After reviewing a lot of posts and other helpful info I have a question. With the top ends on 250 and 450 four stroke racing dirtdikes lasting 30 to 60 hrs before requiring top end surgery, how long would one expect a K6 to live, on a mix of `spirited street` and 4-6 track excursions per year, without requiring some expensive repairs? I am aware that the singles noted live at max load and high rpm all the time under race conditions, but trail riding with them only adds about twice the service life vs full race conditions. My last bike, A TLR1000, showed noticable loss of compression with less than 25K miles. Thnx for your time. Rob
top-end longevity...
bliffe
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dont be surprised about this response since you have seen comp loss on your TL, i have seen this on the older gen 1k's as well and i think it has a lot to do with how the bike was broken in and just keep in mind that some motors just are not as strong as others, at around 15K there was a significant loss on the dyno and the owner rode the bike rarely to the limit so its not rare... leakdown was perfect however after taking his motor apart and replacing the rings and pistons he was back up and running so that is why i always tell my buddies to break it in hard and let the rings seat in right...
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