Comp Cam Trunion Upgrade Questions
Thread Starter
Melting Slicks
Joined: Dec 2012
Posts: 2,312
Likes: 8
From: Frisco Texas
I've been hearing the slightest click clack sound. Happens only sometimes. It's the drivers side. I read that these have a tendancy to un torque themselves. I'm am going to pop the covers and check the torque. What does a bad lifter sound like?
Thread Starter
Melting Slicks
Joined: Dec 2012
Posts: 2,312
Likes: 8
From: Frisco Texas
So I heard the tapping sound again. Pulled the valve cover off and found needle bearings. Used a magnet and pulled a bunch out, turned on the car, took it out for a ride, and it sounds much better!
Sounds like just some left overs from the blown rocker.
Sounds like just some left overs from the blown rocker.
Thread Starter
Melting Slicks
Joined: Dec 2012
Posts: 2,312
Likes: 8
From: Frisco Texas
I had my tuner change my oil and they found some floating around. I kept all the broken piece and it looks like that should be it. I can put the bearing back together now with the pieces i found give or take a few needle bearings. Im going to change my oil again soon though maybe 500 miles and run some sea foam to clean it out. Its been cold here so I haven't driven enough to get it up to full temp so I am going to take the scenic route to work tomorrow to get a good heat cycle in. I also checked the torque on the bolts and everything is nice and torqued down. I think things are looking up now.
Last edited by Mattie Num Nums; Jan 12, 2015 at 10:35 PM.
Thread Starter
Melting Slicks
Joined: Dec 2012
Posts: 2,312
Likes: 8
From: Frisco Texas
It does not. Just wanted to note the tick is back. I keep hearing about the sewing machine noise being normal but to be honest, we never had a sewing machine so my idea of the sewing machine sound might be a little skewed. Its mostly driver side. Ill pull the driver side cover to just make sure its clean tonight. Can anyone post a video of what "valve train" noise from a dual spring LS1 sounds like? I've looked online and most people are asking the same question as me. Car again feels great!
Team Owner
Joined: May 2001
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From: Western NY
There's no reason that your noise, and "running condition" should be fluctuating, UNLESS, as I just thought, some of the loose needle bearings from the OE rockers, got launched in between the valve springs' coils, and are causing the springs to bind. I know it's a long shot, but all I can think of, since I would think the oil draining from the head would sweep the needles to the oil pan, where they'd simply gather.
Thread Starter
Melting Slicks
Joined: Dec 2012
Posts: 2,312
Likes: 8
From: Frisco Texas
There's no reason that your noise, and "running condition" should be fluctuating, UNLESS, as I just thought, some of the loose needle bearings from the OE rockers, got launched in between the valve springs' coils, and are causing the springs to bind. I know it's a long shot, but all I can think of, since I would think the oil draining from the head would sweep the needles to the oil pan, where they'd simply gather.
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Drifting
Joined: May 2007
Posts: 1,547
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From: Huntersville, NC
the normal lifter preload is .060-.080. Usually, no one will have more than one single push rod length. Now there is a tolerance on valve height, and if you have one valve where all the tolerances stack up and give you the lower end of preload, you may have one valve assembly that is a teeny bit noisier. It may click all the time or just make a little more noise. You posted that you have fixed all your rockers, replacing those of concern.
I think your remaining concern is loose parts from the rocker failures, and it sounds like the loose parts have found their way to the pan, which would be good news. So, you probably aren't too worse off than the rest of us in terms of an eventual failure, so what remains is for you to decide whether it is worth an ulcer to worry. The path to the pan is the ports in the head and down to the pan with few other places for them to go. So, the PP said pull the pan. Good idea. Then pull the intake and valley cover and look around the lifters. After that the only other place for loose parts to hide and later cause a problem is inside the timing chain cover. That one is a really low likelihood, and more trouble than worth the reassurance IMHO.
I think your remaining concern is loose parts from the rocker failures, and it sounds like the loose parts have found their way to the pan, which would be good news. So, you probably aren't too worse off than the rest of us in terms of an eventual failure, so what remains is for you to decide whether it is worth an ulcer to worry. The path to the pan is the ports in the head and down to the pan with few other places for them to go. So, the PP said pull the pan. Good idea. Then pull the intake and valley cover and look around the lifters. After that the only other place for loose parts to hide and later cause a problem is inside the timing chain cover. That one is a really low likelihood, and more trouble than worth the reassurance IMHO.
Thread Starter
Melting Slicks
Joined: Dec 2012
Posts: 2,312
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From: Frisco Texas
The ticking is gone now its just a chugging sound which may be the sewing machine sound. I wish I knew what these things were suppose to sound like, my car is so dang loud everywhere and always sounds like a bucket of bolts :P
Team Owner
Joined: May 2001
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From: Western NY
And if you have headers on your car, that's a different story, as the steel tubing doesn't deaden the exhaust pulses like a cast iron manifold does.
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did you just buy the car?... if you have had it for awhile and installed the mods yourself then you should be accustomed to what it sounds like by now... it kinda seems like you're paranoid about it and it's getting into your head making you think it's constantly changing or something is wrong when in fact it's normal
Thread Starter
Melting Slicks
Joined: Dec 2012
Posts: 2,312
Likes: 8
From: Frisco Texas
did you just buy the car?... if you have had it for awhile and installed the mods yourself then you should be accustomed to what it sounds like by now... it kinda seems like you're paranoid about it and it's getting into your head making you think it's constantly changing or something is wrong when in fact it's normal
Thanks again everyone for the help and advice.
