Top end SECOND UPDATE Pics!

wow ok guys thats alot of info. And the piston did break on the exhaust side! and come to think of it i did hear a little bit of clinking in the exhause when i took it out. ill look at it better tomarow.

how far is MA from MD? lol

Ok so heres what i got from all that:
-if im gonna go in the case, get manuels, be patient, maybe not do it at all.
-take a couple shots and drink a six pack!



Could i take the case apart and look for metal and such, and if i dont see any, close it back up and rebuild the top end?


Also, when i was messing around with the bike, i tried to go through the gears and it only went up a gear like once, then it would go up 4 times, then down, then the next time it would only go up twice. Any idea what could cause that?
 
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hahahaha....we were just messing around...STAY SOBER FOr THIS ONE !!!..lol, listen hunter dan, seperating your case insnt such a hard job as it sounds, and after your done you will know allot more about how your engine works. just do a little research on it first...reading these post is a good start. and just make sure ya have the right tools..gaskets and take your time. pay close attention to how it all comes apart so youll get it back together right..and because its your first time if you know a buddy that has a little experience it wouldnt hurt to work with hin to get ya started and answer questions, if not than every one in this forum will be more than happy to walk you through the project im sure. good luck.....
Dan B
 
and u defently want to take pics of all ur work as u do it, that way u can always look back if u get lost, heres a good tip, when u remove the bolts for the stator and the case bolts, sketch out a diagram of the side case on a peice of cardboard and punch each bolt threw it, where it belongs on the sketch, ALL THE CASE BOLTS ARE DIFFERENT SIZES, and its a pain trying to get em right if they r all mixed up
 
can i just pop open the case to see if i see anything, and if i dont can i just close it up and rebuild the top?

ok and i just went out and shook the pipe around and there is what sounds like small pieces of metal in there but not alot of it

Also, the engine is not locked up. About a month ago my dad went down and tried to start it for sdome reason, and he pull started it and it started but when you tried to drive away it would die.

is that good?
 
can someone perhaps give me a litst of tools im gonna need to do the case?

i have a socket and a wrench set
 
torque wrench (most manuals tel lyou exactly what foot pound of torque is required for every nut and bolt on your engine in thelittle "exploded" diagrams)

i use a 1/4 ich ratchet with a screw bit tip set, im not sure what number tip it is but i use the bigger philips bit so its snug in the screws.

wrench/socket set

flywheel puller..unless you can get a local shop to take it off for you

and also do exactly what blasterfreek said..he just gave you some very usefull tips.

couple screwdrivers to pry the case apart (very slowly and evenly !!)

new gasket set for sure ,and possibly what ever else is wore out in the case (piston obviously and maybe bearings etc...)
 
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You can't just close it back up once you've opened it!! You'll have to re-seal the case halves. And, if you've gone through the trouble of splitting the case halves....you might as well put some new bottom end bearings in while you're down there (especially considering what happened to the piston!). Even if the bearings looked fine (which in your case would be surprising), you might as well replace the bearings you can while you're in there.

Now, if it started and ran in this condition....like I said before, you MAY be able to get away without messing with the bottom end. It is definitely unlikely and I don't think anyone here, myself included, could in good conscience tell you to just forget it and put the top end back together. If you did it that way, the chances of the bottom end failing in the near future would be high....but you're the one who's closest to the quad and making the observations, so ultimately you've got to make the call. However, it is potentially a possibility that if you made sure nothing was down in the crank (I'm using bottom end and crank(case) interchangeably here) and then just threw the top end back together that you could end up being fine.

Tools: flywheel puller, wooden work bench (or you can make a cradle out of 2x4s for the motor to sit in) good quality screwdrivers (I hate how yamaha uses phillips heads!), an impact driver (for those hard to remove screws. The type of impact driver where you hit the back with a hammer and it turns the screw), shop manual, lots of rags, camera, cardboard to lay out all the screws you'll be removing (like said above, this is not the type of job you just throw all the bolts into a can and remember where they go later), rubber mallet, Some use an actual case splitter....although I've been successful using a rubber mallet, lots of care, and wooden wedges for prying the case apart. Oh, and a torque wrench!!

That's what I can think of at the moment. Oh, you'll want a good clean dedicated work space. If you don't have a shed or barn or garage to do this in, you can pull the motor outside and work on the motor in a basement shop or (don't tell your mother) in the kitchen!! CAUTION: mothers usually aren't to thrilled to come home and find a motor being taken apart on the kitchen counter!!

The only thing that I'm worried about walking you through this is breaking bolts off in the motor. I've done it a million times. Luckily, I learned how to break the bolts off on side case covers and such, where removing the bolt wasn't so bad. If you break a bolt that holds the cases together, that wouldn't be good!! There is a feel to tightening the bolts..sometimes before there all the way tight they'll bind up and can break. IMO, it takes a few times of breaking these bolts to get the feel for when they're gonna break and know when to back off....but hopefully you won't run into this problem.
 
WOW. thats alot of info!

Ok so ive read the manual about engine diss assembly a couple of times and dang that looks hard (preolly easier than it looks) but if i pull it apart, can i visually inspect it (bearings and such) with out dissassembling it totally?


xj when i was taking the top end apart i had everything layed out on the kitchen counter and my mom came in and just shook her head and laughed.
 
also something else u will need is a few cans of carb or brake cleaner to clean some things up. a scraper or razor blade to clean gasket surfaces and the good old yamabond or threebond liquid gasket sealer and the phillips head is a #3 a good tip with the stupid stuck screw is to stick the screw driver in the screw push down hard and slightly turn towards loosenin and with ya other hand smack the top of the screw driver kind hard with a hammer or better get that lil impact driver someone said earlyer it makes it much easier.
i think the hardest part is the shift forks and drum but thats just me i hated that part lol good luck
oh and if u find a friend or someone that is willing to help and claims to know what hes doin let em help but i learned from other peoples mistakes if they grab a pair of pliers or vise grips and goes after a bolt tell em to back away LOL cus they are just a bullshiter no one that actually knows what they are doin is gonna use pliers or visegrips on something that dont need it like a stripped bolt or something just my 2 cents