Bought a KTM SuperDuke 990, but it had some issues…
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- Опубликовано: 31 июл 2024
- 2008 KTM SuperDuke 990 motorcycle restoration. I diagnosed the problem stemming from a failed water pump which is a well known issue for these LC8 engines, but this one was noticed way too late and cause all kinds of other issues. I took the engine out and completely apart so I can fix anything needed. I got the engine sorted and assembled the bike.
Hope you enjoyed the video!
Music in this video is licensed through Audiio LLC.
Music in this video 🎶
-Adam Simmons - Rain and Thunder (Instrumental)
-Kyle Church - Good life (Intstrumental)
-Kyle Church - Slow down (Instrumental)
TIMESTAMPS
00:00 Quick intro of what's coming
01:18 Start of diagnosing the problems
11:35 She purrs again but we have issues
12:37 Start disassembly of the bike
15:12 Engine is out / we can start taking it apart
26:00 The LC8 engine case is split in two
28:05 Valve job
31:56 LC8 engine assembly shall commence
45:25 LC8 engine water pump rebuild
46:40 Swingarm bearings had something to say
47:50 Engine is going back into the bike
51:45 First startup after rebuild - didn't go to plan
54:03 Chain install and riveting
55:17 Getting her back on the road 
Авто/Мото
Very nice job, it's good to see that this bike is gonna have a good owner now haha
8LITERS WAS ABSOLUTELY INSANE
Thanks a lot! It was really insane! No wonder the engine couldn’t turn over with the cylinder filled with oil… glad you enjoyed it!
Very interesting video, i own a SD990 2007 with 27000Km and i have not had any issues other than the water pump, i replaced it and that was it, im very satisfied with it and i am planning to keep it for a long time, thanks for the video and cheers from Costa Rica😊
Amazing build mate!
Very good video and thorough work. Would be good to see another video for the timing chain replacement.
Good job !! Good video and a good work on the bike. Continue like that !
Thanks so much! Really appreciate the kind comment! Glad you liked the video!
I have a used 2007 990 superduke. Gas 25 mpg economy. Drinks oil about as fast as it drinks gas. No oil leaks. The throttle is like holding back a caged predator. Love the torque of the ktms so I got a 2024 ktm 390 duke, all the torque of a ktm but better throttle response and 52mpg
Really nice and informative video. I myself own a 950 SMR which also had (among others) the issue with the waterpump. I hope you enjoy riding the 990 just as much as working om it.
Thanks so much! Yes, the bike is really fun to ride! 😎
My 2007 superduke has a lot of upgrades it was used. Full exhaust, an org rear sprocket, haven’t counted the teeth to check for o.e.m. My experience is when I let off the throttle the engine has immediate engine breaking ( engine compression.) the touchy throttle can be handled with controlled technique.
The engine breaking is so effective I basically never have to use the brakes. Cool, but strange and can get annoying. Many times I’ll ride in one gear higher sometimes to dull the engine breaking maybe 4th-6th have less severe engine breaking. A torquey beast.
I also had noticed that quite often I can ride just by engine braking into a corner. It’s certainly a fun beast!😊
Excellent video, would love you servicing my sdr. Great mechanic!
Thanks so much for your very kind comment. Much appreciated😎🏍️
Good job 👏🏻
Thanks so much for your nice comment!🏍️
Very nice job, well done! Could you please make another video on how to adjust the Throttle Position Sensor ?
Greetings from Germany 👌
Such a good motorcycle! Had 3 in total. 2008, 2012 SDR and a 2014. My favourite of all time.
That’s really awesome! Hope you never had issues with the water pump!
It’s super awesome! The only thing I wish it could do better is pillion comfort so my girlfriend would be more comfy for some longer rides. But I mean, this bike is not about that, so it’s okay.
@@volimoto The only issue I had was the rectifier for providing stable current from the generator. Had to replace that on the 2008. Had a few SMTs too and they had no issues at all. Very happy with KTM.
@b0bl00i That’s awesome! I really have gotten to like this engine through working on it. I’m considering getting either a 990 adventure or a 1090 adventure to add to the stable.🏍️
@@b0bl00i What was the realistic fuel consumption? I have a 2008 690 SMR and I'm thinking about getting an SMT
@@Jaszczur-sp2tx SMT is a great motorcycle. Good engine, fun, wheelies well and is comfortable. It's the LC8 engine with 18L (or 19L?) tank, can't remember exactly. I think you can easily get 200 Km per tank if you're not pushing to hard.
