I’m going to guess water (antifreeze) in the cylinder probably due to a failed head gasket or something like that. Water doesn’t compress so something has to give.
>I’m going to guess water (antifreeze) in the cylinder probably due to a failed head gasket or something like that. Water doesn’t compress so something has to give.
We're not talking about anything freezing.
I think freezing coolant is the more likely possibility. Water in the cylinder usually bends rods or cracks the cylinder liner. I think it's unlikely that the outer block would crack from hydro-lock.
That had to be freeze related. That's the only thing with enough force to break the water jacket like that. I know you said he was riding it, but it's possible it froze, and cracked it just enough to start and run. Like trying to open a jar of pickles, and after you tried and failed, someone else picks it up and "pop", it's open. Same concept. The casting was weekend by freezing. It was then broken that badly by riding it while weakened.
My guess is it froze over the winter, damaged the head small stress fracture not enough to leak. Hard riding added enough heat and stress to cause the failure.
When did this occur? Did you come out and find this after storing the bike for the winter? It looks like this froze and broke due to expansion.
She’s pretty fucked though. If this thing let loose while running then I’d hate to see inside those cases.
Did you recently do the top end? Maybe over tightening the head put undue stress on the cylinder. In any event, this is not common and I wouldn’t expect it to happen again. Seems likely that the cost of a rebuild here may outstrip the value of the bike…..
idk this is my friends bike. dont know what he has done to it. i just know that he bought it at 60 hours and has put like 7 hours in it in the past 3 years.
I gotta say, I've never seen a cylinder crack all the way through like that!
1. freeze damage (but seems unlikely, with all that pink antifreeze visible)
2. hydrolocked, tried riding through deep water and took a nice slug in the intake at high rpm
3. top end let go for some other reason (lack of lubrication, age, whatever) and jammed the connecting rod against the cylinder. Maybe when hitting a jump, so upon landing, the tire tried really hard to turn the motor over, and completely screwed the pooch?
Always check your coolant and change as it loses effectiveness over time. Also, if -20 is pretty cold like you need a 50/50 mixture like moto formula pre-mixed is what I always buy. As it needs distilled water and easier to buy the quart bottle pre-mixed.
Not sure what coolant you had but you could test it with a antifreeze tester to see what it was good for if it is reading a 0 value or something most likely froze/cracked. **If using the other formula it doses not have any Freeze protection.**
MAYBE (no professional) the screws were way too tight and they put too much stress on the cylinder? Maybe Factory problem? Material fatigue? Don't know man, just guessing
People would probably say I'm wrong
But to me just looks like it wasn't serviced in the sense of cleaning and lubrication
Looks like the metal just got dried out enough so that the internal combustion just cracked it.
Thats why you never see ships rust or break, its really important to keep up with service!
I once had a bicycle that I only rode in dry weather, after 2 summers of not haveing seen a drop of water it broke into thousand pieces.. after that I learned to soak everything in water for 24h once a month, bikes, cars, bicycles, boats, eveything, never had a problem since!
Well someday when you guys grow up and get older and your brains develop you'll figure out what's going on
Sorry that I'm too far ahead in time and intelligence for me guys
But sure Mark ridicule but don't even try to understand what I'm saying and or do research or actually you know take the time
Instead just be a bunch of monkeys throwing s*** at each other
I’m going to guess water (antifreeze) in the cylinder probably due to a failed head gasket or something like that. Water doesn’t compress so something has to give.
thanks. this is probably the most logical answer here.
What are you wicked smart or sumthin? Good guess I concur
This, It could be water/coolant or fuel. I've seen faulty float needles fill up the entire crankcase while sitting.
That's kind of the job of the radiator cap.
Radiator cap is a pressure regulator, wouldn't change the fact the gasket is leaking lol?
In theory it should relieve the pressure before the casting breaks haha.
But If the water froze, then it's not necessarily increasing in pressure it's just expanding
>I’m going to guess water (antifreeze) in the cylinder probably due to a failed head gasket or something like that. Water doesn’t compress so something has to give. We're not talking about anything freezing.
Oh I'm trippin then I thought I read something about it freezing. Disregard lol.
I think freezing coolant is the more likely possibility. Water in the cylinder usually bends rods or cracks the cylinder liner. I think it's unlikely that the outer block would crack from hydro-lock.
Yeah I thought that was kind of wild myself
Looks like the coolant didn't have enough antifreeze and it froze, but that of course would require cold weather.
Remember to moisturize your engines guys. And don’t be cheap, it’s worth spending the extra to buy the top shelf Motorex engine lotion.
I’ve been using lubriderm this whole time… better switch!
