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January 14th, 2021, 11:49 PM   #1
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2008 FE 550 top end removal for piston ring inspection

Hi,

Iím interested in checking the condition of my piston / rings. Will the top end come off the cylinder with the engine in situ or do I have to plan on removing the engine?

The space looks pretty cramped, but maybe removing the rad frees up enough room?

Thanks.

C
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January 15th, 2021, 01:34 AM   #2
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I get this quite a lot from half mechanics.

the rings outlast the pistons on a Husaberg and any modern bike for that matter. basically, the piston wares until it tilts. when it tilts enough it no longer has contact with the thrust-face walls and that is when you get smoking.

regards

Taffy
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January 15th, 2021, 06:36 AM   #3
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Thanks. That’s good to know.

But my question is around removal of the top end assembly. Will the long bolts clear the frame? Will the head clear the frame? Or do I have to remove the entire engine just to remove the head-and if worn, the piston?

Much appreciated.
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January 15th, 2021, 07:29 AM   #4
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Originally Posted by canadius View Post
Thanks. Thatís good to know.

But my question is around removal of the top end assembly. Will the long bolts clear the frame? Will the head clear the frame? Or do I have to remove the entire engine just to remove the head-and if worn, the piston?

Much appreciated.
Most definitely. You have to remove the engine from the frame. That part is like 5% of the work, so there is no reason to try to skip it.

Your Husaberg has a sleeve type cylinder, hence the only way to remove/inspect the piston is to split the cases.

There are a few videos on youtube showing assembly/disassembly.
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January 15th, 2021, 12:13 PM   #5
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Originally Posted by tomasnj View Post
Most definitely. You have to remove the engine from the frame. That part is like 5% of the work, so there is no reason to try to skip it.

Your Husaberg has a sleeve type cylinder, hence the only way to remove/inspect the piston is to split the cases.

There are a few videos on youtube showing assembly/disassembly.
Thanks. I've seen this video - can't see the other parts in his channel



This one's good, though it's tricky given the language (Finnish?) - but it's a start. Any specific piston replacement vids would be great.

thanks,

C
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January 15th, 2021, 12:41 PM   #6
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ha! ha! that is our own Mats Clementz of SWEDEN, he'd be mortified to be called a Finn! I suppose you could have called him something worse. he has a thread running with 812 replies right near this one. Just buy a flywheel puller and get on with it.

Taffy
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January 15th, 2021, 01:26 PM   #7
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Actually, I forgot to add the 2nd video - the one I was referring to that wasn't in English was this one:



slightly older, but helpful.

I assumed Finnish from the name (Enduro Muki) but whatever.
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