Need suggestion about Cylinder

Blamir · May 23, 2015

My bike is FE450 2005 at 200hours. I have some pictures about cylinder and need some suggestions about replace or not.

There are some stretches in cylinder but i feel a bit deep at only one stretch. Can i use the bike at this situation?

Thanks.

bushmechanic · May 23, 2015

yes you can use it Blamir

obviously its not new but it was recently working right?

things to check for are ridges at the top and bottom of the stroke as seen at the top of the cylinder in your pic and also if the bore is round.

FE350 · May 24, 2015

After clean up and reassembly maybe lube the wall a little as it is hard to see how deep it is and you don't want to risk any kind of hang up on the rings at start up.

It actually doesn't look bad for 200 hours in my eyes

Bushy is a smart cookie by what I read so I would trust his advise.

Rainerio · May 24, 2015

Check compression with a tester then add a little oil check compression again and see the difference. How if it's small or not at all different. I would think you should be OK. If you access to camera that you can put thru plug hole to check it from time to time it. Just to keep you happy. By the way is that normal for piston to be that clean ??

Blamir · May 25, 2015

bushmechanic said:
yes you can use it Blamir

obviously its not new but it was recently working right?

things to check for are ridges at the top and bottom of the stroke as seen at the top of the cylinder in your pic and also if the bore is round.

Thanks for reply bushe. I could not understand what you mean

sorry for week english. I did not measure cylinder becouse it is a bit long and hard to remove it. Just checked with my hand and eyes

. bike was working good before.

FE350 said:
After clean up and reassembly maybe lube the wall a little as it is hard to see how deep it is and you don't want to risk any kind of hang up on the rings at start up.

It actually doesn't look bad for 200 hours in my eyes

Bushy is a smart cookie by what I read so I would trust his advise.

I spent a bit much money so dont want to buy cylinder too.

Rainerio said:
Check compression with a tester then add a little oil check compression again and see the difference. How if it's small or not at all different. I would think you should be OK. If you access to camera that you can put thru plug hole to check it from time to time it. Just to keep you happy. By the way is that normal for piston to be that clean ??

I cleaned piston. There was some carbons.

bushmechanic · May 25, 2015

Sorry Blamir

it looks ok from here but i can't measure it or feel the scratches

if the bike had no problems like blowing smoke, using lots of oil etc then it will probably be good for another 1 - 200 hrs

mars · May 25, 2015

Blamir,

Is there any metal chips in the oil. I had a one time on my 2001 FC550, metal chips in the oil. Counter balance bearing failed. I hope its not your problem, just somethong to look at before next ride. can be just dirt passing the air filter.

Mars
2001 FC550
KTM 250 SX 2010
O yes 5HP mine bike

Blamir · May 26, 2015

mars said:
Blamir,

Is there any metal chips in the oil. I had a one time on my 2001 FC550, metal chips in the oil. Counter balance bearing failed. I hope its not your problem, just somethong to look at before next ride. can be just dirt passing the air filter.

Mars
2001 FC550
KTM 250 SX 2010
O yes 5HP mine bike

Yes i saw some metals on magnet but they are like mud and a little in the oil filter. Poeople say it is normal. ??

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Need suggestion about Cylinder

Blamir

bushmechanic

FE350

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Blamir

bushmechanic

mars

Blamir

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