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Discussion Starter · #1 ·
SO, this is my first time diving into a Desmo engine, and admittedly I still have one set of clearances to check, but I figured I would ask here tonight before I try to get the last set check tomorrow.

Here is what I have so far on my 2000 ST2 with the 944 engine:
Vertical Cylinder:
Intake Opener: 0.04mm
Intake Closer: 0.05mm
Exhaust Opener: 0.06mm
Exhaust Closer: 0.04mm

Horizontal Cylinder:
Intake Opener: (not yet measured)
Intake Closer: (not yet measured)
Exhaust Opener: 0.12mm
Exhaust Closer: 0.08mm

The Vertical cylinder I am very happy with and have no plans to muck with it at all. Just need some new gaskets and I'll button it back up.
The Horizontal cylinder makes me wonder, though. According to Ducati's specs, the Exhaust is fine, but far too loose to meet LT Snyder's recommendation. I've got to get into the intake side tomorrow, but I find it to be at similar tolerances, should I just leave it? Or adjust the valves to tighten them up?
If the intake looks closer to the Vertical jug's numbers, I definitely adjust the exhaust... or should I?

What would you do if it were your bike?

I don't beat this thing. It's my daily commuter in the summer. But I do ride it like a SPORT-Tourer should be ridden when I can. :grin2: No track time... just highways and a few fun roads from time to time.
 

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ignore what ducati say.

make the closers as close to zero as possible, but without drag when you rotate the cam. openers 0.10mm.

your closers are loose, the horizontal openers way too tight.
 

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make the closers as close to zero as possible, but without drag when you rotate the cam.

I’m sure what you meant to say was “when you rotate the valve” but we don’t want to confuse people. :)


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You better think about what you are saying. :)




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You better think about what you are saying. :)




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oh, i'm sorry. who the fuck are you to talk over me arsehole?

i know what i'm doing, and what i'm talking about pal. you rotate the cam to assess whether or not the rocker is dragging on it. pretty fucking simple.
 

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Retired Pipe Polisher C2H6O+
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Sorry. But that just wrong. :)

You check clearances at TDC. You don’t rotate the cams. The closers should be as close to zero as possible without binding at TDC. To check this you see if you can still rotate the closer shim, or valve, with your fingers with essentially zero clearance.

The idea behind this is you can get away with zero clearance because as the valves hammer into the seats clearances on the closers will always grow larger, never tighten.

Sorry to hurt your feelings but it seems you still have a bit to learn. :)


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Discussion Starter · #9 ·
Delete Thread

Moderators: Please DELETE this thread.
There is no need for the shit/fuck-fest that's going on.
 

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Moderators: Please DELETE this thread.
There is no need for the shit/fuck-fest that's going on.
if there is more than 1 method to check valve lash then maybe its best to decide which by reading diff. opinions.life is for learning & what better forum to learn what works.these posters have far more exp. than you or I & their opinions are greatly appreciated.;)
 

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Moderators: Please DELETE this thread.
There is no need for the shit/fuck-fest that's going on.
no, there was no need for it, and i'm sorry that it went that way. hopefully the info i gave you in my first post was helpful. but it depends how you're doing it. do you have the belts on or off?
 

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Moderators: Please DELETE this thread.
There is no need for the shit/fuck-fest that's going on.
if there is more than 1 method to check valve lash then maybe its best to decide which by reading diff. opinions.life is for learning & what better forum to learn what works.these posters have far more exp. than you or I & their opinions are greatly appreciated.<img src="http://www.ducati.ms/forums/images/smilies/wink.gif" border="0" alt="" title="Wink" class="inlineimg" />
I just spent the weekend checking and adjusting the valves in my Elefant (900 2V motor). My advice is to watch Chris Kelly's YouTube videos and all will make sense and you'll see that both the respondents above are correct. IMHO
the belts off and spinning the camshaft method gets you a more surefire way of setting the closer shims correctly. Because I don't have a set of closer shims to choose from I order a slightly oversize shim which, when fitted, caused the closing rocker arm to bind on its cam. I remov it and lap it down on a stone to reach the point when the binding stops and the camshaft spins freely. It's a right royal PITA but you get 0 mm tolerance this way. (At which point the closer shims should spin without binding) Opening shims are, by comparison, easy to set!
Hope this makes sense!
 

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yes, belts on is just nuts imo. there are so many internet folklore ways to make this job way more difficult that it needs to be.

chris's video is a good start. i have the 400 engine from my ss out of the monster on a stand now, so i might get mike from mike's machines to come in and do a video of me swapping the 620 cams out and the r cams back in, which will take in the belts and valve clearances and cam timing.
 

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I don’t know about the 2 valve motor, but when I set my desmo tre motor to LT’s specs binding occurred. I always set my valve lash with belts removed.
 

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what specs did you use? i find quite a lot of st3 need a combined clearance of 0.25mm (10 thou) on the inlets or they bind. not sure why it's only some of them. some are happy with 0.18 or so.
 

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Discussion Starter · #16 ·
no, there was no need for it, and i'm sorry that it went that way. hopefully the info i gave you in my first post was helpful. but it depends how you're doing it. do you have the belts on or off?
Yes, there IS a need for it and it is YOUR FAULT, Belter, that it went that way. Your attitude and language were totally uncalled for and it pisses me off! Thanks, by the way! My eight year old was sitting on my lap when I started reading responses and I wasn't able to scroll through your vomit fast enough before he piped up saying, "Daddy, they used bad language..."

Why don't you go fuck off and shit on someone else's thread. It seems to be what you're good at! I'll take my advice from someone else!
 

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I guess there's different strokes for different folks, lets all make up and stop this nonsense. :x Folks on here will really try to help you out when you need a friend, I can vouch for that.
 
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