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Old Mar 1st 2013, 02:29 PM   #11
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Originally Posted by WV 1199 View Post
The ducati website says that the valve clearance check doesnt need to be done until 24k miles. but in the owners manual it says 15k. a little confusing to say the least.
24,000 km is roughly 15,000 miles....maybe that's the confusion.

Now to brass tacks.

I operate Desert Desmo LLC, an independent Ducati service center, and have checked and adjusted as necessary literally thousands of Ducati valves. I will begin with a couple of observations about the valve trains and go from there.

From the parts diagrams it looks to me as though Ducati used two existing valve train systems on the Panigale. On the exhaust valves they used the 7mm system that has been around since the 851. This system employs two split rings to fix the closing shim to the valve stem with the opener sitting atop the stem. The intake valves use the tapered collet 6mm system used on 749S, 749R, 999R, 1098R, and 1198R. This system uses a pair of tapered collets to "lock" the closing shim to the valve stem with the opering shim sitting atop the valve stem.

The 7mm system with the old-tech wire half rings tends to drift out early in its life and then stabilize. The wire rings dimple where the shim pushes them up against the upper shoulder on the valve stem, which is where the bulk of deviation from initial adjustment occurs. If, after changing the closing shim, the mechanic puts the split rings back in the way they came out the dimple is already worn in, so they tend not to wear further. If he flips them over the new shim might not even fit very well! I mention this because unless Ducati has produced some "super split rings" that won't dimple, the first adjustment is probably the most critical adjustment for the exhaust valves. Oh...for what it's worth, I suspect Ducati used this system on the hotter exhaust valves so that they could take advantage of the thermal properties of the larger valve stem to transfer heat to the head.

The 6mm system doesn't drop out of adjustment as quickly in my VERY limited experience with it, so I won't talk about it much. The tapered collets can't dimple like the split rings, and they have a large surface area over which to spread the valve acceleration and seating loads. I've wondered on several occasions why Ducati chose not to use this system on all the valves, but they did what they did!

Anyway.....if it's my bike, I'll make sure it gets the 15k service.
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Old Mar 1st 2013, 02:30 PM   #12
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Check with Antihero see how the valves on his are doing.
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Old Mar 1st 2013, 02:38 PM   #13
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Originally Posted by WV 1199 View Post
The ducati website says that the valve clearance check doesnt need to be done until 24k miles. but in the owners manual it says 15k. a little confusing to say the least.
I think the website said 24k Km and the book says 15k mi it's the same I guess.

Anyways it would be a bummer if you go in at 15k mi and don't need it adjusted and 3k mi later and you start getting compression issues and need it you have to pay twice.
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Old Mar 1st 2013, 02:47 PM   #14
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I am getting the feeling that its good to do but not necessary or injurious to the bike... I am not due yet... but in all honesty I will not have this done... I would rather trade the bike and put the $2000 towards a new bike...
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Old Mar 1st 2013, 02:58 PM   #15
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Originally Posted by Cloner View Post
24,000 km is roughly 15,000 miles....maybe that's the confusion.

Now to brass tacks.

I operate Desert Desmo LLC, an independent Ducati service center, and have checked and adjusted as necessary literally thousands of Ducati valves. I will begin with a couple of observations about the valve trains and go from there.

From the parts diagrams it looks to me as though Ducati used two existing valve train systems on the Panigale. On the exhaust valves they used the 7mm system that has been around since the 851. This system employs two split rings to fix the closing shim to the valve stem with the opener sitting atop the stem. The intake valves use the tapered collet 6mm system used on 749S, 749R, 999R, 1098R, and 1198R. This system uses a pair of tapered collets to "lock" the closing shim to the valve stem with the opering shim sitting atop the valve stem.

The 7mm system with the old-tech wire half rings tends to drift out early in its life and then stabilize. The wire rings dimple where the shim pushes them up against the upper shoulder on the valve stem, which is where the bulk of deviation from initial adjustment occurs. If, after changing the closing shim, the mechanic puts the split rings back in the way they came out the dimple is already worn in, so they tend not to wear further. If he flips them over the new shim might not even fit very well! I mention this because unless Ducati has produced some "super split rings" that won't dimple, the first adjustment is probably the most critical adjustment for the exhaust valves. Oh...for what it's worth, I suspect Ducati used this system on the hotter exhaust valves so that they could take advantage of the thermal properties of the larger valve stem to transfer heat to the head.

The 6mm system doesn't drop out of adjustment as quickly in my VERY limited experience with it, so I won't talk about it much. The tapered collets can't dimple like the split rings, and they have a large surface area over which to spread the valve acceleration and seating loads. I've wondered on several occasions why Ducati chose not to use this system on all the valves, but they did what they did!

Anyway.....if it's my bike, I'll make sure it gets the 15k service.
I read blah, blah, blah - I would the 15K
Thanks from Mutt1979
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Old Mar 1st 2013, 03:04 PM   #16
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Originally Posted by ScrapperX View Post
I think the website said 24k Km and the book says 15k mi it's the same I guess.

Anyways it would be a bummer if you go in at 15k mi and don't need it adjusted and 3k mi later and you start getting compression issues and need it you have to pay twice.
check the website:

Ducati

on the very bottom it says 24,000m not km.
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Old Mar 1st 2013, 03:14 PM   #17
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Originally Posted by WV 1199 View Post
check the website:

Ducati

on the very bottom it says 24,000m not km.
m = meters
km = 1000 meters = 1 kilometer
mi. = miles

24000m = 24km
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Old Mar 1st 2013, 03:19 PM   #18
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Originally Posted by Ray916MN View Post
m = meters
km = 1000 meters = 1 kilometer
mi. = miles

24000m = 24km

Valve job ever 24km!! Yikes...... I will need one at work... and again when I get home...
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Old Mar 1st 2013, 03:20 PM   #19
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At 15k my valves needed no adjustment, but that doesn't mean everyone's bike won't. Keep in mind that $2k is what a dealer in LA charges. It's going to be less at dealers in, say, Austin and it's going to be even less at independent shops. While under warranty I'll be sticking with dealers.

Hey Ray!
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Old Mar 1st 2013, 03:22 PM   #20
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Originally Posted by Ray916MN View Post
m = meters
km = 1000 meters = 1 kilometer
mi. = miles

24000m = 24km
I'm pretty sure they did not mean 24km, that is ridiculous. Just above the 24k it states maintenance intervals of 7,500m which is accurate for our regular service intervals, so it is safe to say that they are referring to miles no meters
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