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jake400EX16
03-01-2011, 05:49 PM
Hey everyone, great forum by the way! I got a 2000 400EX with minor mods and love it to death..but shes getting old. When im in third or fourth and cruisin and then kinda rug it like three quarter throttle, it kind uh grinds or screatches a little. Im just wonderin what it is, how much to fix, and if it is a reasonable fix for a teenage mechanic? Thanks.

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2000 400EX
HMF Sport slip on
Twin Air Filter
Durablue axle
Durablue sprocket hub
Tag sprockets w/ RK gold chain
Lonestar bearing housing
Renthal bars
Cycra Hand guards
Holeshot XC front
Klaws on the back
Tusk nerfs
DG chassis skid
Ricochet swing arm skid
FX seat cover
DP rear brake rotor
Every bearing on the bike is brand new!
NMills
03-01-2011, 05:52 PM
screech? i can't imagine what that could be... mine never screeched.... it's reved... bogged... and idled... tho it's clicked a few times... can you describe the sound more? where do you think it's comin from???
PaRedneckRiders
03-01-2011, 05:53 PM
Where does it sound like the noise is coming from??
The motor, rear end, ???
jake400EX16
03-01-2011, 06:23 PM
the splines where my sprocket hub and axle meet are a little worn but not stripping so i dont think its that. i think it may be the bottom end.
jake400EX16
03-01-2011, 06:28 PM
It never skips or anything but maybe tranny gears?
trx400Rider
03-01-2011, 07:31 PM
Probably in the top end man.
Mine does the same. IDK about now after the crf chain and new intake valves. I havent gotten the valves yet.

But I know what your talking about, it does it when the engine is under a heavy load.
I have no idea what it is either.
jake400EX16
03-03-2011, 06:13 PM
I dont know if it is the top end cuz if the cam chain was skipping it would have already **** the bed and i dont know how the valves would have anything to do with it :/ thanks though

--------------------------------------------------

2000 400EX
HMF Sport slip on
Twin Air Filter
Durablue axle
Durablue sprocket hub
Tag sprockets w/ RK gold chain
Lonestar bearing housing
Renthal bars
Cycra Hand guards
Holeshot XC front
Klaws on the back
Tusk nerfs
DG chassis skid
Ricochet swing arm skid
FX seat cover
DP rear brake rotor
Every bearing on the bike is brand new!
crownandmonster
03-04-2011, 06:54 AM
Carrier bearings.
sheweezy
03-04-2011, 06:13 PM
might want to take a look at your crankshaft key, at the flywheel, you could be sheering it
jcs003
03-05-2011, 01:50 AM
if it is when you under a load it is probably your clutch.
jake400EX16
03-06-2011, 03:49 PM
I was thinkin clutch too my oil smells like death lol and thats an indication of a worn clutch

--------------------------------------------------

2000 400EX
HMF Sport slip on
Twin Air Filter
Durablue axle
Durablue sprocket hub
Tag sprockets w/ RK gold chain
Lonestar bearing housing
Renthal bars
Cycra Hand guards
Holeshot XC front
Klaws on the back
Tusk nerfs
DG chassis skid
Ricochet swing arm skid
FX seat cover
DP rear brake rotor
Every bearing on the bike is brand new!