False Neutral?

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#1
Got a story to tell. I was coming out of a corner in third and shifted to fourth pinned. Oops it slips into a false neutral. Before I could back off the throttle if slips/shifts back into third or up to fourth not sure. But at that point I could hear lots of metal shifting, breaking, grinding, rattling around, under, in between you name it and that's was it sounded like. All I could hear was money symbols. So I roll to a stop with the clutch pulled in and the bike stalls. First thing I do is put it into neutral then I pushed down on kick starter with my hand. No compression pushed down once again no go it will no move. So please share your comments, experiences, or point me into the right direction for parts via the net. Local bike shop isn't my cup of tea.

P.S. My theory is some gears got broke and possibly sent parts to piston and blew the top end. Is that possible. Sounds to me I did every worse thing possible to my 2004 RM 250. :(
 

IndyMX

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#2
Only one way to know for sure.

Take it apart and look.

Pretty much anything anyone can tell you on here going to be a guess.
 
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#3
I doubt that pieces from the transmission would have made it into the crankcase.

From your description I assume you were power shifting: holding the throttle wide open, shifting up wihtout using the clutch.

Engine was already turning maximum RPM and when it failed to go into 4th gear the RPMs went way over the red line and the engine self destructed.

Like Indy said, it is just a guess. Pull the cylinder and take a look. You might get away with a top end rebuild but it sounds like you have have had enough damage that the case needs to to be split.

Rod
 
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#4
thanks for the feed back. I'll keep you guys updated on my pain. The motor is coming out today and I will split the case Saturday.
 
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#5
My piston looks like it exploded. The cylinder has a gauge taken out of it. I've got to split the case to get the other bits of metal out and check gears and all the other moving parts. Shifter forks? Is it possible for those to get damaged when it slipped out of neutral into third or fourth?
 
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#7
Indy: what's up with the Boston Brigade avatar?? I wouldn't go into a sports bar up there if I was you......
 
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#8
Better watch picking on Indy! You may be glad to know that you are the first person I have heard that dropped the engine and trans at the same time! Outstanding! I hope you can post some pics, and have a manual, good luck!
 

IndyMX

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#9
2strokerfun said:
Indy: what's up with the Boston Brigade avatar?? I wouldn't go into a sports bar up there if I was you......

If you don't already know, don't ask! Besides, I don't do bars..
 
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#10
case splitting

i have a 2003 suzuki rm 100 and i need to take the crank bearings out and in order to do that i have to split the tranny case. what is the best way to do that without any special tools. THANKS
 

IndyMX

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#11
tmotox100 said:
i have a 2003 suzuki rm 100 and i need to take the crank bearings out and in order to do that i have to split the tranny case. what is the best way to do that without any special tools. THANKS
Get a manual and get the proper tools.

And don't hijack other peoples threads.
 
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#13
splitting case

i dont have the manual i can probly get one but what tools should i use and how should i use them to split the case?
 

IndyMX

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#14
tmotox100 said:
i dont have the manual i can probly get one but what tools should i use and how should i use them to split the case?

I'm sure that if you were to start your own thread, there would be many people who would be able to tell you exactly what you want to know.
 
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#15
Good morning gang. I've got a picture of my piston and cylinder but not sure how to post it. On the other hand I do have a question for you guys. In my situation when the piston 'exploded' does that usually damage the crank and bearings? If they are ok should I replace the bearings any way while I'm in there cleaning the fragments? I'm planning on replacing the shifter forks hoping that will fix it from finding netrual between third and fourth. Because I don't want that to happen again. Keep in mind that was not the first time I've found netrual between third and fourth. Opions are welcome and I realize when I go into the case I will learn more.