTroll his own copy!
"When the people fear the government...you have tyranny....When the government fears the people....you have liberty"

Thomas Jefferson
1743-1826

Offline Magnus

  • 6 cube
  • ****
  • Posts: 237
  • Karma: 26
  • Location: Sweden
    • Chainsaw Collectors Forum
Re: OK 262XP guys
« Reply #79 on: January 17, 2014, 06:11:56 pm »
Ha! Good idea. I like mine better though..

I think it is all available already in HVA database. These binders are a mess to find info in.
Chainsaw nut!

 

Related Topics

  Subject / Started by Replies Last post
Husky 556

Started by Spike60 « 1 2 3 » Husqvarna

29 Replies
1606 Views
Last post September 05, 2014, 07:35:49 pm
by SawTroll
husky 254

Started by brokenbudget « 1 2 3 » Husqvarna

28 Replies
911 Views
Last post April 30, 2013, 12:08:04 pm
by SawTroll
4 Replies
256 Views
Last post May 15, 2013, 07:54:16 pm
by SawTroll
3 Replies
195 Views
Last post June 24, 2013, 08:31:57 pm
by 660magnum
4 Replies
293 Views
Last post July 02, 2013, 09:47:32 pm
by farmboy
husky 55 help

Started by mrbb « 1 2 » Husqvarna

15 Replies
623 Views
Last post July 29, 2013, 07:59:33 am
by mrbb
15 Replies
440 Views
Last post January 23, 2015, 02:03:24 pm
by Bluegill
1 Replies
123 Views
Last post February 03, 2018, 07:42:16 am
by Cut4fun .
4 Replies
167 Views
Last post March 30, 2018, 10:35:37 am
by joel4bs
2 Replies
160 Views
Last post April 27, 2018, 08:04:59 pm
by leec