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 The previous version was outdated and no longer supported.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

Piston / Rings Replacment Discussion

I don't plan to go that far into the motor. I'm just going to pull the head and cylinder, but if I needed a rod or crank work, Falicon would be first place I'd call.

Eurofreak, are you sure about pulling the top end while the motor's in the frame? It looks awful close.
 
yep i understand how that would do that.cheers
MOTORHEAD;28848 said:
I have a chronic dying problem with my 510 in tight, technical section when riding enduro conditions.

When it dies the starter won't turn the motor over.

That tells me that the engine is just stopping on the compression stroke, due to a lack of crank inertia to carry it through the high compression ratio, or there's some slight detonation or pre-ignition that's stopping the piston.

Regardless, either of these problem can be corrected with a reduction of compression, which can be accomplished with a thicker head gasket, base gasket, or cutting the piston top. The point is to increase the trapped volume of the cylinder head.

Husqvarna rates the 510 at 12.9:1 compression ratio, from what I can find, and I'd like to drop it to about 11:1.

What I plan to gain is a motor that will tractor down very low without stalling, runs cooler, is happier on pump gas and starts easier.
Click to expand...
 
To answer my own question, yes, you can pull the top end while it's in the frame, barely. I had to disconnect the front cam chain slider to get it off on my TE.
 
MOTORHEAD;28905 said:
I don't plan to go that far into the motor. I'm just going to pull the head and cylinder, but if I needed a rod or crank work, Falicon would be first place I'd call.

Eurofreak, are you sure about pulling the top end while the motor's in the frame? It looks awful close.
Click to expand...

I was tray to pull off cilinder head when motor is in the frame and not possible,this is on sm 510r 2007 year,:banghead:
 
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