• 2 Stroke Husqvarna Motorcycles Made In Italy - About 1989 to 2014
     WR = 2st Enduro & CR = 2st 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 The previous version was outdated and no longer supported.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!

250-500cc Small Pinholes in cylinder and head

T

TiJean

Husqvarna
B Class
Please check the picture and give me you opinion. Also I have 4 small holes like this in the nikasil of the cylinder. I clean, lube and grease the air filter after each ride.

Thanks,
 

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TiJean said:
Please check the picture and give me you opinion. Also I have 4 small holes like this in the nikasil of the cylinder. I clean, lube and grease the air filter after each ride.

Thanks,
Click to expand...
that is common in all 2t.:cool:
 
I run across differing levels of pits/voids in the Husky castings and this is pretty typical of all 2T's. I have certainly seen worse and also better.
 
Some of the Kawasaki KX and KDX models had these issues. Some were quite noticeable, while others with horrendously porous liners would peel after while, but those were quite extreme. What you have in that picture is barely noticeable. On a scale of 1 to 10, it would be a 1.:thumbsup:
 
If the Nikasil is coming off the cylinder then it can make pits like that in the head. Have the pits in the head been there before, or are they new?

If they are new and you have spots in the cylinder developing, you should probably have the cylinder re-plated.
 
Shoot, I wish my 300 head looked like that. After my engine failure last summer, it went from looking perfect 10 hrs previously on new top end install, to being completely covered in scarring like that. Of course my cylinder came all apart, as did the piston and powervalve.
 
MOTORHEAD said:
If the Nikasil is coming off the cylinder then it can make pits like that in the head. Have the pits in the head been there before, or are they new?

If they are new and you have spots in the cylinder developing, you should probably have the cylinder re-plated.
Click to expand...


I don't know if it was like that when I bought the bike, it's the first time that I open the top. For sure I will watch this seriously during the season.
 
Something you need to keep an eye on. As they have all said, some is not uncommon. I've machined hundreds of heads, and from the pictures that looks more like something got eaten buy your engine to me.

I guess my cup is half empty and theirs are half full. :excuseme:
 
Yeah, it looks like you lost some plating. That's what made the pits in the head.

I'm afraid I'd have to have it re-plated.
 
I don't want repeat the same thing this season. According to you, what happened? Overheat, warm-up, air leak?

Thanks for you help,
 
Honestly, I don't know for sure. I have seen this intake side seizer like condition on a number of 300's and I'm not entirely sure what the problem is.
 
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