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  #31 (permalink)  
Old 03-16-2008, 05:54 PM
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Hmmm, from what I can see, the rod bearing and crank look ok, as do all the cam lobes. I'll be curious to see the cam bearings! I wonder if someone before you trashed a cam and installed a new one and did not change the bearings? You did say you had metalic looking oil....right?

Mark

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  #32 (permalink)  
Old 03-16-2008, 06:04 PM
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we I was told it should have that many miles on it, he had it for 10 years, but it sat for most of them, he sadi he was starting it once in a wile but I don't know how many of the years he did that.
and he said that he redid the valve tran a few times and at least one of them was with a new cam, and that might be it he did change the bearings, I'm going to see if I can back ahold of him to ask.
and I did not say it had metallic oil.

so now im thinking, ok I replaced everything that needed replacing, and it didn't run long enough to do damage, so I want to know the best way to clean it out to try to prevent it from happening over time now, or will it not anymore?
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Old 03-16-2008, 06:08 PM
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Quote:
Originally Posted by Jmark
Hmmm, from what I can see, the rod bearing and crank look ok, as do all the cam lobes. I'll be curious to see the cam bearings! I wonder if someone before you trashed a cam and installed a new one and did not change the bearings? You did say you had metalic looking oil....right?

Mark

look at the third picture, the front cam journal looks worn, and also the 4th lobe to the right looks a little light. look again as my eyes are not that good. what do you think?

sam-missle
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Old 03-16-2008, 06:09 PM
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oops I mean,
and that might be it he did NOT change the bearings*
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  #35 (permalink)  
Old 03-16-2008, 06:21 PM
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If you have a dial indicator, mic each lobe across the low sides, then the the high side, subtract and that will give you the lift. Make a list of each one and see if any are off from the rest.

When you said the cam went flat, metalic oil is a given. Did the guy tell you it had a flat cam? Or????

Since there is no metal in the oil, at this point, the rest of the engine may be fine.
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Old 03-16-2008, 06:26 PM
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ok, well I can see with my eyes that some of them are worn smaller, and theres like dotted pitting on the tops of some of them also.
thats why I was planning on a new cam & lifters anyway.

and its possible that when most of the damage was done to the engine it was years ago, so the old owner might have changed the oil since thats point and I never woulda bin able to see it
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Old 03-16-2008, 06:29 PM
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Quote:
Originally Posted by ImRoyaltyInMyChevy
ok, well I can see with my eyes that some of them are worn smaller, and theres like dotted pitting on the tops of some of them also.
thats why I was planning on a new cam & lifters anyway.

and its possible that when most of the damage was done to the engine it was years ago, so the old owner might have changed the oil since thats point and I never woulda bin able to see it
The amount of wear I see on the cam probably wouldn't show up in the oil. It would make fuzz on a magnetic drain plug.

Got any pics of the cam bearings?

tom
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Old 03-16-2008, 06:34 PM
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ok thats good, so you think my engine is fine now, cause I was pretty scared for a wile when people started telling me I needed a rebuild lol
and I haven't pulled the bearing yet, and I cant get a good picture of the front one, thats why I didn't put it up already
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  #39 (permalink)  
Old 03-17-2008, 04:36 AM
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I see gouges on the bearing. It looks like they just shoved it in and scraped the bearings.
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Old 03-17-2008, 06:02 AM
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Looking at the rod bearing picture and the cam I would say the cam (at least this one) didn't go flat. The bottom of the cam bearing looks worn but not severely scored like some sort of failure went on. Possibly just too many dry starts. Check the bottom of all the lifters to see if the crown remains. If they do then that cam and lifters was working ok.

While it's where its at clean everything as best you can, replace the cam bearings and put it back together with the new parts you have.
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