gokartergo
3/4 ton status
I was bored tonight.. Since I went as far as I can go with this motor since we found some new problems.. Just woundering how many people now what caused this..??
CK5
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Guess what caused this problem...
- Thread starter gokartergo
- Start date
heavy foot by Dan??? /forums/images/graemlins/rotfl.gif /forums/images/graemlins/rotfl.gif /forums/images/graemlins/rotfl.gif
gokartergo
3/4 ton status
[ QUOTE ]
heavy foot by Dan??? /forums/images/graemlins/rotfl.gif /forums/images/graemlins/rotfl.gif /forums/images/graemlins/rotfl.gif
[/ QUOTE ]
Usually that would be true.. /forums/images/graemlins/waytogo.gif But I never ran this motor.. I was getting it ready to put in my burb. When we ran into a few more problems then I thought..
heavy foot by Dan??? /forums/images/graemlins/rotfl.gif /forums/images/graemlins/rotfl.gif /forums/images/graemlins/rotfl.gif
[/ QUOTE ]
Usually that would be true.. /forums/images/graemlins/waytogo.gif But I never ran this motor.. I was getting it ready to put in my burb. When we ran into a few more problems then I thought..
Tweetysuarus
1/2 ton status
Looks like the lifters and cam got no oil!
Bill
Bill
big pappa b
3/4 ton status
Is that one intake valve caved in? I've never seen that. Saw lifters like that though
doctor4x4
1/2 ton status
Looks like the lifters got no oil!
Amen
and i might add looks like its time to hot tank the block to clean out all the oil passages
My $.02
R
Amen
and i might add looks like its time to hot tank the block to clean out all the oil passages
My $.02
R
ZonkRat
1/2 ton status
My guess would be the lifter & cam wear caused a really lean fuel mix which raised the temp. in that cyl. enough that the valve spring tried to pull valve through the head.I'll bet the piston was burned badly too. /forums/images/graemlins/thinking.gif
vince13
1/2 ton status
with the valve the way it is it looks like it had way too much rpm and the timing advance and that cylinder detonated before the valve closed and slammed the valve in and then stuck closed and wore out the lifters. just my too cents.
I had that happen to an engine after a rebuild. Turned out two of the lifters were a little tight and didn't like going up and down with the cam. I still drove for a little while. I thought my carb wasn't working right so I'd fight to keep it running at a stoplight. Turned out was just killing it more /forums/images/graemlins/doah.gif
I've seen a valve do that before. It was caused by a lean condition due to a vacuum leak at the intake manifold. It was in my grandparents' 89 C2500 with 150,000 miles on it. My Dad just cut the old valve out and put a used one in. Bandaid fix for a broken leg. We thought it'd only go 10,000 miles maximum but it kept going until around the 260,000 mile mark when the frame broke.
I've seen cams do that before too. It's really hard to screw up a cam break in no matter what anyone says. It only becomes an issue with wild cams or really stiff springs. It's usually a poor cam that causes it in my experience. I've seen lobes completely worn off. I have a Cadillac 4.1L cam somewhere that the lobes are polished right off. Usually those 4.1L cams broke...
To me, it looks like that motor has done been abused, mon. I'd be looking for other problems with that motor including the bores not being wore evenly.
I've seen cams do that before too. It's really hard to screw up a cam break in no matter what anyone says. It only becomes an issue with wild cams or really stiff springs. It's usually a poor cam that causes it in my experience. I've seen lobes completely worn off. I have a Cadillac 4.1L cam somewhere that the lobes are polished right off. Usually those 4.1L cams broke...
To me, it looks like that motor has done been abused, mon. I'd be looking for other problems with that motor including the bores not being wore evenly.
gokartergo
3/4 ton status
[ QUOTE ]
I had that happen to an engine after a rebuild. Turned out two of the lifters were a little tight and didn't like going up and down with the cam. I still drove for a little while. I thought my carb wasn't working right so I'd fight to keep it running at a stoplight. Turned out was just killing it more /forums/images/graemlins/doah.gif
[/ QUOTE ]
That's it... /forums/images/graemlins/thumb.gif
I had that happen to an engine after a rebuild. Turned out two of the lifters were a little tight and didn't like going up and down with the cam. I still drove for a little while. I thought my carb wasn't working right so I'd fight to keep it running at a stoplight. Turned out was just killing it more /forums/images/graemlins/doah.gif
[/ QUOTE ]
That's it... /forums/images/graemlins/thumb.gif
