Posts
126
Joined
8/18/2016
Location
PORT ORANGE, FL
US
How many hours until you guys are doing a bottom end? I am at 70ish on my '17 450. I do not ride it hard, change oil and filter every 5-6 hrs, and clean air filter every ride. I'm going to do the top end in the next week or two, should i go ahead and do the bottom at the same time?
The Shop
Going by hours is just a guide. I used to be strict on going by those hour limits but sometimes theyre rediculous. Replace it when its worn out. Stuff doesnt expire with time like food does.
My 2005 KX250 manual says new rings every 7.5 hours and new piston every 15. YIKES!
To the OP, I would go ahead and do the top end soon. When you have it open and can inspect things, you should be able to get some idea of how to proceed on the bottom end.
There is no chance you need to do one before 200h if you ride easy on the bike. Pro top 5 MX-rider that i know ran 400h on his 2016 350 Enduro.
You need a lot of bad luck if you would have benefited in retrospective to to bottom end earlier than 200-250h.
Here nor there tho
I do wish there was a easy/better way for guys to check bearing play and compare it to manufacture tolerances when it comes to checking the bottom end.
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