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Author Topic: Porting for a Husqvarna 262XP?  (Read 1752 times)

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Offline KilliansRedLeo

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Porting for a Husqvarna 262XP?
« on: November 07, 2013, 11:00:57 am »
Got a very nice one-owner 262XP off a guy in Missouri, should be here next week. Saw runs but has a problem with choke and throttle linkage. Those are no big deal as I have OEM replacement parts on hand. I own several of these saws but have never felt that a port job was necessary as they run very well out of the box.

Just wondering what others thought about porting options for the 262XP?
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Offline adam32

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Re: Porting for a Husqvarna 262XP?
« Reply #1 on: November 07, 2013, 12:26:01 pm »
Every saw needs ported :)
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Offline farmboy

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Re: Porting for a Husqvarna 262XP?
« Reply #2 on: November 07, 2013, 12:45:15 pm »
Quote from: adam32 on November 07, 2013, 12:26:01 pm
Every saw needs ported :)
They are pretty much max from the factory.  You can widen the intake and ex. a little and set squish.  That's all I do to mine (down to 5 261/262 conversions).  Hard to improve on a factory hot rod. ;D  Biggest thing is a bigger carb HDA87 NLA is 16.06 venturi  IIRC.  The bigger carb really helps them. 
Shep
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Offline KilliansRedLeo

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Re: Porting for a Husqvarna 262XP?
« Reply #3 on: November 07, 2013, 12:49:43 pm »
Quote from: farmboy on November 07, 2013, 12:45:15 pm
Quote from: adam32 on November 07, 2013, 12:26:01 pm
Every saw needs ported :)
They are pretty much max from the factory.  You can widen the intake and ex. a little and set squish.  That's all I do to mine.  Hard to improve on a factory hot rod. ;D
Shep

Thanks Bill that is pretty much my thoughts as well. I will put up some pictures when it arrives.
Tim

A HDA-87 would be the way to go if I had one. Should you come across one that you don't need for yourself, PM me I will buy it off you! ::)
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Offline KilliansRedLeo

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Re: Porting for a Husqvarna 262XP?
« Reply #4 on: November 07, 2013, 01:29:42 pm »
IIRC the HDA 87 was replaced by the HDA 120/120-1. Does anyone know what the specs changes were  between the 87 and 120?
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Offline farmboy

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Re: Porting for a Husqvarna 262XP?
« Reply #5 on: November 07, 2013, 01:33:28 pm »
I've been looking for one for several years with no luck.  But if I do you will be first in line.   I've thought about a HDA 137 or 164 16.66 venturi from Poulan 330-3750 change shafts if needed but these carbs use a impulse line from top of carb to impulse barb in the crankcase.  You could drill crankcase and install impulse port.  If I can get caught up I may try it on the last 261 I picked up.  I'll have it apart anyway. 
Quote from: KilliansRedLeo on November 07, 2013, 01:29:42 pm
IIRC the HDA 87 was replaced by the HDA 120/120-1. Does anyone know what the specs changes were  between the 87 and 120?
120 is 15.08 same as 144 IIRC.
Shep
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Offline SawTroll

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Re: Porting for a Husqvarna 262XP?
« Reply #6 on: November 07, 2013, 08:29:32 pm »
Quote from: KilliansRedLeo on November 07, 2013, 01:29:42 pm
IIRC the HDA 87 was replaced by the HDA 120/120-1. Does anyone know what the specs changes were  between the 87 and 120?
As I remember it, it was quite early - likely around 1991.

The venturi went down from 16.67mm to 15.08mm, which is a lot.

I don't know how much it is possible to open the venturi of a HDA-120, but I do know that it isn't just a question of boring it out - you need to know exactly what you do!
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Offline jmester

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Re: Porting for a Husqvarna 262XP?
« Reply #7 on: November 07, 2013, 08:47:04 pm »
Walbro list a HDA-87 with a16.66mm Venturi, and a 120 and 144 both with a 15.08mm Venturi. Would a carb from a 268 or 272 work for what you guys are looking for. That should be a Tillotson HS-260A, it has a Venturi of 17.46mm
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Offline jmester

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Re: Porting for a Husqvarna 262XP?
« Reply #8 on: November 07, 2013, 08:48:36 pm »
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Offline farmboy

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Re: Porting for a Husqvarna 262XP?
« Reply #9 on: November 07, 2013, 10:28:39 pm »
Quote from: Jason Mester on November 07, 2013, 08:47:04 pm
Walbro list a HDA-87 with a16.66mm Venturi, and a 120 and 144 both with a 15.08mm Venturi. Would a carb from a 268 or 272 work for what you guys are looking for. That should be a Tillotson HS-260A, it has a Venturi of 17.46mm
HS260 has canted mounting screws, HDA is level you would have to make an intake block and linkage problems.
Shep
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