Melted piston rings, gotta love it *PICS*

[Parker G 10+ year member]

Are u planning on resleeving or just boring it out?

 

[JLJunkieMX107 10+ year member]

Are u planning on resleeving or just boring it out?

Its getting a resleeve. I tried boring out my old 2 stroke and kept having overheating issues. Plus the scrapes in the cylinder wall are too deep to just bore it.

 

[Parker G 10+ year member]

overheating issues? you did rejet it didn't you.

I do find it funny when people use they're "buddies" to make a post about a stupid mistake they made.

 

[jmanpc 5,000+ posts]

How long has he been running it?

 

[JLJunkieMX107 10+ year member]

overheating issues? you did rejet it didn't you.

I do find it funny when people use they're "buddies" to make a post about a stupid mistake they made.

If you are trying to say I blew my motor up and tried to say its my friends then you are wrong. I have been racing motocross for 4 years and riding freestyle for 2. If I blew my motor I wouldnt hide behind the keyboard blaming it on someone else, thats just lame.

And yes we did rejet it. It was a 1994 RM125 and was prone to overheating even before the rebuild.

 

[Parker G 10+ year member]

I was only kidding, but thats weird did you ever try water wetter or shimming you water pump?

 

[JBGabriel 10+ year member]

Todays motocross bikes you cant just bore out easily like a bike with a cast iron liner. The cylinders are all coated with nikasil and in order to oversize you have to send it out and get it bored then replated. But it is better to get a replated cylinder than to put in a sleeve.

 

[JLJunkieMX107 10+ year member]

Todays motocross bikes you cant just bore out easily like a bike with a cast iron liner. The cylinders are all coated with nikasil and in order to oversize you have to send it out and get it bored then replated. But it is better to get a replated cylinder than to put in a sleeve.

This is true. When I did the bore job on the RM125 it was when I first started out and did not know about the nikasil.

We would rather just get it recoated but the damage to the cylinder wall is so bad that it is not an option.

 

[JLJunkieMX107 10+ year member]

[No message]

 

[89montero 10+ year member]

I was only kidding, but thats weird did you ever try water wetter or shimming you water pump?

If it's overheating you should find the reason instead of covering it with additives. My bike never overheated no matter how hard I ran. Maybe the radiators gummed up.

 

[JLJunkieMX107 10+ year member]

If it's overheating you should find the reason instead of covering it with additives. My bike never overheated no matter how hard I ran. Maybe the radiators gummed up.

The bike is long gone, this was 4 years ago. It was on its last leg anywho.