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post #1 of (permalink) Old 08-13-2002, 09:07 PM
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top end noise

Got a xt 550 vavles set timming dead on, I was told that my tappets are worn. I can hear a tapping sound when it idles and when I ridding it. Should I get new rocker arms for it? Or will I be o.k? Its not really loud but u can hear it over the sound of the exhaust.
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post #2 of (permalink) Old 08-13-2002, 11:13 PM
 
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Re: top end noise

hmmmm...i prolly shouldnt even say this cause it is prolly wrong or u already checked, but my freind had a suzuki were we heard a loud tapping, turns out there was no oil at all, nothing, ate a whole quart easily and more room, musta been bad, then his engine blew about couple weeks later....wut an idiot, had to ell him wut kinda quad he was ridden, well sorry to get off topic
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post #3 of (permalink) Old 08-14-2002, 06:14 AM
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Re: top end noise

Curtis is it clearly a tapping sound or rattling? Does it seem to go away when you rev the motor?
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post #4 of (permalink) Old 08-14-2002, 02:16 PM
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Re: top end noise

Keep riding it.... somthing on a bike that old "has" to be wrong with it, so if you fix that then somthing else will brake [img]images/icons/laugh.gif[/img]

But if the noise goes away when you give it gas I wouldnt worry too much about it
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post #5 of (permalink) Old 08-14-2002, 07:29 PM
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Re: top end noise

I think the valve specs were wrong.
post #6 of (permalink) Old 08-15-2002, 10:27 AM
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Re: top end noise

Maybe timing chains worn too....Souds like the bikes seat needs a new asss on it...
post #7 of (permalink) Old 08-15-2002, 11:25 AM
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Re: top end noise

ha ha no. Go it apart now. One of the exhaust cap's is cracked and is leaking oil around the crack. Also going to remove the tappet cover and try some yamaha blue silicon stuff on it. I got the valves spec from the dealer Intake .002-.004" intake and exhaust .005-.007" It probably doesn't matter but is it better to go with the smaller number or bigger? Do vavles tighten up over time which makes the tappet's loose?
post #8 of (permalink) Old 08-16-2002, 06:11 AM
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Re: top end noise

the exhaust has a larger gap due to greater heat and expansion of metal. the intake valve is cooled from the intake charge. what they are giving you is the allowable play. go with the smaller numbers
post #9 of (permalink) Old 08-24-2002, 11:10 PM
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Re: top end noise

Finally got around to adjusting the valves today. I fired here up and the noise is gone, or is very little noise. There was to much vavle clearance.
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