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Discussion Starter #1
Well, recently got a 450, no top end, and the Piston is beat to crap, and some metal shaving got into the Bottom end, was going to flush the motor out, and removed the Piston from the rod, And my dumb ass managed to drop a c clip in the bottom end, I really REALLY don't want to pull the case apart, any ideas to get the thing out, and how hard is it to split the case on one of these?

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Sounds like more of a stroke of luck. That engine needs to be completely rebuilt and I think if you just put a top end on it, you would regret it due to having to tear it apart again in the near future. If you do a total rebuild, it takes away all the worries for many times to come.
 

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Discussion Starter #3
Sounds like more of a stroke of luck. That engine needs to be completely rebuilt and I think if you just put a top end on it, you would regret it due to having to tear it apart again in the near future. If you do a total rebuild, it takes away all the worries for many times to come.
The bottom end is in good shape,vtge shavings that got in it were from the Piston when previous owner took the top end off


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A flush wont get the shavings out, I'd split the case and clean it out properly.
exactly, and who know's what else is bad
splitting cases is the ONLY way to get inside clean and not ruin a NEW top end you just did!

so, its worth it to take the added time and do it right, done right you will KNOW you have a long lasting motor
half A$$ things and you could be down again real soon

HOWEVER if your a deep mud water riding guy, then, I gather your only goal is to get it to GO< and will be doing motor work again soon any how, so!

to many, NOT splitting cases and just flushing is all you's like to do, to save on down time, as sooner or later you'
ll have water in motor again any how LOL
and top ends are common PM"S


but as they say done once RIGHT< really isn;t any more time than fixing the top end 2-3 times!
but depends on use of atv I guess! as to what is better for you

or if your only fixing to sell to some sucker too I guess>?
 

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Discussion Starter #6
exactly, and who know's what else is bad

splitting cases is the ONLY way to get inside clean and not ruin a NEW top end you just did!



so, its worth it to take the added time and do it right, done right you will KNOW you have a long lasting motor

half A$$ things and you could be down again real soon



HOWEVER if your a deep mud water riding guy, then, I gather your only goal is to get it to GO< and will be doing motor work again soon any how, so!



to many, NOT splitting cases and just flushing is all you's like to do, to save on down time, as sooner or later you'

ll have water in motor again any how LOL

and top ends are common PM"S





but as they say done once RIGHT< really isn;t any more time than fixing the top end 2-3 times!

but depends on use of atv I guess! as to what is better for you



or if your only fixing to sell to some sucker too I guess>?
I am into the water riding but I'd like my stuff to be right you know what I mean, what's the best way to split the case? Take the front cover off? If I pull the case I'm gonna wash the inside with kerosene,would a quick wash through hurt my clutch?


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If you don't have time to do it right, when will you have time to do it over?

I have that in my signature on skype at work. "If you don't have time to do it right, you must have time to do it again".

Some ppl have some of the most unusual stuff on theirs.
 

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if you do not do it right you will most likely have what i call a grenade motor, it may run like heII but make a big bang most likely sooner than later...
 

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Discussion Starter #14
if you do not do it right you will most likely have what i call a grenade motor, it may run like heII but make a big bang most likely sooner than later...
Why would it do that if I get everything out? The bottom end is in good shape minus the clip I dropped lol, probably gonna mess with it sometime this week

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if you do not do it right you will most likely have what i call a grenade motor, it may run like heII but make a big bang most likely sooner than later...

Some refer to that as a "hillary" motor.
 

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Have you tried fishing around in there with a small magnet yet? should be an area that can be reached that way, otherwise shoot some compressed air in and see what happens....what do you have to lose??
 

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Discussion Starter #17
Have you tried fishing around in there with a small magnet yet? should be an area that can be reached that way, otherwise shoot some compressed air in and see what happens....what do you have to lose??
That's probably what I'm gonna do, didn't think about compressed air


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If you don't retrieve it, I bet the gears will chew it up if you run the motor - then a magnetic drain plug and the oil filter will catch the bits (if you're lucky)! One time I changed the oil on a Can Am for a guy and found a one inch long drywall/wood type screw stuck to the magnetic drain plug, and it still looked like new!
 

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Discussion Starter #19
If you don't retrieve it, I bet the gears will chew it up if you run the motor - then a magnetic drain plug and the oil filter will catch the bits (if you're lucky)! One time I changed the oil on a Can Am for a guy and found a one inch long drywall/wood type screw stuck to the magnetic drain plug, and it still looked like new!
Definitely gonna get it out before I run the engine, don't wanna ruin my new bike in my first ride lol

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only way to truly clean it out is to split the case, if you do not want to do that then just hope you are a really lucky person because there is no way to clean the bottom end right without splitting the case. a magnet will do nothing with a bunch of aluminum from the piston in the lower end and compressed air will most likely just push it farther in the cases.
 
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