Oil condition after rebuild

[super noober]

Thanks for the post 370, also if i run through any water more than 6 inches deep it takes on water in the sight glass. in your opinion is this all leaning towards the crank seal?

personally i think you either have a crack in your case or a blown clutch cover gasket. the crank seal is on the inside.

 

[Miller_Time]

Okey doke, ill look into it. thanks a bunch super noober, 370, and lt. you guys are great.

 

[370]

you definaley have some wierd sh*t goin on there dude.. but it taking on water is not a crank seal issue.. does it leak oil? seems to me to pull water in something else would have a tendancy to leak out.. espeically if your only in water 6in deep and it;s doin it.. thats a new one to me.. but i'll help ya out anyway i can for sure.

 

[Blaster200boy]

Yeah it made a couple loud slapping noises so i immediatly killed it and thats when i found the gas in the crankcase. After the oil change though havent heard it since, still has tons of compression and runs fine.

Thats the has in your crankcase exploding. always remember to shut your gas off after each use

 

[Tim Lutz]

Ive got an 89 blaster that i had bored 1mm over from stock, with a wsm piston. The work was done at a shop ive gone to for years so i really trust the work they perform. However ive changed the oil probly 4 times since the rebuild(probly 15 hours of ride time total), and every time there are more and more shavings in the oil. Looks like silver glitter to me. Is this normal for a blaster to take this long to break in or is something else possibly going on? Thanks in advance guys.

Did your mechanic split the cases for any reason? Their are a couple snap rings, that if left off, will cause the gears to ride against the aluminum cases. You could have a busted clutch friction plate. When I got my Blaster the kick starter clip spring (not the return spring) had come off and taken a couple of trips around the gears. This caused no damage but did leave some metal oil in the oil. Also another really weird thing with my Blaster, when I pulled my motor down I noticed that the counter balance had a tight spot in it's rotation. I figured some of the kicker clip had made it's way up to that area but when I reassembled my cases it still had the tight spot. I took it back apart, cleaned off all the fresh yamabond and found the counter balance was simply hitting the inside of the cases. Don't know how long it had been like this or why or what kind of noise it would of made. The bike had a melted piston when I got it. The supporting bearings were in fine shape so I just shaved a little off the cases and actually had to take a little off the counter balance also.

Bottom line is you should pull your clutch cover and check it out.