Chasing the damn ticking noise...
Thread Starter
Staging Lane
Joined: Oct 2006
Posts: 83
Likes: 0
From: Iowa
Chasing the damn ticking noise... I'm chasing a ticking noise I've been hearing forever and started tonight by checking the torque on all the rockers. They were all 22lb-ft, just as they should be. Everything appears to be in good visual condition from what I can see. Springs and rockers are in perfect condition anyway.
I want to check the Valve Lash next. I purchased a manual to give me an idea of what I'm doing as I'm still new to working on cars. I've been reading through it a bit, and am not sure I understand exactly what needs to be done.
Can someone explain, step-by-step, the procedure on checking valve lash so that I can make sure everything is where it needs to be?
I want to check the Valve Lash next. I purchased a manual to give me an idea of what I'm doing as I'm still new to working on cars. I've been reading through it a bit, and am not sure I understand exactly what needs to be done.
Can someone explain, step-by-step, the procedure on checking valve lash so that I can make sure everything is where it needs to be?
Thread Starter
Staging Lane
Joined: Oct 2006
Posts: 83
Likes: 0
From: Iowa
Won't believe that until I hear another LS1 with the same exact noise with a clean bill of health.
If its real loud its possibly a slightly bent pushrod. Let me go get a video of mine.
EDIT: scratch the vid, the camera can't hear the ticking over the exhaust.
EDIT: scratch the vid, the camera can't hear the ticking over the exhaust.
Last edited by Arc00TA; Mar 9, 2008 at 01:15 AM.
Heres one you can hear it pretty good, I took this the other day about my water pump.
http://s180.photobucket.com/albums/x...t=MVI_0091.flv
http://s180.photobucket.com/albums/x...t=MVI_0091.flv
Thread Starter
Staging Lane
Joined: Oct 2006
Posts: 83
Likes: 0
From: Iowa
Mine sounds a lot like that actually. Maybe not quite that loud, but just like that.
Could a slightly bent pushrod cause other problems? If one is bent, I'll definitely be replacing them all, but what I'm wondering is if I have a bent pushrod...did something else also break or get damaged when that happened?
Thanks for posting that video. Now I'm thinking of just going ahead with removing all the pushrods tomorrow.
How bent is that pushrod making that noise?
Could a slightly bent pushrod cause other problems? If one is bent, I'll definitely be replacing them all, but what I'm wondering is if I have a bent pushrod...did something else also break or get damaged when that happened?
Thanks for posting that video. Now I'm thinking of just going ahead with removing all the pushrods tomorrow.
How bent is that pushrod making that noise?
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Bent pushrod, if they're stock, could happen from simply over revving it. I have a small tick, but that's pretty normal, expecially on a h/c car. No sense in just replacing the pushrods, might as well do a h/c swap while your at it.
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Staging Lane
Joined: Oct 2006
Posts: 83
Likes: 0
From: Iowa
I'll be doing head/cam, but definitely not now or anytime in the near future.
You could pull your pushrods out though and roll them on a flat surface and that would tell you if they're bent. Thread Starter
Staging Lane
Joined: Oct 2006
Posts: 83
Likes: 0
From: Iowa
This isn't piston slap or normal valve train noise, I need to get that cleared up. There is an issue.
It's loud enough to be extremely irritating, I can hear it over my B&B Bullets while on the throttle. It's only coming from one cylinder it sounds like, and it's on the right side. It doesn't matter how long the car has been running or what the temperature is, the noise is always there.
I'll be yanking the pushrods today.
It's loud enough to be extremely irritating, I can hear it over my B&B Bullets while on the throttle. It's only coming from one cylinder it sounds like, and it's on the right side. It doesn't matter how long the car has been running or what the temperature is, the noise is always there.
I'll be yanking the pushrods today.
Thread Starter
Staging Lane
Joined: Oct 2006
Posts: 83
Likes: 0
From: Iowa
Thread Starter
Staging Lane
Joined: Oct 2006
Posts: 83
Likes: 0
From: Iowa
Just yanked all the pushrods from the passenger side where the noise was coming from.
All of the pushrods have a slight bend to them. When placed on a flat desktop surface, the middle bows up just a bit. I'm checking each of them right now with a feeler gauge to determine the exact gap amount.
Does anyone know what the tolerance is?
I'm checking my rebuild manual right now to see if it says.
EDIT: My manual says .008 is tolerance.
All of the pushrods have a slight bend to them. When placed on a flat desktop surface, the middle bows up just a bit. I'm checking each of them right now with a feeler gauge to determine the exact gap amount.
Does anyone know what the tolerance is?
I'm checking my rebuild manual right now to see if it says.
EDIT: My manual says .008 is tolerance.
Thread Starter
Staging Lane
Joined: Oct 2006
Posts: 83
Likes: 0
From: Iowa
Put it on a board or something so the ends aren't touching, then check. I'm not too worried about mine because it gets a lot quieter when the car warms up, and I will be doing H/C soon and replacing everything anyways.
Thread Starter
Staging Lane
Joined: Oct 2006
Posts: 83
Likes: 0
From: Iowa
Put everything back together for today, going to go for a test drive for a bit.
I would like to note one thing I found peculiar when reinserting the pushrods. The 2nd cylinder from the front on the passenger side, the exhaust valve pushrod...I could feel a grinding sensation when rotating and setting it against the lifter. I could not feel anything even remotely close to this with the other 7 pushrods. I coated it in a bit of oil from the top of the head and put it back in and pulled it out and there "some" metal shavings stuck to the oil on the end of the pushrod. I pushed it down again to see and I still felt that wierd grinding sensation, almost like tiny metal flakes were between the lifter and pushrod ball end. Any thoughts on this would be appreciated. This is the only odd thing I noticed today.