Author Topic: 338XPT California 2007  (Read 954 times)

0 Members and 0 Guests are viewing this topic.

Offline Oliver1655

  • 3 cube
  • *
  • Posts: 21
  • Karma: 2
  • Location: Centarl Missouri
338XPT California 2007
« on: October 23, 2013, 09:30:54 am »
I just picked up a Husqvarna 338XPT California - 45cc saw.  Serial number starts with an "07" which should make it a 2007 model. The fuel cap is gray & I don't see a "cat" stamped on the visible portion of the muffler.  SO --- I am guessing it is not a catalytic muffler.  Since this saw is out of warranty, I plan to open the muffler & re-tune the carburetor. I have read in other posts where a 9/16" inner diameter tube was used & set to a 30 degree upward direction. Doesthis sound appropriate? What type of tube was used?  I have looked around my shop & am drawing a blank.  How long should it be sticking into the muffler & how far out past the muffler / muffler cover?  Inquiring mind wants to know.

Thanks!

Share on Facebook Share on Twitter


Offline HolmenTree

  • Nitro Hotsaw
  • *******
  • Posts: 1375
  • Karma: 192
  • Location: Manitoba Canada
Re: 338XPT California 2007
« Reply #1 on: October 23, 2013, 10:40:05 am »
you probably read my 338 posts.
I found a 9/16" outside diameter, approx. 1/2" inside piece of steel tubing,  1 1/2" long then drilled a 9/16" hole in bottom lower half of muffler and silver soldered the piece in with 1" inside and 1/2" out.. You then will have to cut a 1" hole in the plastic shroud to allow the "stinger pipe" to clear with the anti vibe movement. I left the factory outlet open the way it is.

Myself doing aerial arborist work on a climbing line, over the last few years I have burnt holes right through my safety pants with the pipe outlet , now worried one day  I may melt my synthetic climbing rope. So I'm buying a new muffler and will cut off the factory outlet cover and enlarge the pencil eraser sized hole to about 5/8" then solder a larger cover on , a cover that I can find from a pile of old mufflers I have.
Good luck.
 
Making a living with a saw since age 16.

Offline Cut4fun .

  • Administrator
  • Nitro Hotsaw
  • *******
  • Posts: 22030
  • Karma: 544
  • OHIO REDNECK Saw Repair Getter Done
    • Redneck Chainsaw Repair
Re: 338XPT California 2007
« Reply #2 on: October 23, 2013, 12:32:34 pm »
Holmentree muffler mod pics are in this thread. http://chainsawrepair.createaforum.com/husqvarna/338-xpt-husqvarna/
REDNECK Saw Repair Getter Done

Offline Oliver1655

  • 3 cube
  • *
  • Posts: 21
  • Karma: 2
  • Location: Centarl Missouri
Re: 338XPT California 2007
« Reply #3 on: October 23, 2013, 01:06:15 pm »
I appreciate the quick responses. 

Holman tree, you said you are planning to do a different muffler modification, what design did you have in mind for the deflector.  I like the idea of being able to keep the exhaust port behind the spark arresting screen.  Will this change require any changes to the muffler cover?

Thanks again for your time.

Offline HolmenTree

  • Nitro Hotsaw
  • *******
  • Posts: 1375
  • Karma: 192
  • Location: Manitoba Canada
Re: 338XPT California 2007
« Reply #4 on: October 23, 2013, 07:37:40 pm »
I appreciate the quick responses. 

Holman tree, you said you are planning to do a different muffler modification, what design did you have in mind for the deflector.  I like the idea of being able to keep the exhaust port behind the spark arresting screen.  Will this change require any changes to the muffler cover?

Thanks again for your time.
I haven't decided on a certain deflector cover yet but when working with the 338 today I can see there's not a lot of room for a much larger cover to clear the plastic shroud. From what I can see the cover has to deflect the exhaust like what the factory design does to avoid melting anything.
Once I get my new muffler in my hands and after cutting off the deflector can I see what will work. I'm thinking the deflector cover that's already on it may work fine, there's enough room underneath for a 9/16" -5/8" hole and still retain the screen. Cut it off , drill the 5/8" hole, solder cover back on, re install screen.
Making a living with a saw since age 16.

