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I think a new lifter ate it :(

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Old Sep 11, 2016 | 02:50 PM
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Default I think a new lifter ate it :(

I think I just had a lifter fail from what im hearing....The best way to describe it, is all of the sudden it sounded like someone started shaking a pack of tic tacs vigorously. I recently installed a set of Lunati Signature hydraulic link bars with my last heads cam swap and the car made it less than 1000 miles... has anyone had one of these or the Morel equivalent fail on them? It happened right after a cold start at idle as I was coasting out of a driveway. I pulled the covers real quick and all the rockers are tight, pushrods in place, and springs intact so the heads have to come off again. I'm not certain but I don't see what else it could be. I was hoping to see a smoking gun like a loose rocke ect but weirdly enough they seem tight....so my best guess is a roller failure. I don't see what else could cause a noise like that.
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Old Sep 11, 2016 | 02:53 PM
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By the way, I have CHE rockers and the trunions have journal bearings....no needle bearings there anymore.
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Old Sep 11, 2016 | 03:15 PM
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I would investigate your pushrods just see if you possibly bent one but that sucks if it's a lifter.
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Old Sep 11, 2016 | 04:22 PM
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Originally Posted by Brandon619
I would investigate your pushrods just see if you possibly bent one but that sucks if it's a lifter.
I'll give them a look, but I think it's worse unfortunately.
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Old Sep 11, 2016 | 04:41 PM
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Originally Posted by Nopps
I'll give them a look, but I think it's worse unfortunately.
Goodluck.
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Old Sep 11, 2016 | 07:45 PM
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Does not sound good. Keep the thread updated for what you find.
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Old Sep 11, 2016 | 10:09 PM
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Look in the front of the engine for fail idle bearing water pump shaft loose? even the harmonic damper out of wack before start to tear it down.

You may want to get some one to start the engine briefly whale you watch.
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Old Sep 12, 2016 | 05:37 PM
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When the camshaft was installed was loctite used on the sprocket bolts? If not then your root cause has been identified.
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Old Sep 12, 2016 | 05:59 PM
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My bet like person above is cam sprocket came loose taking a lifter out. Seen it several times.
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Old Sep 12, 2016 | 08:24 PM
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Originally Posted by z06scentair
When the camshaft was installed was loctite used on the sprocket bolts? If not then your root cause has been identified.
Originally Posted by Unreal
My bet like person above is cam sprocket came loose taking a lifter out. Seen it several times.
Yes, but I used blue. Arp bolts were used also which scares me. It ran for about 10 to 15 seconds at idle with the noise. I wonder... if this has happened... if it's gonna be a new cam and lifters or if the engine is toast.
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Old Sep 12, 2016 | 11:05 PM
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New cam and lifters, and make sure you don't trash the lifter bore trying to force it out the top if it broke. Push it down through where the cam was. Clean up debris in the oil pan.

If you trashed a lifter bore, motor has to come out, and that gets pricey quick.
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Old Sep 13, 2016 | 10:41 PM
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Originally Posted by Unreal
New cam and lifters, and make sure you don't trash the lifter bore trying to force it out the top if it broke. Push it down through where the cam was. Clean up debris in the oil pan.

If you trashed a lifter bore, motor has to come out, and that gets pricey quick.
Pulled the cover....cam bolts are tight :/ ...Guess it's time to pull the heads.
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Old Sep 14, 2016 | 12:41 AM
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So you pulled the valve cover or the timing cover? Did you roll the motor over and check the rockers to see if they have lost their preload?? Did you pull the rockers and push rods to see if you can visually see anything? Have you removed the oil filter and cut it open??
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Old Sep 15, 2016 | 08:30 AM
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Originally Posted by User Omega
So you pulled the valve cover or the timing cover? Did you roll the motor over and check the rockers to see if they have lost their preload?? Did you pull the rockers and push rods to see if you can visually see anything? Have you removed the oil filter and cut it open??
Yes...it turns out that the oil pump has failed. I noticed the pressure stage wouldn't turn freely by hand during disassembly. I took the pump apart and found the gerotor to be cutting into the pump housing. Not sure what caused it or why. No metal in the pump at all and nothing looks to have clogged it. though....there is a bit of very fine glitter in the oil too. Not good.

Last edited by Nopps; Sep 15, 2016 at 08:32 AM.
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Old Sep 15, 2016 | 01:56 PM
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Originally Posted by Nopps
Yes...it turns out that the oil pump has failed. I noticed the pressure stage wouldn't turn freely by hand during disassembly. I took the pump apart and found the gerotor to be cutting into the pump housing. Not sure what caused it or why. No metal in the pump at all and nothing looks to have clogged it. though....there is a bit of very fine glitter in the oil too. Not good.
Darn, what make and model of pump?
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Old Sep 15, 2016 | 04:01 PM
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Originally Posted by Brandon619
Darn, what make and model of pump?
Oem ls7 pump.
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Old Sep 15, 2016 | 05:37 PM
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Originally Posted by Nopps
Oem ls7 pump.
Ok I didn't realize that your build was an LS7, hopefully you don't have to do too much damage control.
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