What happens when a Vitos stuffer crank explodes?

slickerthanyou

New Member
Dec 23, 2009
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Tore into my sons motor to see what the hell happened, and the mutha F'n stuffer in the crank blew apart, took the cases out, bent the web and scored The piston real bad! To all of those that don't want to run weisco forged, your a fool! Not one piece of piston broken, but the bottom end is sh*t the crank is bent and if my son would of rode it just a bit more probably would of disintegraded!

Pieces of the web are melted and stuck in the transfer ports! :eek:

Thanks VITOS!





The cylinder-

hwedxi.jpg






Never running one again, oh wait, my new motor has one! sh*t!
 
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Contact vito's and see what they say about it? But that really sucks lots of people run that crank.
 
Just wondering, how old is the crank? How many hrs on it?

UMMMM I'm gonna say about 100-140 hours in the last two seasons!

pics of the "plastic" stuffers exploded please, as i knew it was coming someday, from someone who actually puts some hours on their bike, not just a weekend every 6 months

take note, the piston is intact, and did not drop a skirt to cause the stuffers to detonate

I'll go dig them out of the transfers!! give me a minute!
 
i think he was trying to discern whether or not this was say, a 2 hour in just got it broken in, part failure, or several years of hard use that are causing a failure based on fatigue
 
Ok these two pieces were in the transfwers the rest is at the bottom on the cases and in my tranny!

e7a8b3b3.jpg


A top view of the piston, not lean!

dc9237c1.jpg
 
This is the second piston for this cylinder however If you remember i four corner siezed the first one after about 40 hours of riding due to lack of warm ups!
 
i think he was trying to discern whether or not this was say, a 2 hour in just got it broken in, part failure, or several years of hard use that are causing a failure based on fatigue

Yes, that is what I was wondering. Just like to know the facts behind the failure
 
I will send you my entire engine, perfectly running bottom end, no repairs, nothing broken, clutch is in great shape, with my ported cylinder, rechambered head, brand new wiseco piston kit, cometic gaskets, AND boyesen pro series reeds on a stock cage, for FREE. I pay shipping..


BEAT THAT BITCHES!
 
I will send you my entire engine, perfectly running bottom end, no repairs, nothing broken, clutch is in great shape, with my ported cylinder, rechambered head, brand new wiseco piston kit, cometic gaskets, AND boyesen pro series reeds on a stock cage, for FREE. I pay shipping..


BEAT THAT BITCHES!

ONly if it comes with a pic of your avatar air brushed !