Offline Cut4fun .

  • Administrator
  • Nitro Hotsaw
  • *******
  • Posts: 22030
  • Karma: 544
  • OHIO REDNECK Saw Repair Getter Done
    • Redneck Chainsaw Repair
Re: 338XPT California 2007
« Reply #5 on: October 23, 2013, 09:32:18 pm »
I was thinking of a husky 288 deflector pointing up and out like the original deflector with the underside of original area opened  up.  Drawbacks? Might work?

 I'm not going to try it now that I am liking quite saws again.  But that was a idea that went through my pea brain.
REDNECK Saw Repair Getter Done

Offline KilliansRedLeo

  • Nitro Hotsaw
  • *******
  • Posts: 2361
  • Karma: 80
  • Location: Rochester, NY
    • RoCHusqvarna
Re: 338XPT California 2007
« Reply #6 on: October 24, 2013, 05:54:21 am »
I have used the 288 deflector and it does work but tends to collect debris when the saw is not in use. Also have used a mini-clamshell vent from a boating center, stainless steel and works well.
"When the people fear the government...you have tyranny....When the government fears the people....you have liberty"

Thomas Jefferson
1743-1826

Offline Oliver1655

  • 3 cube
  • *
  • Posts: 21
  • Karma: 2
  • Location: Centarl Missouri
Re: 338XPT California 2007
« Reply #7 on: October 24, 2013, 08:23:21 am »
Killians - Do you have a photo you could share?

Thanks.

Offline KilliansRedLeo

  • Nitro Hotsaw
  • *******
  • Posts: 2361
  • Karma: 80
  • Location: Rochester, NY
    • RoCHusqvarna
Re: 338XPT California 2007
« Reply #8 on: October 24, 2013, 11:42:42 am »
These work well
"When the people fear the government...you have tyranny....When the government fears the people....you have liberty"

Thomas Jefferson
1743-1826

Offline Oliver1655

  • 3 cube
  • *
  • Posts: 21
  • Karma: 2
  • Location: Centarl Missouri
Re: 338XPT California 2007
« Reply #9 on: October 28, 2013, 09:33:48 pm »
I went with Holmen's first method of using a steel tube in the bottom of the muffler.  I looked around my shop for a thin walled piece of steel tubing without galvanization.  I was stumped when I spied a cheap squench for an electric chainsaw. One end was 13mm & the other just a round tube.  Bingo!

Well, I couldn't find my silver soldier but had my MIG welder so I got it done. First time I welded something so thin so it isn't pretty as I had to figure out the settings as I went. 

I took it to a local saw shop where one of the owners who has done performance work on dirt bikes & saws checked the carburetor settings before I even started it up.

He is a Stihl dealer & he was impressed with difference the muffler mod made. 

I was planning to shoot a little of high temp stove black on the muffler but the weld had turned blue so I will be leaving it alone.  (The rest of the muffler is still normal color so I am not concerned with the blue weld. I figure it must just be the wire used with the MIG.)

This is not an early morning in town saw.  I still have my Jonsered CS 2139T stock muffler so I'm ok.

Thanks again for the great advice folks!

 

Related Topics

  Subject / Started by Replies Last post
0 Replies
220 Views
Last post September 17, 2013, 11:57:14 am
by KilliansRedLeo
8 Replies
414 Views
Last post January 04, 2014, 04:42:43 pm
by Cut4fun .
8 Replies
614 Views
Last post January 02, 2014, 07:56:43 pm
by Eccentric
4 Replies
252 Views
Last post November 23, 2014, 03:36:23 pm
by Cut4fun .
2 Replies
280 Views
Last post May 15, 2016, 04:59:09 am
by Eccentric
7 Replies
282 Views
Last post May 15, 2016, 04:49:22 am
by Eccentric
10 Replies
458 Views
Last post June 21, 2016, 03:18:11 pm
by Giles
2 Replies
278 Views
Last post December 26, 2016, 05:32:01 pm
by SawTroll