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I intended to leave this motor alone as a spare it's never been touched. All stock but ran well.
In process of draining coolant I noticed alot of black crap in coolant. I thought uh oh cracked sleeve. So I now had to figure out what problem in motor was. Easy. Someone forgot to put the impellar washer on. Impellar was hitting valvecover, seal and head. Factory aluminum cover though! Yes.
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Well since its this far I cant stop myself from checking cams. Wow! Bonus time! FX400 cams all in good shape. Even oil on buckets after 1 year of sitting imagine that.
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Only disappointment is the dreaded aluminum retainers. Those will get tossed along with valves and springs. Send head to Timbo for sticky bucket fix and maybe some porting since its there!
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Look how clean this motor is. Former owner really did his oil and filter changes religously. Even clutch basket was spotless.
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Since I am this far might as well go all the way. Even though clean evidence pointed to alot of hrs on motor. Wires were wearing into side cover even. That takes time to do. Timing chain confirms it. Lot of time on this motor. DID chain which is best, is wore. Kinked. Junk.
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Happen to notice the rust sparkplug? That hasnt been changed in years. Was running really good though. Check out piston and sleeve! An Asso still good to go with new rings and a hone on sleeve. Is a deep dimple sleeve but dimple was at intake and survived. Will try that again.
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Finally the crank. Yes! It's a billet one. I don't know yet if rod is chewed by ripsaw stock bearing but I kind of think so since I can see cage is all polished off. Won't know till I split crank.
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Well all told this all took 4.5 hrs. I timed myself started with a fully assembled running bike. Not bad at all. I am sure assembly will be much more but now I know what I have. Glad I dug in. Was quite a few loose bolts. None fell out but many were 1 finger tight including the famous 1 o'clock crankplate bolt. Nothing a REAL Loctite job won't fix. Got mine ready Niel?
