Hello guys !

I just bought a Suzuki ls650 boulevard s40 2011 with 14000km on it. Yesterday, before winter, I added a bit of fuel stabiliser in the tank and ran the motor for a few minutes. I wanted to revv the engine a few times before I place the bike to rest for the nexts winter months. The thing is. After giving gaz for less than a second. The engine exploded with metal parts flying around in the garage. I still don't know what happens. Oil spilled all around. Thank god nobody was hurt.

Now I know I will have to replace the engine.
Do you have any suggestions ? Is it only the ls650 that fits there or do I have other options if I want to buy a new engine?

Thank you guys !

Hard to say, I don't know much about engines. But obviously this one is broken, I'll eventually open it apart it will be an opportunity for me to learn about it a bit. I'll try to find what went wrong. I'll look for the counterbalancer

I'm in Canada. I'll call Suzuki today to see if the have replacement engines and the price.

I bought the bike 2 weeks ago. Made 50km with it. Everything went fine. But the second time I started the bike it exploded.

The guy told me he just made the oil change by a professional a few weeks before. I believe what he told me. Just by the color of the oil, I know it's not old. Haven't. Looked at the filter yet. I will contact him back just to know more details.

Wow!  RIP

Thanks for the photo.  You might wanna review this old post about a similar failure.

http://suzukisavage.com/cgi-bin/YaBB.pl?num=1593294582/0


The general consensus here was that particular failure was due to an over torqued primary drive nut.  It's a left-hand nut, easy to screw up when trying to remove it.  Another common mistake is to tighten with a rattle-wrench.  Torque wrench only on the primary drive gear nut.  The over torque results in a fractured cam drive sprocket which then leads to the balancer timing gear getting out of phase.  It's a long story.  The old post provides the gory details.

This is a failed cam drive sprocket.

If that bearing fails the result is what you currently have on your hands.  Can you take some pics of that bearing that's hanging out the left side of you case.  We would like to see if all the balls are in place and if the ball cage is missing.

I can see what looks to be a piece of heavy wire sticking out the front.  Is that in fact wire or is it a bead of sealant?

Was your engine making any sort of unusual noise?  I know you only rode it a short way but 50km should have been enough to notice any ugly cacophony.

The crack looks odd to me, may be porosity.

Are there any signs of an impact?
maybe from a crash or someone dropped the engine?

Ruttly wrote on 11/30/21 at 10:58:20:

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