WaveDemon
Not Dead - Notable Member
- Location
- Hell, Florida
there is no way for that to get in the reed cage from inside the motor. that fell in during your reed change or it went down your carb.
Why did my engine explode? *Solved*
- Thread starter bigbore
- Start date
Big Kahuna
Administrator
- Location
- Tuscaloosa, AL
F.o.d.
- Location
- Daytona Beach, Florida
Thats what I was thinking. I checked, and Carb looks fine, flame arrestor looks fine, all the the screws holding the adapter look fine? The pieces of metal are pretty big, and kinda makes me want to say that its a part of the reed plate, but both the intake and reed plate look fine? Im really lost on this one.
cmeripper26
Ripper26
- Location
- Connecticut
Have u split the bottom end to check the rear crank bearing?
WaveDemon
Not Dead - Notable Member
- Location
- Hell, Florida
I'll say it again... those pieces look like aluminum. It doesn't look anything like anything that would come from a crank.
motosicko
CRF450 & 98RN
- Location
- Denver, Co.
I blew apart the bottom end once and ended up with some of the case alum. on the other side of the reeds. Don't know exactly how but it happened. Ended up with a bent rod and destroyed total case and a sleeve.
stanton
High on jetskis.
- Location
- atascadero,ca
ill call it a lean seizure/piston meltdown. im with demon, thers no dings on the piston, just melted peices of aluminum.
R
ridethelip
Guest
part of the skirt from the exhaust side of piston?
- Location
- Granbury, TX
Did you take that sumbitch apart yet?????? Break the cases in half!
- Location
- Daytona Beach, Florida
.
Whoever said piston skirt is a winner.
Luckily, I collected all the pieces I found, so im gonna jb-weld it back together tonight :Banane13:
WaveDemon
Not Dead - Notable Member
- Location
- Hell, Florida
Luckily, I collected all the pieces I found, so im gonna jb-weld it back together tonight :Banane13:
that should work just fine. :lmao:
junkyardj
┌∩┐(◣_◢)┌∩┐
- Location
- barrie ont. canada
Whoever said piston skirt is a winner.
Luckily, I collected all the pieces I found, so im gonna jb-weld it back together tonight :Banane13:
think im the weiner!!! i beleve i was first, do i win that piston?
WaveDemon
Not Dead - Notable Member
- Location
- Hell, Florida
unfortunately, your problem is still not solved. you don't know why the piston broke.
Shifty
- SuperJet Thursday -
- Location
- Austin Texas - Lake LBJ
Whoever said piston skirt is a winner.
Luckily, I collected all the pieces I found, so im gonna jb-weld it back together tonight :Banane13:
Incase your seriously considering a repair with JB Weld... I think you should know thats a really bad idea.
Can loose tolerances between piston and cylinder wall cause that?
- Location
- Granbury, TX
- Location
- Daytona Beach, Florida
Umm well there are alot of factors.
1. The engine has NEVER been rebuilt, its original from 1994
2. I put on a high compression head sunday, even though the rear cylinder was about 10 psi lower before
3. I ran a friends gas. Idk what the ratio was. He said it was 50:1. I guess my modified SJ needed a little more oil
4. Sunday was the first day it ran, for over a month, since it had sunk!
Im honestly not too sad about the fact it died. It was a strong engine for almost 20 years! The rear cylinder was dieing anyway, glad it happened yesterday instead of while on vacation somewhere.
Last edited:
- Location
- Daytona Beach, Florida