Ok so I picked up a project bike for cheap. 2001 monster 750. Higher miles 36k.
Previous owner said he was at the track and getting onto the straight and something "let go" as he was rolling on the throttle, bad noises, and the bike would not move at all, motor still ran though. He parked the bike and didn't touch it for two years until he just sold it to me.
Got the bike running today. Bike starts, idles and revs up great. As soon as you put the bike in gear (even with clutch lever pulled in) Bike shakes and lots of metal on metal noises. no bueno.
So thoughts on what could be wrong? Guessing going to have to split the cases for a look see? Worth tearing apart or is it not worth it?
oh and here are a few pics.
(http://i187.photobucket.com/albums/x34/jakeketchmark/924682C9-FCA3-467E-8AA5-95AB1834B692-7330-0000020C87E0E4DF_zps9d4c5d62.jpg) (http://s187.photobucket.com/user/jakeketchmark/media/924682C9-FCA3-467E-8AA5-95AB1834B692-7330-0000020C87E0E4DF_zps9d4c5d62.jpg.html)
(http://i187.photobucket.com/albums/x34/jakeketchmark/E82D71CA-5A64-4CC8-B102-67F260559252-7330-0000020C90ED5706_zpsc0fa847c.jpg) (http://s187.photobucket.com/user/jakeketchmark/media/E82D71CA-5A64-4CC8-B102-67F260559252-7330-0000020C90ED5706_zpsc0fa847c.jpg.html)
I'd pull the clutch cover and see what it looks like. To my mind the most likely point of failure on a small 2v is the clutch.
Sounds like the trans is sacked.
If you're doing all the work yourself, might be worth pulling it apart, but new bearings and parts will add up quick.
Less aggravation to just slip a new bullet in.
Quote from: Speeddog on September 22, 2013, 11:03:12 AM
Sounds like the trans is sacked.
If you're doing all the work yourself, might be worth pulling it apart, but new bearings and parts will add up quick.
Less aggravation to just slip a new bullet in.
True dat.
Lots of satisfaction doing it all yourself, but the price of that satisfaction is more $$$ and time expended. Just a matter of personal priorities. :)
At least it came with FCRs. FCRs when new probably cost more than what you paid for the bike.
There is a 750 being parted out in the parts for sale section.
Quote from: koko64 on September 22, 2013, 01:50:32 PM
At least it came with FCRs. FCRs when new probably cost more than what you paid for the bike.
There is a 750 being parted out in the parts for sale section.
Basically why I bought it. Thanks, I looked at that post but didn't see he had the engine for sale. If shipping isn't stupid expensive I'll probably just go that route. Going to be winter here soon. Need a project.
That motor in the fs section has no heads, no clutch cover, and one piston is out and needs rings. Are these things I can swap from the current motor I have without too much trouble? Sorry never done major engine work before so excuse my ignorance.
Quote from: minnesotamonster on September 22, 2013, 03:56:57 PM
That motor in the fs section has no heads, no clutch cover, and one piston is out and needs rings. Are these things I can swap from the current motor I have without too much trouble? Sorry never done major engine work before so excuse my ignorance.
You could just use the bottom end from the 'new' motor and bolt up all the other parts from your current motor.
Check this out. I put it in gear and rotated the rear wheel and this is the result.
Monster 750 (http://www.youtube.com/watch?v=Ptu4FG2u5xU#)
So this pretty much confirms it's toast, no?
Any idea what might have failed?
Yes...
ouput shaft bearing failed for sure. No way of knowing what else until you open it up.
I notice that shiny new chain that appears bow string tight. It could very well be a mis-adjusted chain caused the whole thing.
Ooof, yeah, what dp said. :-X
Usually the output bearing failure is due to too-tight chain.
There is a small chance that the bearing failed on it's own.
Not that it really makes a difference in the grand scheme.
I'm sure I've got a 5-speed gearset in a box, if you're feeling like you want to refurbish that motor.
Dp, the chain is actually extremely loose. Not sure why it looks tight in the vid.
Speeddog, I am interested in fixing it, but to be honest I'm not sure I am capable of doing it myself, although I'd like to give it a shot. Not like I could make it any worse, right? [laugh] how much for the gear set?
I had originally just bought it to sell a few of the goodies off it and make a few bucks. God knows I don't need another monster, but after hearing it run I'm not sure I can bring myself to do it. Those FCRs and termis [evil]
Quote from: minnesotamonster on September 25, 2013, 04:55:52 PM
~~~SNIP~~~
Speeddog, I am interested in fixing it, but to be honest I'm not sure I am capable of doing it myself, although I'd like to give it a shot. Not like I could make it any worse, right? [laugh] how much for the gear set?
~~~SNIP~~~
Let me pull the gearset out, make sure it's all ready to go.
It's really a lot of work to strip the motor down and rebuild.
A good winter project of course, but even with free labor the cost will be out of proportion to the end result.
At least in comparison to just slipping another bullet into it.
Especially if you put a bigger bullet in.