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Dirt Bike Mods & Maintenance
XR400R Bent valves
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[QUOTE="DougTx, post: 1325222, member: 98131"] [b]Xr400r[/b] I am not getting rid of the bike. I rode it this summer and had a great time. The point about a different used bike is very well taken. Why buy into someone elses misery. I hate to say it but buying a used dirtbike is not a winning proposition I would think in most cases. I agree on the professional work part. I would love to find out the cost to farm it out. I mean if I can do it for $350 myself for rings, piston, valves, springs etc.etc. and guess, or pay the reasonable labor more for a shop to do it and get it back to me. The enjoyment of the bike being done is huge. I would ove to do it and I am not a tool idiot but I do not want to over estimate my abilities either. I am not affraid to tear it down, I have done basic engine work but the thought of machine work or percise measurements or knowing what to repalce, or missing one thing out of 6 and having to so it all over are a concern that I am trying to be realistic about it. That is why I asked about the local mechaics or shops in Dallas to get an estiamte/idea on what it would take. The idea in the video on YouTube is excellent and I am going to do that on Thursday as I am off work and I will post the link. Here is a precursory lowdown. Bike is cold... 1) I turn on fuel... and choke 2) I crack the throttle very quickly about 1/4 open and immediately closed 3) I kick it and it start on 2nd or third kick... I mean every time 4) It idles with choke and it makes a little bit of white/gray smoke for about 30 seconds and then stops. 5) I can take it off choke and it idles fine It rides and seems fine to me and not down on power BUT, I never rode this bike new so I am not sure what new feels like for comparison. I am 6'1" and 255 and it MOVES with me on it. The only thing I will tell you is that it "ticks" like tick,tick,tick.. and it sounds like a valve. It speeds up and slows down with the RPM perfectly so again I think it is a valve. Other than that I am not sure and since it may be hitting metal on metal I am not running it too much. It may just need the valves done..who knows. The mechanic at the dealer says they cannot adjust them. They tried twice and they will not adjust. One one valve it is so tight they can barely get the feeler in there. The reason he recomended the ring,piston and the rest is the fact that it is a 2002 that has been ridden and since they are already in there he said it was no more labor practically to just replace the piston and rings etc. So there you go... I am going to post up the video. Thanks guys... I would love to do it but alone, I am a little concerned I may not get it 100% right and I really want to do it and have it done right. Thanks guys Doug [/QUOTE]
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MX, SX & Off-Road Discussions
Dirt Bike Mods & Maintenance
XR400R Bent valves
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