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Old January 21st, 2013, 09:30 AM   #11
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My Tri still smokes after 1400, getting a bit pissed.
Only a bit???? I would be very pissed off...
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Old January 21st, 2013, 09:46 AM   #12
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My Tri still smokes after 1400, getting a bit pissed.
Same for my S.
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Old January 21st, 2013, 09:57 AM   #13
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I always make sure I'm sitting on the bike looking forward when starting the engine......never seen any smoke

Jokes aside; more rings is more friction, more friction is more heat, more wear and less power. Since this is a "cold engine issue" only, I wouldn't loose a minute of sleep over it. On top of that, engine failures seem to be scarce and very few forum members have complained about badly running motors.

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Old January 21st, 2013, 04:41 PM   #14
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Mine still smokes at 3500 miles. Its a very early S model, possibly the first in the road in the UK. However, I've worked out the exact circumstances under which it happens...

If you start the bike and run it for a short while, not long enough for it to fully warm the engine before stopping it again, then the bike will smoke on the next start. Try it if you have a 2012 model.

My guess is that oil seaps past the rings when the bike is stopped before the large pistons have fully expanded to seal the bores, as they do at normal operating temprature.

I guess adding another ring would help with this, but its not a problem in normal operation, other than getting my leg pulled by other non-Ducati owners who just love to point out Ducati faults.

I'm with Xbox, no way would I want the engine rebuilt on a dealers bench to cure a minor irratation. If it starts drinking oil big time, then I'll have a new engine please. That's what my warranty is for.
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Old January 21st, 2013, 04:54 PM   #15
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Originally Posted by PaddockStand View Post
Mine still smokes at 3500 miles. Its a very early S model, possibly the first in the road in the UK. However, I've worked out the exact circumstances under which it happens...

If you start the bike and run it for a short while, not long enough for it to fully warm the engine before stopping it again, then the bike will smoke on the next start. Try it if you have a 2012 model.

My guess is that oil seaps past the rings when the bike is stopped before the large pistons have fully expanded to seal the bores, as they do at normal operating temprature.

I guess adding another ring would help with this, but its not a problem in normal operation, other than getting my leg pulled by other non-Ducati owners who just love to point out Ducati faults.

I'm with Xbox, no way would I want the engine rebuilt on a dealers bench to cure a minor irratation. If it starts drinking oil big time, then I'll have a new engine please. That's what my warranty is for.
OMG, this happened to me! I ran it to get it uphill for my last (I thought) winter picture, then when I started it to put it away, it smoked! Brief puff as you say. It is an extremely rare occurance, so I just ignore it.
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Old January 21st, 2013, 05:50 PM   #16
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Mine smoked when bran new. Now with 2500 on the clock it doesn't. One time after sitting for 7 or 10 days it smoked on start up but that's it.
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Old January 21st, 2013, 08:45 PM   #17
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Quote:
Originally Posted by PaddockStand View Post
Mine still smokes at 3500 miles. Its a very early S model, possibly the first in the road in the UK. However, I've worked out the exact circumstances under which it happens...

If you start the bike and run it for a short while, not long enough for it to fully warm the engine before stopping it again, then the bike will smoke on the next start. Try it if you have a 2012 model.
Exactly. I mentioned this previously, you can make it puff by running the engine, without riding.... like when your showing off in the garage for friends.

I think this is why Ducati came out with the start and ride ride-off immediately recommendation. The quicker you get the temp up, the quicker the rings will expand.
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Old January 22nd, 2013, 03:28 AM   #18
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I am part of a team that design's engines. I would not want my engine taken apart and a ring added. It would mean lots of reassembly risks. We also remanufacture engines and always when remanufacturing we would have the bores reworked and have all new piston rings. I read someone say its a cold only issue so I am not planning to disturb my engine to solve this minor item
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Old January 22nd, 2013, 05:18 AM   #19
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My 1199 only smoked twice at start up, but after it's first 55 lap track day it never smoked again.
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Old January 22nd, 2013, 07:15 AM   #20
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Hot off the press!
This was straight from my "nameless source" at Ducati after sending him this link. Hope it clears up some of the confusion?

Incorrect. 2013 did not add an additional ring but a new ring. 12120561A is for 2012. 12120561B if for 2013. They will cut in faster so people stop whining about the smoking. All that is needed is to run the shit out the bike and it's broken in!

Rings produce no drag on compression because the gases are trying to push past the seal. Blow by, and it's the reason to gas port a piston so the pressure on the head of the piston with match that behind the ring helping to make a better seal. Porting is not affective long term because the ports get full of debris from combustion and plug causing an unbalanced condition or cocking of the piston in its' stroke causing the skirt to drag. Skirt drag kills HP.

Rings only touch on down suck stroke and in that stroke the throttle is closed it creates a vacuum which causes the rings to pull out and drag the wall of the cylinder. It's why the worth thing you can do to the engine is very high rpm and part to no throttle. That vacuum can be so large that it can suck oil past the valve stem and burn. And it's the reason on the dyno you can determine easily if you have a bad ring set or bad valve stem seal causing your smoking. Full throttle smoking, rings. Full throttle then shut off throttle smoking valve stem seal.
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