Catastrophic Failure of the Camshaft Bearings

[Johnny Mac]

At my age I don't look at dates or what day it is. No need to. Everyday is Saturday and Sunday is for the lord. I can remember when I hated Monday morning and couldn't wait until Friday. So who cares? I am on this site to occupy time. Why are you here?

I've done the same thing many times (clicked an old thread), and i'm in my 30's! I was just being goofy with the picture. I actually had this happen on a SBC once, but had never seen it before or after, so thats why I clicked. I assumed my cheapo summit cam wasn't true. Lifters were fine, cam looked ok, I didn't have the tools to check runout when I was 16. melted the bearings so bad is stretched the timing chain, which was the only way i even knew anything was wrong. Had a MAJOR flat spot in the RPM's, then would pull out of it.

 

[MOPAROFFICIAL]

When the cam bearings go... the cam gets closer to the crank...the chain slack is introduced by clearance and not stretch.

 

[CFD244]

I like it when old threads are resurrected. I wasn't around when they were first started, and I learn lot's from them.

 

[Johnny Mac]

When the cam bearings go... the cam gets closer to the crank...the chain slack is introduced by clearance and not stretch.

this thing was stretched like a hula hoop with the pins ready to pop. idk how it didn't jump teeth. you could touch the center together with room to spare.

 

[Killer6]

this thing was stretched like a hula hoop with the pins ready to pop. idk how it didn't jump teeth. you could touch the center together with room to spare.

The load trying to rotate a cam seizing in it's bearings would certainly do that, particularly if that cam sprocket was smokin' hot.........

 

[MOPAROFFICIAL]

The load trying to rotate a cam seizing in it's bearings would certainly do that, particularly if that cam sprocket was smokin' hot.........

If that's not half track.. you'd have to be deaf to be driving it to that point. And if you can pinch the chain together... its jumping.
Embellish to the high heavens though.

 

[Killer6]

If that's not half track.. you'd have to be deaf to be driving it to that point. And if you can pinch the chain together... its jumping.
Embellish to the high heavens though.

You would think with the cam that tight, the first time Ya shut it down w/enough stretch the crank woulda kicked back & jumped, but I ain't bettin' My life it couldn't have magically stayed put...lol...

 

[NCmtnDWELLER]

U are probably

As bad as a casual look at that "looks," I'll bet there's a hell of a lot more than bad cam bearings...........

U are correct on that statement ### another reason why I jumped on 2 sets of them offered up last month on forum by LOCOMOTION
I will store them for future usage

 

[krazykuda]

What a cat-trastophy....