• 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 The previous version was outdated and no longer supported.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!

Engine rebuilding Q's - Cylinder plating and new valves?

SFTE450

SFTE450

Husqvarna
AA Class
Getting ready to rebuild my 06 TE450 and want to educate myself a bit more on the process and needs. My bike has probably close to 4K miles and over 150 hrs on it. Plan on main bearings, rod, piston/rings, timing chain, and assume new valves. I havent had the engine dissambled yet. I am considering doing much of it myself if I can (have torn other two stroke motors down, but not a 4 stroke yet).

1.) I assume that the cylinder must be recoated. Heard Millenium in WI is the best. How do you know if or when it needs to be replated? Is is just like a two stroke where the diameter of the cylinder has grown from friction beyond the factory spec? Or is there more to it?

2.) How do you know when the valves have outlasted their useful life? Beyond the obvious of they are no longer seating/sealing.

3.) Are there aftermarket valves available? Is there any advantage other than availability to using them?

I am not looking to have a performance engine built, just a reliable and long lasting one. The 450 has more than enough hit for my use.
 
hi SFTE,
I've got an 04 TE450 that got a top end freshen up at about the same milage a year ago.
I replaced the valves with stainless steel ones from Hall's (and the springs they recommend to use with them). The four valves and springs cost about the same as one genuine valve from the local (at that time) dealer! They wanted $387 per valve!
I was advised to check the valve seating before assuming it would need the seats cut and found they all had a good seat. They just had to be reshimmed.
The barrel was like new with no appreciable wear. I changed the rings however.
The parts book listed two different pistons with different ring sets and the only way to determine which piston I had and therefore which rings I needed was to disassemble it and check the brand cast into the underside. (mine had an "ART" brand which is a big Japanese OEM) Hope this helps
 
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