scrached cylinder wall

G

gregy133

Member

Feb 4, 2010

22

0

• Jun 20, 2010

• #1

my crank on my 01 rm 125 went bad and sent bearing caseing up and now i have a small scratch on each side of my cylinder and two small chips on my intake ports so can i just hone it some and run it or do i need a new cylinder because i dont have money for a new one but dont want to wasts a new piston quickly

 

whenfoxforks-ruled

Old MX Racer

~SPONSOR~

Oct 19, 2006

8,129

2

Merrillville,Indiana

• Jun 20, 2010

• #2

Does a magnet stick to the bore of your cylinder? Vintage Bob

 

H

helio lucas

~SPONSOR~

Jun 20, 2007

1,020

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• Jun 21, 2010

• #3

you have to repair the cylinder. i have run bikes with scratched cylinders BUT i prefer not to do it, just have no choice. one of them was the last race and the need for some points...
do what bob say and if it´s plated (the magnet don´t stick), have it replated.

 

G

gregy133

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Feb 4, 2010

22

0

• Jun 21, 2010

• Thread starter
• #4

the magnet does stick lightly to the cylinder wall

 

whenfoxforks-ruled

Old MX Racer

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Oct 19, 2006

8,129

2

Merrillville,Indiana

• Jun 21, 2010

• #5

Can you get some pics of the cylinder up? The intake port with out the reed? The magnet kinda sticks makes me wonder if you have a sleeve in there already?

 

G

gregy133

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Feb 4, 2010

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0

• Jun 22, 2010

• Thread starter
• #6

from what i see i dont think i have a sleeve in it and relooking at it from the shop it has two small chips on the top side of the intake ports and one visable scratch that you can feel with your finger buy my nail dont catch it im thinking im going to hit it with a scotch pad and get a piston and run it untill i get the money or find a cheaper cylinder around

 

whenfoxforks-ruled

Old MX Racer

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Oct 19, 2006

8,129

2

Merrillville,Indiana

• Jun 23, 2010

• #7

I sure would not waste a new ring in that bore. But,

 

J

_JOE_

~SPONSOR~

May 10, 2007

4,697

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• Jun 24, 2010

• #8

Yeah, you're just going to chew up a piston and ring. A replate is a couple hundred bucks and will save you the hundred or so to replace the piston again......

 

G

gregy133

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Feb 4, 2010

22

0

• Jun 24, 2010

• Thread starter
• #9

ya ill have to replate it i guess

 

whenfoxforks-ruled

Old MX Racer

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Oct 19, 2006

8,129

2

Merrillville,Indiana

• Jun 24, 2010

• #10

gregy133 said:

ya ill have to replate it i guess

Click to expand...

Its not like the end of the world, just a few hundred bucks. In the long run the best choice. I still do not see a sleeve as an even alternative, way sub par at best.