What caused this top end carnage?

[gb blaster]

Alright so I just pulled my cylinder and all yesterday thankfully!

Anyway it's pretty bad, whats the guesses for what caused the damage?

It was 100% airtight. Beyond any resonable doubt I no it was leak proff I've preformed 2 recently! Both holding 7 psi for 15 minutes before stopping!

I was playing with my jetting on the new fmf pip I just got it right actually. I DID start lean I plug chopped to a 300 and started with the reccomeded 280... So it was lean while chopping think that's the cause?

Anyways enjoy the pics. Thank god I stopped riding when I did, I'd have all types of shrapnel in my cases!

And the cylinder & head !

 

[Wheels]

Piston Death

Why did you pull your cylinder to find this? Were there any symptoms?

 

[Awk08]

no tellin what caused the carnage ?
airleak ?, low compression ?, worn piston to cylinder clearence ?, poorly maintained/debris in thru a dirty filter ?
but if you don't clean it up a little, and get red clay dirt all over everything again while reassembling it, it will be a short lived rebuild.

tape off that bottom end very very well, before any more of that shat gets into it.
i see red clay in the cylinder, on the piston/rings and even some down into the crank area ???
try to clean it up before reassembly without letting anymore get into parts you plan to re-use.
cleaning it before disassembly is highly recomemended.

 

[Blaaster]

The pics of the piston are a little fuzzy.

I can see that above the top ring there seems to be no scuffing, which leads me to say that either lack of sufficient warm up time or lubrication could have caused it.

Any chance of some sharper pics of the piston.

 

[gb blaster]

no tellin what caused the carnage ?
airleak ?, low compression ?, worn piston to cylinder clearence ?, poorly maintained/debris in thru a dirty filter ?
but if you don't clean it up a little, and get red clay dirt all over everything again while reassembling it, it will be a short lived rebuild.

tape off that bottom end very very well, before any more of that shat gets into it.
i see red clay in the cylinder, on the piston/rings and even some down into the crank area ???
try to clean it up before reassembly without letting anymore get into parts you plan to re-use.
cleaning it before disassembly is highly recomemended.

Yeah I no I wanted to clean it but It was at storage and I had no way of gettig water to it or water back! Im kinda kicking myself for not cleaning it now tho imscared mud may have got in the bottom end. I tried to be sure not to get anything in there. Is there a way to clean the bottom end before reassembling? And not splitting the cases? I did cover the piston rod and all around the cylinder mating surface with clean, brand new shop cloths and taped them off! The cylinder pics where taken later I was touching it with dirty hands because it was gettin cleaned either way I did my best to cover and maintain a clean bottom end.

Well it felt like low compression but I did do a comp test and it said 120 I have the pic and all of it!

There is no way that, that cylinder had 120 psi tho!

 

[gb blaster]

The pics of the piston are a little fuzzy.

I can see that above the top ring there seems to be no scuffing, which leads me to say that either lack of sufficient warm up time or lubrication could have caused it.

Any chance of some sharper pics of the piston.

My bikes in a storage I will do my best to get down there tomorrow and get you guys some more pics but that's all I got for now buddy.

 

[Wifesblaster]

Yeah but kicking it I could tell it was low. I think it was due to low compression. We can flush the bottom end. As you as you didn't drop and metal or plastic chunks in there you'll be good.

 

[gb blaster]

Cool sounds good! That's what I was thinking at least it may just be dust I made extra care to cover up and seal everything promptly. I'm guessing low comp to. I felt it idk how I got it to Reed 120 oh well thanks guys just was wondering if anyone had a idea so that I could know what not to do next time.. Keep an eye on the rebuild thread the blaster will be 120 Percent before Awks ride!