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Old 06-05-2012, 01:30 PM   #31
Renegade_Azzy
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Joined: May 2011
Location: SW PA
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I had a similar issue on my GS500. The screws holding my timing plate in place came loose, letting the timing advance in odd ways.

Didnt figure it out unitl they both came loose and the timing jumped 90 degrees . Bike didnt like that, at 40mph on a back road. luckily, i happened to stop in the driveway of a real nice fellow with a well stocked garage
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Old 11-17-2012, 02:14 PM   #32
2aroundtheworld
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Well, I think it's time for an update on this thread.

As I mentioned before, James spent countless hours trying to figure out the issue - well he was right.

I brought my KTM back to Tahoe a couple weeks ago and I finally had the time to take the engine out and look at it more carefully. I redid a leak down test just to be sure and there was enough air going out of the exhaust port to blow my hair. Well, the little I have left.

Turns out there is a pretty significant hole in the exhaust valve! I haven't removed the head yet but you can see it quite cleary from the exhaust port.

So that would probably explain the problem he has been having. I have no clue what may have caused that. The bike only has about 13000 miles on it.

So now the question is - what's next...

Do I spend more time learning about this engine, remove both heads and send them over somewhere?

Do I send the whole engine and let someone more qualified take over?

Does anyone know of a good shop in the Bay Area or Reno area?

thank you - I hate when threads don't have a conclusion so hopefully this may be useful to someone one day.

Christian

2aroundtheworld screwed with this post 11-17-2012 at 02:28 PM
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Old 11-17-2012, 02:28 PM   #33
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Old 11-21-2012, 10:12 AM   #34
brents347
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Chester at Nevada Motorcycle Specialties in Reno, NV. is a great tech. He is one of the owners, they have had the shop for something like 30+ years, and he has a lot of LC8 experience. If you want to take it to a shop, this is a good, local start.
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Old 04-07-2013, 12:30 AM   #35
2aroundtheworld
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Time for some closure on this thread, almost a year later....

I am glad to report that the bike is back together and I have been enjoying some great rides with it!

I ended sending the engine to the KTM dealer in Reno and getting new valves/rings on both cylinders. about $900 of parts, $600 of labors and then taxes...ouch.

I put it back together and it had never ran that well. I really missed it!





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