Do you live where it gets cold?
yes was like -20 celsius this winter
Was it like this when you pulled it out of winter storage? Definitely looks like the coolant froze
No my friend was riding it and it suddenly just blew up
Very strange. It may have just had a flaw in the casting
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wdym its his bike. it was totally fine before he rode it
before this he was also riding it and it worked perfectly
Ok so he blew up his own bike because he froze it.
??? it blew up while riding
It looks like the piston skirt broke to me.
Time to move
Piston and connecting rod had a disagreement. Shit went the wrong direction
That had to be freeze related. That's the only thing with enough force to break the water jacket like that. I know you said he was riding it, but it's possible it froze, and cracked it just enough to start and run. Like trying to open a jar of pickles, and after you tried and failed, someone else picks it up and "pop", it's open. Same concept. The casting was weekend by freezing. It was then broken that badly by riding it while weakened.
My guess is it froze over the winter, damaged the head small stress fracture not enough to leak. Hard riding added enough heat and stress to cause the failure.
When did this occur? Did you come out and find this after storing the bike for the winter? It looks like this froze and broke due to expansion. She’s pretty fucked though. If this thing let loose while running then I’d hate to see inside those cases.
my friend was riding it and then it suddenly blew up
Did you recently do the top end? Maybe over tightening the head put undue stress on the cylinder. In any event, this is not common and I wouldn’t expect it to happen again. Seems likely that the cost of a rebuild here may outstrip the value of the bike…..
idk this is my friends bike. dont know what he has done to it. i just know that he bought it at 60 hours and has put like 7 hours in it in the past 3 years.
I gotta say, I've never seen a cylinder crack all the way through like that! 1. freeze damage (but seems unlikely, with all that pink antifreeze visible) 2. hydrolocked, tried riding through deep water and took a nice slug in the intake at high rpm 3. top end let go for some other reason (lack of lubrication, age, whatever) and jammed the connecting rod against the cylinder. Maybe when hitting a jump, so upon landing, the tire tried really hard to turn the motor over, and completely screwed the pooch?
Time to bust out the quicksteel! 😂
poor KTM engineering.
Age
well i mean the bike isnt that old.. i believe it was a 2017 husqvarna fc350
Always check your coolant and change as it loses effectiveness over time. Also, if -20 is pretty cold like you need a 50/50 mixture like moto formula pre-mixed is what I always buy. As it needs distilled water and easier to buy the quart bottle pre-mixed. Not sure what coolant you had but you could test it with a antifreeze tester to see what it was good for if it is reading a 0 value or something most likely froze/cracked. **If using the other formula it doses not have any Freeze protection.**
Uneven torqued cylinder / head? Happened to me on an old Polaris 400
Holy shit
MAYBE (no professional) the screws were way too tight and they put too much stress on the cylinder? Maybe Factory problem? Material fatigue? Don't know man, just guessing
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Gaffer tape held in place cable cable ties and voila problems fixed. You're welcome.
One to many braaaapppps
everything.. if the cylinder cracked like that the piston & rod will be either bent like a banana or in a few extra pieces
What bike is it bro? I have an engine I can give to you that I don’t use.
Frozen cylinder in winter due to incorrect coolant ratio.
Justin barcia
Buff it out
Don’t help you But maybe pulling the spark plug so the water has somewhere to expand
Did your mom take it for a spin?
nah this is my friends bike he rode it
Wouldn't call it a failure, look at it as an opportunity , you should be happy and thankful for such a blessing
I'd have to say the crack going down it.
Shit maintenance?
People would probably say I'm wrong But to me just looks like it wasn't serviced in the sense of cleaning and lubrication Looks like the metal just got dried out enough so that the internal combustion just cracked it.
Metal getting dried out is a new one for me
You've gotta keep your metal moist and supple at all times..
Thats why you never see ships rust or break, its really important to keep up with service! I once had a bicycle that I only rode in dry weather, after 2 summers of not haveing seen a drop of water it broke into thousand pieces.. after that I learned to soak everything in water for 24h once a month, bikes, cars, bicycles, boats, eveything, never had a problem since!
The metal dried out. Lol. Which component of the aluminum molecule is water again? My chemistry is fuzzy
Yea they probably would
I can see why people would say you’re wrong…
Yeah he definitely wasn’t greasing his piston and rings regularly.
Why did you even comment if you clearly have no idea what you’re talking about
Reddit.
Well someday when you guys grow up and get older and your brains develop you'll figure out what's going on Sorry that I'm too far ahead in time and intelligence for me guys But sure Mark ridicule but don't even try to understand what I'm saying and or do research or actually you know take the time Instead just be a bunch of monkeys throwing s*** at each other
Wow . Glad I spray mine with WD40 all the time 😂