Valve adjustment problems. Can you help? - Ducati Monster Forums: Ducati Monster Motorcycle Forum
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post #1 of 14 (permalink) Old 03-26-2006, 04:25 PM Thread Starter
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Valve adjustment problems. Can you help?

My bike has 7600miles and I don't believe the previous owner did the 6k service. I also have a tapping metal sound coming from what seems to be the valve area on the horizontal cylinder so I believe I gotta adjust my valves.* So I am trying to measure my clearances and I am getting some odd numbers (pretty damn small clearances?).

I first try to measure my vertical cylinder..I align it at TDC and check through the spark plug hole to make sure. On both intake and exhaust I get .06 mm (that's right not inches) for both loaded and unloaded gaps. I'm thinking hmm..ok maybe thats good since there's no difference. Must be the horizontal as I thought.

I then go to meausre my horizontal cylinder at TDC and when I remove the cover to get to my shims, loads of oil empties from the housing. Holy crap! never read about that one so something seems horribly wrong. I'm confused though that the spark plug on the horizontal cylinder shows absolutely no burning oil in the cylinder. Ok so maybe the oil is supposed to be there?

The horizontal clearances BTW are .06 and .05mm for both loaded and unloaded..sooo where is the tapping noise coming from? And good god whats with all the oil??!

Thanks for your help and advice.
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post #2 of 14 (permalink) Old 03-26-2006, 05:23 PM
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Re: Valve adjustment problems. Can you help?

Your difference between loaded and unloaded seems to be too small. That difference is your actual gap of the valve closer. I like to keep them at about 0,05 mm but not less because it gets too hard to measure properly (ducati allows from 0,03 to 0,20 mm for the 2V). Are you sure you are loading the closer with enough pressure? And there are two TDC's on a four stroke, one with open and one with closed valves. Make sure you have the right one! (sorry if this is obvious to you)
The oil is supposed to be there

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post #3 of 14 (permalink) Old 03-26-2006, 05:46 PM
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Re: Valve adjustment problems. Can you help?

The oil puddles in the valve cover & always dumps like that. I try to remember to keep a paper cup handy unless there are people watching when I forget & dump oul all over my tools.

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post #4 of 14 (permalink) Old 03-26-2006, 06:12 PM Thread Starter
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Re: Valve adjustment problems. Can you help?

Ahah..well thats a relief! You know the feeling you get when you're doing something new to your ducati and you think you got all your research done...and wham didn't expect that one.

Anyways, yeah I know of the 2 different tdc's but I figured I had the right ones since I aligned the marks a whole handfull of times and only during some were I able to fit my feelers between... but that doesn't mean I'm doing it right* Yeh come to think of it I'll have to give this another try. This time with lights... or outside.. or with a rearstand
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post #5 of 14 (permalink) Old 03-26-2006, 07:15 PM Thread Starter
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Re: Valve adjustment problems. Can you help?

Oh yeah so any hints on the clicking noise? I think it's my valves..but is it? And clicking doesn't indicate anything real bad right? Just want my mind at ease before I get to the valve service.
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post #6 of 14 (permalink) Old 03-26-2006, 08:51 PM
 
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Re: Valve adjustment problems. Can you help?

all ducs, and most 4 stroke engines have some tick naturally. Are you sure it is excessive? I can hear my valves at idle easily, even over the clutch and exhuast.

you can run your closer clearance to 0, and I think Chris K even tries to do that. But, your open clearance seems a little small at .05 or .06 mm

http://www.ducatitech.com/2v/maint/adjust/index.html

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post #7 of 14 (permalink) Old 03-26-2006, 10:29 PM
 
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Re: Valve adjustment problems. Can you help?

Quote:
Originally Posted by opwierde
Your difference between loaded and unloaded seems to be too small. That difference is your actual gap of the valve closer. I like to keep them at about 0,05 mm but not less because it gets too hard to measure properly (ducati allows from 0,03* to 0,20 mm for the 2V).
Its easier to get this one right if you remove the belts. What you want is a closer gap smaller than you can measure, but which doesn't cause any binding when you turn the cam over by hand. It's _really_ easy to feel "too tight" closers as you turn the belts over - I found I could "fine tune" the closer shims down to the point where a couple of dozen "laps" of my oilstone made a difference (and I was amused to notice my micrometer shows me the difference between a "warmed up" freshly ground shim, and a cooling down shim!)

big
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post #8 of 14 (permalink) Old 03-27-2006, 10:04 AM Thread Starter
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Re: Valve adjustment problems. Can you help?

Hm well the only reason I was asking about the clicking..and decided to do my valves was because my bud's got a '04 620 and It sounds quite different (mine clicking being one amongst a whole list...) But if you guys think its not a problem
Quote:
I can hear my valves at idle easily, even over the clutch and exhuast
Sounds about like mine.

And just as a sanity check for me; about the 2 TDCs I assume I'm gonna measure when the valves are closed and the spring tension is off the closer and that im not gonna be able to fit my gauges between the opener and stem if the valves are open since there's spring tension? I'm mainly asking that since I've got clearance measurements (although small) I should have the right TDC?

Thanks guys. You've all been friggin cool
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post #9 of 14 (permalink) Old 03-27-2006, 09:20 PM
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Re: Valve adjustment problems. Can you help?

Hell with all the noise a Ducati makes How do you localize it to valves. But I'll tell you after this last $11ty billion dollar bill for valve "inspection" I hope to never take mine back to the Ducati shop for better or worse. Just for that Mathis thingy.

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post #10 of 14 (permalink) Old 03-29-2006, 01:13 AM
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Re: Valve adjustment problems. Can you help?

Quote:
Originally Posted by bigiain
I was amused to notice my micrometer shows me the difference between a "warmed up" freshly ground shim, and a cooling down shim!

big
Me too. I would cool my shims down to a consistent temperature by placing them in my mouth under my tongue for a few seconds. The saliva seemed to get them close to the same temperature every time. Almost burned my tongue a few times though. Just don't swallow them.

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