Shit man that's some bad luck. There was a 2004 S engine on ebay last week for about £900 with no bids. Defo worth swapping out rather than repairing.
Ohh shit it sounds great, engine for £900 its very good price. Yes i know that better and easier to change the engine but if i will not find i will need to repair and i am just thinking that if i am totallz in shit maybe i will put some tuning parts in the engine ,or i will open a botlle of Whisky and i will burn up the bike and i will sing the paradise city from guns and roses)))
Yeah the second option is more easier like changing that fuckin bearing I checked everywhere but i not find an engine for normal price. In germany i find complete crashed 04 999 for 1600eur. the bearing change its not so expensive just a huge work. Koyo bearing 25eur+200eur the gaskets. I hope that inside everything will be ok , god knows why this bearing died , or its ussualy problem whit this bikes?
it a problem that is a lot more common than it should be really. never ever had a bearing failure on any GSXR or R1 ive owned or kawasaki no matter how much iv thrashed the arse of it. there was a 2005 999s engine over here for 800 UK but I dont think hed post it
The bearing is caged in plastic and that is what usually breaks up and then the balls chip. You will also need to replace the bearing housing in the casing because that will be damaged. The cases themselves can occasionally crack rendering the cases unusable. At the very least you need to replace both complete bearing sides and I would suggest you check the big end shells at the same time, that's about the minimum. When I had my engine rebuilt my gearbox had two dogs gone as well so I had to put in a spare gearbox which fortunately I had.
Yes of course that if i will have the engine out and splitted then i will check everything and i am just thinking if even all the other bearings will ok i will change it. I checked that bearing price which i 100% need to change and the original cost around 60eur but i found the same bearind from manufacturer KOYO and its only 30eur and i am sure that more then twice better then the original. I want to chceck the bearings between the cranck and the rods as well but i am nut sure that the new bearing can placed on a original crank whitout any grinding.Also if i will be in the engine totaly do you know any alternatives what shall i change if i need some extra power? I dont know from where come at S models these extra power its just came from ignition or something different in the engine as well? Thanks for your answer!
I was informed that the bearing for the cases is a Ducati only item so you might want to check to make sure that you get the right bearing. When assembling the crank in the crankcases it is essential to get the pre-load within the correct tolerances otherwise premature bearing wear can occur. Main bearing failure is often due to the factory being a bit slack in setting the correct tolerances and bearing life being shortened because of it. My 748R had only done 4,000 miles from new before bearing failure set in, it's essential to get all tolerances within specified limits to avoid further trouble which includes the crank big ends and also the main bearing cap bolts especially if you have titanium rods which you shouldn't have on a stock 998. The 998S has titanium rods I believe. The main bearing is a press fit on the crank, you should not have to machine the crank but it might be worth having it balanced if it is out. Most factory cranks are not that well in balance.
Ok, so you advice to change the bearings at cranck as well? I will check again the bearing sizes when it will out fron the engine ten i will post some photos where you can see how it goes. Between the rods and cranck i am not sure about repleacing.Sorry for a to much question bbut in my area not so many garage have a experiance with Ducati engines.
When I had my 916 engine rebuilt (following a so called build by the PO only 1k before....) it was found that the main bearings had been rotating wholesale within the crank case. This had scored - only slightly thank goodness - the cases. I was told that this could have been fatal for the cases had it been allowed to go on and was a common problem partly due to incorrect tolerances being set. The new bearings were installed with Loctite around their outer edges to help stop it happening again.
This is very true, I have seen cases where this has happened, sadly the bearings that Ducati use are not wonderful and particularly with 998/999's main bearing failure is common. It's probably the one serious weak spot with these engines and it's better to have a professional rebuild than attempt it yourself and get it wrong. It's not that easy a job getting the right pre-load and that's why I stumped up the cost of having mine done by Ducati John. If you compare the labour involved to the cost and time of having to rectify anything that goes wrong let along the cost of all the gaskets and other parts it's better to have a professional do it if you are in any doubt. In my case Ducati John actually took the engine apart while I waited just to give me a rough idea as to how much it would cost and I too was very lucky as it only needed main bearings and new big ends which were down to the shell. Here's what my big ends looked like after just 4,000 miles, some of this might be down to a negligent owner but it's certainly not good View attachment 19624 See below!!!
whit the job i cant see a problem because i also repairing motorcycles as i mentoined when i changed the engine before season but i have very poor experiance whit Ducati engines. But now i am sure that i will repleace the beearing on cranck as well. I cant open the attachment. It would be nice to see it how it looked.
That link is failing for me (i'll have to look and see if I can find pics of the grooves of my cases) Mine was at 6k miles, but i reckon it had had some track time. The bike came with a 6k rebuild bill from Sigma....yeah whatever, when we opened it up it didn't look like it had !
thank for the answer only the cams because its not difficult to repleace but i think then the timing is different as well.
Mine have around 11000km (on a speedo)which is around 6800mile and fucked. I hope when i will rebuild it will bee ok longer.
Cams and 50mm exhaust, which I think you mentioned you had. As above Ducati used to sell a conversion kit at one time. It was about £1300 - £1500 in the UK at the time. Bikenders sold one on eBay a few years ago and that's the last time I have ever seen the kit come up for sale.
just cams. drop the s cams in standard exhaust isnt 50mm. sure its 45mm ??? will have to check my original 's' exhaust
