the story of the growing repair bill...

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OnVacation

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Apr 26, 2011
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Fresh back from deployment, I thought I'd treat myself. Found a beautiful lifted f350 with a healthy twin turbo 12V living under the hood. She had an NV5600 (I just can't live with an automatic...), 4 door, leer shell, and was bathed in a deep glossy black paint.

bringing her home from the body shop (e-brake wasn't fully engaged... I kicked myself...), she started making one hell of a racket. I shut it down, and low and behold no oil...

shoulda been a sign to stop while I was ahead...

filled her up, and made it a few hundred yards.

had it towed to the shop. every pushtube was bent, cam was sheared off, timing case was split, valves were damaged, all the gears were chipped. And they found a gaping hole in the t-case.

Turns out it wasn't the KDP. PO had told me the KDP had been fixed. Turns out the bolt, and tab, had backed out, and prevented the KDP from doing any damage. it was still firmly seated.

So, new Hamilton cam from Cummins Performance Parts, Kenny's pulling parts cover, cam, and pump gears, plus valves, tubes, etc... Should get the truck up and running healthy again

Been lurking around the forum for some time now, looking at threads, trying to figure out what could have caused the problem, glad I found a lot of the vendors around the site, certainly has been a great help and helped me find a few upgrades for the future... so, thanks for all the help!
 
Well, I got some awesome carnage photos from the teardown on the engine. Should be all wrapped up tomorrow.

I had ordered the Kenny's adjustable cam and pump gear and cover, but the shop I used wasn't comfortable with turning down the pulleys or doing the spacers. Not a question on their capabilities, they just weren't okay with spacing the gears out that far, too much fear on undue wear on the engine, they wouldn't do the work.

So, the kenny's cover needs to go back, I know eatsoot makes a cover they market as bolt on ( I know you're on the forum somewhere, I just don't know how to message you to link you to the page...) Will their cover provide access for both the cam and pump gears? Does it clear all the drives and belts without machining spacers?

I'll try and get the pictures downsized and post them up later tonight
 
brianjbeach85 said:
So the KDP bolt and tab caused your problem?
Click to expand...

yep. Go figure. apparently several of the bolts holding the timing case were loose.

And, rather than getting stiffer valve springs, they machined new grooves in each of the valves and compressed the stock springs. They weren't binding (bad), but it had done a ton of damage to the valve seals.

They had used a lot of great parts putting the engine together, but then cut some really weird corners.
 
As promised, carnage photos

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exhaust valve with re-cut retainer ring


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exhaust valves


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tappets. Only 4 survived the process


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The rest of the tappets, all destroyed


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Other stuff pulled from the oil pan. Parts of tappets, a bolt (from the timing case), a brakecleen/WD40 style tube, what looks like some steel shot (melted perhaps?), and some little weird green thing


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This is a bolt lock tab. The kind where you bend one side up to lock the bolt down. Not only was the tab not locked, there was no loctite used, it wasn't torqued to spec, and it really doesn't seem like its heavy enough to me. But, it wasn't the KDP that killed the engine.


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This is the tooth missing from the cam gear. You can't see too well in this picture, but you can see and feel the thread imprints on the piece from when the bolt went through the gears.


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The KDP retaining bolt. and another part of it. Its hardly distinguishable as a bolt anymore.


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The cam retainer. Both pieces of it. One part was in the oil pan, one part was in the cam chest


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Pushtubes. They're all bent to some degree, some worse than others. Two had to be pulled with a slide hammer.


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The cam. Or, most of it at least.


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Cam gear with missing tooth/damaged teeth.


I've also got some other pics that are higher res, but I can't get them to shrink down uploading them, and I can't resize them on this computer. Thats the lion's share of the damage though. Still have a leaking rear main, and need a new front driveshaft, but she's running and driving again.
 
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