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nadeauracing229
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654
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11/27/2009
Location
Saratoga Springs, NY, USA
nadeauracing229
Edited Date/Time 1/19/2012 11:59am
Rebuilt our 09 kx 250f for the first time tonight 80 hrs on it.. valves havent moved once.
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FreshTopEnd
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13352
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8/16/2006
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Sacramento, CA, USA
FreshTopEnd 8/24/2010 8:13pm
8/24/2010 8:13pm
No cam, eh?
NeWskoolmxer
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10/12/2009
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Central, OH, USA
NeWskoolmxer 8/24/2010 8:27pm
8/24/2010 8:27pm
Wow What skill level is the rider no offense just wondering how much stress the engine was under?
fencepost
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9/25/2009
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T.O., CA, USA
fencepost 8/24/2010 8:35pm
8/24/2010 8:35pm Edited Date/Time 8/24/2010 8:35pm
How does a motor work without the valves moving? Must be a two stroke.......bundump! Thank you, good night.

The Shop

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NeWskoolmxer
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1346
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10/12/2009
Location
Central, OH, USA
NeWskoolmxer 8/25/2010 9:56am
8/25/2010 9:56am
nadeauracing229 wrote:
Am
Wow usually you can't even get a 450 up to those hours without breaking something.
SIMX
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633
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8/21/2006
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USA
SIMX 8/25/2010 9:59am
8/25/2010 9:59am
We had an '07 RMZ250 with well over 120 hrs and never once adjusted the valves. Always checked them and they were always within spec. Did top ends every 30 hrs, but valves were good.
newmann
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4/1/2008
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USA
newmann 8/25/2010 10:00am
8/25/2010 10:00am
The early KXF/RMZ valves were so "bulletproof " that Pro Circuit made a fortune off their replacement valves.
Cygnus
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8/15/2006
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Hanover, CO, USA
Cygnus 8/25/2010 10:12am
8/25/2010 10:12am
Shit I was hoping it was talk like a pirate day.Evil Arrrr!Cool
nadeauracing229
Profile picture for user nadeauracing229
Posts
654
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11/27/2009
Location
Saratoga Springs, NY, USA
nadeauracing229 8/25/2010 10:18am
8/25/2010 10:18am
Yea the early kxfs/rmzs were straight junk my one friend says he had a yz 250f with 250 hrs on it valves never moved but they did do pistons then the tranny went

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