what's up everyone today I'll be tearing apart a badly blown-up CRF 450 engine
and I'm gonna take you guys along alright this is what I'm working with
its I have an O 3 CR 450 and this is exactly how I got it top ends already
been taken off so we've got a pretty mashed up piston here broken into
several pieces with a busted rod cylinder is not looking too pretty let's
check out this head oh wow got some broken exhaust valves and
everything's mashed up pretty good and I suspect there's going to be some issues
with this bottom end as well due to the broken rod so I'm gonna tear this thing
apart and see what the extent of the damage is
if I had to guess why this engine blew up I would have to say lack of
maintenance and oil changes I mean one look inside and all you see is dirty oil
and sludge buildup
I ran into my first problem trying to get the balance of shaft out but it's
stuck in the cases and that's because the broken rod punched a hole through
the cases right here where the balancer shaft goes through so I'm gonna have to
give this a little love tap to get it out I'm gonna guess that the balance of
shaft got bent from the rod snapping let's take a look at this I'm surprised
this thing actually doesn't look like it's bent at all but with it being so
close to a broken rod I'm not gonna risk it
all right guys this engine is all apart now and even with how busted up it was
there's still a lot of good parts left over so all this stuff is in pretty good
shape with the exception of the head which is still worth some money
it's still fixable so I'm gonna sell it but these parts over here there is no
saving them they're far beyond repair I just noticed this a few minutes ago on
the cylinder there's actually a hole through the sleeve and into the jacket
pretty insane I have never seen that before
so this stuff is getting tossed out and it's on to cleaning for these parts over
here give me a few minutes and I'll have all this stuff looking prime man check
this out this stuff turned out meant I know some
you guys need CRF 450 parts so go check out revive moto calm I'll actually put
the link to where you can find these exact parts as the first one down below
as always thank you so much for watching and you'll have to hang tight the next
video coming out soon I'll be jumping back into the cr250
project here I'll see you soon