• 4 Stroke Husqvarna Motorcycles Made In Italy - About 1989 to 2014
     TE = 4st Enduro & TC = 4st Cross

  • Hi everyone,

    As you all know, Coffee (Dean) passed away a couple of years ago. I am Dean's ex-wife's husband and happen to have spent my career in tech. Over the years, I occasionally helped Dean with various tech issues.

    When he passed, I worked with his kids to gather the necessary credentials to keep this site running. Since then (and for however long they worked with Coffee), Woodschick and Dirtdame have been maintaining the site and covering the costs. Without their hard work and financial support, CafeHusky would have been lost.

    Over the past couple of weeks, I’ve been working to migrate the site to a free cloud compute instance so that Woodschick and Dirtdame no longer have to fund it. At the same time, I’ve updated the site to a current version of XenForo (the discussion software it runs on). The previous version was outdated and no longer supported.

    Unfortunately, the new software version doesn’t support importing the old site’s styles, so for now, you’ll see the XenForo default style. This may change over time.

    Coffee didn’t document the work he did on the site, so I’ve been digging through the old setup to understand how everything was running. There may still be things I’ve missed. One known issue is that email functionality is not yet working on the new site, but I hope to resolve this over time.

    Thanks for your patience and support!

449/511 airbox mods

Rear, I believe you don't have a dead horse to beat. Though like you I have come to my own conclusions on
this, TC airbox and use the horn. Not a K&N fan...just my opinion, for my purposes.
 
I drilled holes in the stock lid and left the horn in. Instead of all the dirt going to one side of the filter it flowed evenly across the filter. My thought was even though more dirt came in the box the intake vacuum was spread across the filter better giving better filtration.
 
To me, the throttle is good...if any "quicker", I'd be on my arse damn sight sooner. Hasn't happened yet. But I'd rather roll it on under control, rather than thinkin' WWWTTTFFF. Cripes, to me this has power to burn. I don't race, too old for that chit...:cheers:
 
I drilled my lid with 12 extra 13mm holes around the top and down the side to replicate a TC cover also removed the horn and washed the oil out of the filter - can't get it any freer flowing than that
 
Tinken said:
What was the purpose of removing the horn?
Click to expand...

It was recommended by a guy that raced his TC 449 - he gained 1.5 hp on the dyno with it removed.
The inlet horn / snorkel is very close to the side cover and by taking it out it lets more air in
 
nonferrous said:
It was recommended by a guy that raced his TC 449 - he gained 1.5 hp on the dyno with it removed.
The inlet horn / snorkel is very close to the side cover and by taking it out it lets more air in
Click to expand...
That's great if you ride your bike around at 9000 rpm. Even removing 6mm off the 310's air horn drastically changes it's bottom end.
 
Tinken said:
That's great if you ride your bike around at 9000 rpm. Even removing 6mm off the 310's air horn drastically changes it's bottom end.
Click to expand...


Are we talking about the same thing here? There is a snorkel on the side of the airbox. I think the item up for debate is the inlet horn that is shaped similar to a velocity stack.
 
I'm talking about the velocity stack that attaches to the throttle body. On your mod, I believe you removed this and traded it for a red angled silicon tube. On the end of the velocity stack is an air horn. The shape and length from the tip of that horn to where it meets with the throttle body has been tuned in order to increase air speeds at low rpm. Removing this may yield more air, but air velocity at low rpm will suffer.
 
Tinken said:
I'm talking about the velocity stack that attaches to the throttle body. On your mod, I believe you removed this and traded it for a red angled silicon tube. On the end of the velocity stack is an air horn. The shape and length from the tip of that horn to where it meets with the throttle body has been tuned in order to increase air speeds at low rpm. Removing this may yield more air, but air velocity at low rpm will suffer.
Click to expand...


Yes, I know the part exactly. Meant to quote nonferrous. He said about it the part being on the side of the airbox, so I think he is talking about the snorkel and not the velocity stack. Let's start calling it that.

Yes, on my mod I did remove that because it was non-reinforced and I feel it will collapse with the weight of the K&N. I may purchase another one if it is cheap enough and see if I can dyno on the same day.
 
I apologize for the confusion then. That little snorkle is of no consequence really. I left mine on because after installing the TC airbox, most of the bottle neck restriction had disappeared.
 
MoleValley-20131211-00164_zps17cf333e.jpg



New lid fitted last night.
 
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