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Wondering what everyone is getting out of their 1000 for miles before rebuilding. I have a 2007 f1000 with 8000 miles and never been touched internally yet.
 

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Probably one of the stoutest motors ever, but but pistons are still susceptible to metal fatigue overtime. I would put pistons in it. Not that guys certainly haven’t gone to 10k before, probably even longer.
 

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what is the compression at??
, as I never just go off miles or hours, I base rebuilds on a few other things besides miles and hours, like
starting with a compression test, and then, evaluate t how hard a motor was used or abused, and what fluids were used along its life!
big difference iMO in wear and tear on a motor being run at max or worked hard all the time, as to one that was run a little more mild !
how the operator also, runs things from cold start up , some folks start and hammer away, some let things warm up first or go easy first few miles,
all adds up to wear and tear IMO!

SO, IMO< there is no real set rule on WHEN to rebuild,
start with compression test and go from there !~
 

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That’s 100% correct, but since he’s at 8k, that means it’s been taken care of/warmed up/etc. or it wouldn’t have made it that far.
I’ve found more than one motor to have excellent compression (as new), but noticed that the exhaust side skirt was cracked (or even half missing) while servicing the exhaust valves.
 
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