KX100 Top End

J

jackflack44

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May 3, 2008

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• Sep 9, 2008

• #1

Im looking to do a top end on my KX who should i buy the piston from? :whoa:

 

R

RM85rider123

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Oct 28, 2007

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• Sep 9, 2008

• #2

there are pretty much 2 big brands for dirtbike pistons, and topends. 1.wiseco 2.vertex.
I'd go with wiseco, because they're forged pistons. A kit from wiseco would probably cost $110-$120.

 

J

jackflack44

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May 3, 2008

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• Sep 9, 2008

• Thread starter
• #3

wow that was quick! :cool: how hard is it ive never done anything like that before?

 

R

RM85rider123

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• Sep 9, 2008

• #4

jackflack44 said:

wow that was quick! :cool: how hard is it ive never done anything like that before?

Click to expand...

It's not that hard at all. If you don't have a manual, then get one. You should have assistance the first time you do a top end though, just in case you get stumped on it.

 

J

jackflack44

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• #5

ok, so should i try motosport?

 

R

RM85rider123

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• #6

they should have a kit. If not, you can order one from your local shop.

 

J

_JOE_

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• Sep 9, 2008

• #7

I've used Motosport several times, always a good experience. I agree with RM85rider, you should have a manual and a helper.

 

J

jackflack44

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• #8

ok thx, so any other tipS?

 

B

bonitz

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Aug 20, 2008

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• Sep 9, 2008

• #9

I did a top end job on my friends old kx100 back in '02. It is still running strong to this day. I opted for the wiseco kit aswell. Never had any engine failures using wiseco in small engines. It's a fairly straight foward process. If you ever need an online guide to do it i could help you.

 

J

jackflack44

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May 3, 2008

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• #10

ok thx ill be sure to just pop back in this thread if i need help ;)

 

J

_JOE_

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• Sep 9, 2008

• #11

Cool. Pics help if you have a prob.

 

C

Chili

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Apr 9, 2002

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• Sep 9, 2008

• #12

jackflack44 said:

ok thx, so any other tipS?

Click to expand...

Check part # 92043 it's the pin the KIPS valve actuates on and it's worth about $3. Not replacing it and not noticing it was worn to the point of breaking when I did the top end on my kids KX80 cost me another top end during break in.

 

J

jackflack44

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May 3, 2008

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• #13

Chili said:

Check part # 92043 it's the pin the KIPS valve actuates on and it's worth about $3. Not replacing it and not noticing it was worn to the point of breaking when I did the top end on my kids KX80 cost me another top end during break in.

Click to expand...

Ok thanks, i don't have the money for 2 top ends :nener:

 

B

Blink-182

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Feb 2, 2008

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• Sep 19, 2008

• #14

where in texas are you located? if ya need any help ill be there in a jiffy