There's a sale of this bike and was looking for some details on the engine. You covered all the basis. Thanks!
Test ride it, it’s fast but very jerky at the throttle. Can be tamed but after 2 hours you are just hanging on for dear life. At first it seems very cool but the engine compression gets annoying
There are a lot of forum discussions of the jerky throttle and some have more issues than others. Mine is actually pretty good, but I just fitted the different throttle tube from the RC that has a progressive profile. There is the issue with the closed loop/open loop switch around 3000 which results in some jerkiness, but if everything else is good with the bike it shouldn’t be too bad. There’s also some option to play around with the sprocket ratios… I’m also thinking about going for a smaller front and larger back because below 50kph I can’t use 2nd gear with the original gearing.
@@michaelrieser9928 Not sure whether its the profile of V-twins in past generations that gives that vibe. Have ridden 1000cc cat bikes and you will always have to hang on to dear life. No doubt about this one.
@zergothikaify hahaha, that’s true for sure! The bike’s very torquey!
@@volimoto Nice update. I doubt that the change of gearing will solve the jerkiness but hey, it's all up to individual expertise. 2nd gear change under 3000 rpm may not click it properly. Prolly you have to rev above 4k to get that smooth change. The older they are, the stubborn they will be till you hear them sing.
Oh wow!
Oh wow!
Oh wow! 🤣
im changing timing chain tensioners soon and would like a tutorial from you. Good work!
Sure thing!
Are you only changing the tensioners themselves? Or chain and guide rails too? The tensioners you can do without much disassembly, the chains and guide rails is a bigger project. Glad you enjoyed the video!
@@volimoto im only changing the tensioners
@Lanc321 is it also a superduke? Because it can be done without taking anything apart! The only reason you could is to actually be able to measure the chain elongation/guide wear. I think on the adventure or smt you need to remove some fairings and maybe the oil tank. The removal of the oil tank helps on the superduke too, but I could do it without, it’s just a bit more annoying. I actually have some home made manual tensioner in right now because I messed up the tensioners and had to do something quick so I could join my friends for a trip… so it’s gonna be nice to get everything replaced and also back to hydraulic tensioner!
@@volimoto yes its a superduke like yours. im gonna do it this weekend. how did you mess up the tensioners? they are very expensive where I live (95$ each)
@Lanc321 I was experimenting with a small spacer because I was trying to determine if it’s camchain noise I’m having and ended up compressing the tensioners too much and bent the ring that holds the two pieces together. But they were also a bit work out anyway..
€105 here… I ended up ordering them from the US from KTM world for 45$ through a package forwarding company and with the guides together it’ll be half the cost as it would have been here even when I pay the taxes. Shipping was surprisingly cheap for a small box!
Did you actually change the valve guides or only the seals?And what was the problem in the first place,only that the previous owner put nearly 3 times the amount of oil in the engine?
The problem was that the water pump seal had failed but the PO didn’t notice and that had caused the problems with the bearings and the nasty gunk everywhere. I didn’t need to replace the valve guides, but the seals were britle so those did get replaced.
Excellent video. How many km/miles had it done?
Thanks a lot! Bike had 43000km when I bought it. 🏍️
My 990 just gave out, how much did this run you and you make it look easy lol
I think this entire rebuild was almost a 1000€, not counting of course my work. Thanks a lot for your comment!
What kind of a digital torque wrench was that?
Hi! It’s an SW-Stahl 03926L Digital torque adapter. Works quite nicely. It’s 6-30Nm and there’s also the higher torque option: 03927L which is 27-135Nm.
@@volimoto Thanks! Have you tested accuracy of it? Right now I'm using standard cheap "clicky" torque wrenches calibrated with a fishing scale. It's a bit scary sometimes.
@Jaszczur-sp2tx I haven’t actually tested the accuracy, but I’ll try to remember to do so and report back to you. I’m away from home for the next week, though.
Btw! I’m planning on buying a small 1/4” clicky torque wrench, 2-26nm for some of these jobs because although the digital adapter is great, there are situations when it simply cannot fit due to it being so tall.
@@Jaszczur-sp2tx
There's nothing wrong with a "clicky" torque wrench - Norbar has some of the best in the business.
It's really a matter of how well the mechanism is designed and manufactured.
Digital is great for a workshop where time is money and there could be noise and distractions, so a big digital display and a loud bleep is better than trying to read the markings, then listening and feeling for the click.