2012/13 F4 1000RR Theory - MVAgusta.net
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post #1 of 45 (permalink) Old 05-06-2013, 04:21 PM Thread Starter
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2012/13 F4 1000RR Theory

In 2012 I purchased a new F4 1000RR, it runs ok now but the exhausts are always very, very sooty at the back, the bike as been in and out of the garage several times but no fault can be found. I have a theory can any body add/help?

I believe the 2012 RR was made using only two piston rings so that 201bhp could be achieved.

Does any body know how many piston rings there are in the new 2013 F4 1000RR ? I,m thinking that the 2013 model has been made using three piston rings and thats why MV say its bhp is now only 196 and I have also noticed when I have seen pictures of the exhausts on the new 2013 bike they are always very clear.

If my theory is correct the 2012 model has sooty exhausts because its burning oil.

Last edited by stephen wood; 05-30-2013 at 03:21 PM.
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post #2 of 45 (permalink) Old 05-06-2013, 06:45 PM
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Maybe to test that theory you would have to get a cylinder leak down test done and some time on the dyno with a gas analyser. A lab test of the oil might show something too.
How was the bike run in? One of our local guys swears modern bikes should be run in with mineral oil to get the rings to bed in properly. He reckons running synthetic too early causes the cylinders to get a glaze and then the rings don't do their job.
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post #3 of 45 (permalink) Old 05-06-2013, 08:39 PM
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Stephen,

How many miles on the 2012?

I ask because my 1199S burned oil all the way until 2000 miles.
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post #4 of 45 (permalink) Old 05-06-2013, 09:37 PM
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MVs have Nikasil coated cylinders and honed chrome rings

my MV uses ZERO oil, my Aprilia RSVR has Nikasil coated cylinders and uses ZERO oil

my BMW R1150GS at 58,000mi sucks oil like a Hollywood starlet chasing free white lines on a mirror

at 10,000mi it used 3/4 quart in 250mi.....LA to San Diego and back

now its down to less than 3oz/250mi

it doesn't have honed rings OR smooth bores

Stephen;
put a lambda meter on it, guaranteed its fueling, not oil

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post #5 of 45 (permalink) Old 05-07-2013, 04:45 AM
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I read that the 2012 RR only had two rings on the piston, but can't remember where I read it? anyone else find this?

As Steve says oddly the 2013 RR is 5hp down on the dyno from the 2012 model.is this MV returning to a 3 ring set up after too many ''sooty'' back end of the bike complaints?

You could always get the bike on a 4 gas analyser or even a 3 gas analyser, that may show up high hydrocarbons on the over run suggesting oil is getting past the rings?

(This reply has not been checked for punctuation, grammar, or spelling mistakes and is devoid of any big long cleverwords or condescending manner)


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post #6 of 45 (permalink) Old 05-07-2013, 05:57 AM
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Quote:
Originally Posted by theknurl View Post
my BMW R1150GS at 58,000mi sucks oil like a Hollywood starlet chasing free white lines on a mirror

LOL...I love your one liners Noel
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post #7 of 45 (permalink) Old 05-07-2013, 06:18 AM
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U r probly close to the mark... I'm betting the sotty back end is oil and not fuel (like normal) for one very good reason.. My 2010 F4 runs very clean, rarely have to clean the tips.... Until u pull a wheelie, at which point the bike sucks oil into the airbox, and without fail on the next start up will blow a heap of smoke out the exhaust, it clears up after 30 seconds or so but on that ride the tail pipes will get very sooty.... Get home clean them off and on the next ride it wont happen

It only gets sooty when it sucks oil, and i should point out its only a very small amount, just need to set up a catch can on mine.... So i would assume your problem could also b oil related
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post #8 of 45 (permalink) Old 05-07-2013, 06:33 AM
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Quote:
Originally Posted by hennessy View Post
U r probly close to the mark... I'm betting the sotty back end is oil and not fuel (like normal) for one very good reason.. My 2010 F4 runs very clean, rarely have to clean the tips.... Until u pull a wheelie, at which point the bike sucks oil into the airbox, and without fail on the next start up will blow a heap of smoke out the exhaust, it clears up after 30 seconds or so but on that ride the tail pipes will get very sooty.... Get home clean them off and on the next ride it wont happen

It only gets sooty when it sucks oil, and i should point out its only a very small amount, just need to set up a catch can on mine.... So i would assume your problem could also b oil related
MV Service bulletin says run oil at min level.

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post #9 of 45 (permalink) Old 05-07-2013, 06:34 AM
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post #10 of 45 (permalink) Old 05-07-2013, 07:40 AM
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Donsy where is the service bulletin, and when was that posted? As my bike was just serviced and if anything was slightly over full
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