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#146838 - 01/10/20 02:41 PM Re: 2006 xt225 cylinder [Re: Dancastxt225]
Az4x4 Offline
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Registered: 08/18/08
Posts: 4395
Loc: Heber/Overgaard, AZ

Judging by the photos replacing the cylinder together with a new piston and rings seems the best course - depending on what the rest of the engine looks like.
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"Never let your sense of morals get in the way of doing what's right." Isaac Asimov's 100th birthday 01/02/2020

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#146844 - 01/10/20 07:55 PM Re: 2006 xt225 cylinder [Re: Dancastxt225]
peejman Offline
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That's pretty ugly. I'd see what sort of oversized pistons are available and if they are big enough to clean up the damage.
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This shall pass, be still and know.
2006 XT225, UNI filter, ProTaper bars, MSR handguards, SS front brake line, Shinko 241's.

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#146853 - 01/11/20 05:19 PM Re: 2006 xt225 cylinder [Re: Dancastxt225]
Paul49 Offline
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Registered: 07/22/11
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Loc: High Peak, UK
That looks a bugga don't it. Looks like somebody has (badly) honed the barrel with all those scratches in it. Has a circlip caused those gouges or a broken ring?

You said:
"The gouge was about half a cm deep maybe 1 cm I didnít measure,"

half cm is like 3/16". Did you mean 0.5mm? Like (20thou) 0.020"

Best get it measured properly to see if an overbore will clean it up.

This looks dodgy:
Piston kits for £25 on ebay, I guess they are Chinese, has anybody tried them? I paid that for a set of oem rings.
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1958 Ariel 650 FH, 2014 Tiger Sport1050, 1995 XT225 Serow, Tiger 800 XRx.

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#146855 - 01/11/20 06:18 PM Re: 2006 xt225 cylinder [Re: Paul49]
Az4x4 Offline
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Registered: 08/18/08
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Loc: Heber/Overgaard, AZ

Originally Posted By: Paul49
.....This looks dodgy:
Piston kits for £25 on ebay, I guess they are Chinese, has anybody tried them? I paid that for a set of oem rings..

Trying to clean up that damaged cylinder bore and fit an oversize piston to it would be expensive to say the least, even if it could be done and he uses Chinese parts. It'll be interesting following this project as he decides on his course of action.

My best guess at this point is a replacement cylinder with a new piston and rings. Chinese manufacturers are making engines and transmissions for major bike producers like Yamaha and Honda. So cost wise it seems smart to go with Chinese engine parts from a top line manufacturer.

We'll see soon enough what he decides..
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"Never let your sense of morals get in the way of doing what's right." Isaac Asimov's 100th birthday 01/02/2020

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#146856 - 01/11/20 08:04 PM Re: 2006 xt225 cylinder [Re: Dancastxt225]
Paul49 Offline
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Registered: 07/22/11
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Loc: High Peak, UK
Not had an engine re-bored since the early 70's can't remember what it cost then, is it pricey nowadays. I would have thought cheaper than a new barrel. Mebbe Chinese parts/engine is the cheapest way forward.

I was surprised when I stripped my engine to find the bore was fine so I got away with just new rings.

Need to find the cause so it don't happen again.
_________________________
1958 Ariel 650 FH, 2014 Tiger Sport1050, 1995 XT225 Serow, Tiger 800 XRx.

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#146882 - 01/15/20 08:16 PM Re: 2006 xt225 cylinder [Re: Paul49]
Az4x4 Offline
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Registered: 08/18/08
Posts: 4395
Loc: Heber/Overgaard, AZ

Originally Posted By: Paul49
..Not had an engine re-bored since the early 70's can't remember what it cost then, is it pricey nowadays.....

No idea what re-boring costs anymore. Used to be common back in the day. Some still go that route. Like you though it's been a lot of years since I knew anyone who had an engine re-bored, motorcycle or otherwise. My mechanic uncle, WAY back in the day, re-bored and re-built a lot of old automobile engines, bringing them back to full serviceability. Seems there's less and less call for that as far as most are concerned these days.
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"Never let your sense of morals get in the way of doing what's right." Isaac Asimov's 100th birthday 01/02/2020

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