Jack’s Husky Infused 440/460 Hybrid

[MustangMike]

Looks like a good runner Al, Congrats!!!

I have another 460 jug with broken fins if you want it, but I think the jug looks ugly (factory ports).

Jeff, generally high compression will increase fuel efficiency, but it depends on lots of other factors. In 1969 my Dad purchased a LTD with a 390 High Compression 2 bbl. The factory was trying to improve fuel efficiency with the higher compression. I think that was the only year they made it.

 

[drf256]

Can’t wait to dig in, just won’t have time or parts till the weekend.

This is how I test saws. This saw held 15 psi of pressure and 25 in Hg of vacuum.



Sorry,

Won’t have much info For a bit.

 

[EvilRoySlade]

Al, just because it’s pretty easy I’d test the carb pop off before you swap again. Also leak down on the tank vent.

 

[MustangMike]

This is how I test saws. This saw held 15 psi of pressure and 25 in Hg of vacuum.

Wow, your #s are above + beyond! I heard not to go over 10 PSI for either! Seems to work OK.

 

[Chainsaw Jim]

I hate those tank vents. I've had to replace more of those than any other type.

 

[MustangMike]

I have to disagree, I have had more problems with the 044 style vents, and they seem to be NLA. I purchased some AM 029 tank vents, and they seem to work well on an 044!!! Just have to be a little creative when you install them.

The originals are often rotted and completely non functional.

 

[Chainsaw Jim]

I have to disagree, I have had more problems with the 044 style vents, and they seem to be NLA. I purchased some AM 029 tank vents, and they seem to work well on an 044!!! Just have to be a little creative when you install them.

The originals are often rotted and completely non functional.

You're disagreeing with my experience with them? Lol

 

[Duane(Pa)]

I hate those tank vents. I've had to replace more of those than any other type.

I like em' cause they don't leak. Maybe they don't vent either? lol

Mine is on a 260, they don't suck like a bigger saw. Seems to be able to keep up...

 

[drf256]

I’ll be checking the vent for sure. It’s possible, as the saw tended to do it more after I let it warm up. I thought it was heat that changed it, but it coulda been negative tank pressure.

Judging by the way this saw drinks fuel, it’s certainly possible it’s the culprit.

I’m gonna change line and filter first. If it’s the same, I’ll try vent.

Or I’ll pop the vent first, and see if it’s instantly cured. That sounds easier.

 

[MustangMike]

You're disagreeing with my experience with them? Lol

No I am not, just reflecting my more limited experience. You have not had problems with the 044 vents? They all seem to be bad!

 

[T.Roller]

No I am not, just reflecting my more limited experience. You have not had problems with the 044 vents? They all seem to be bad!

Well when you think about how old a 044 is at this point it's not suprising that one would have a bad vent

 

[blsnelling]

If it has provisions for the little orange umbrella shaped valve, I would certainly covertt it.

 

[angelo c]

I’ll be checking the vent for sure. It’s possible, as the saw tended to do it more after I let it warm up. I thought it was heat that changed it, but it coulda been negative tank pressure.

Judging by the way this saw drinks fuel, it’s certainly possible it’s the culprit.

I’m gonna change line and filter first. If it’s the same, I’ll try vent.

Or I’ll pop the vent first, and see if it’s instantly cured. That sounds easier.

been thinking about how to back pressure or flow test a fuel filter so as to eliminate that in diagnostics. ( me being a diagnostics guy and all... ).... kindda like an early nerve conduction ..

 

[huskyboy]

been thinking about how to back pressure or flow test a fuel filter so as to eliminate that in diagnostics. ( me being a diagnostics guy and all... ).... kindda like an early nerve conduction ..

Not sure how the stihl fuel filters are but the husky ones are very easy to tell when there getting bad. The new filters are pure white. When they get bad there browish yellow.

 

[angelo c]

Not sure how the stihl fuel filters are but the husky ones are very easy to tell when there getting bad. The new filters are pure white. When they get bad there browish yellow.

well its pretty obvious the Stihl filters are superior to the icky husky filters....Im surprised the screws even stay in the husky filter

 

[huskyboy]

well its pretty obvious the Stihl filters are superior to the icky husky filters....Im surprised the screws even stay in the husky filter

I have to red loctite them in!!

 

[angelo c]

all joking aside...are there filters that flow better ?
and how would we know ?

seems we spend an enormous amount of energy to maximize fuel flow only to guess on...fuel flow
any fluid dynamics engineers out there with any suggestions...or ramblings.

 

[huskyboy]

all joking aside...are there filters that flow better ?
and how would we know ?

seems we spend an enormous amount of energy to maximize fuel flow only to guess on...fuel flow
any fluid dynamics engineers out there with any suggestions...or ramblings.

Tach the saw on the same tune with several filters. Whatever flows the most will have the most rpm.

 

[Duane(Pa)]

Tach the saw on the same tune with several filters. Whatever flows the most will have the most rpm.

Nope.

eta I think lowest flow = lean = more rpm...

 

[Chainsaw Jim]

I don't know if this is true or not but I've heard some of the stihl vents are somewhat epa restricted.

Also, the foam type filling in fuel filters is necessary for eliminating the tiny air bubbles the vibration of a running saw creates. Milling or long cuts with those things removed can burn a saw up.