garygnu

maybe improper lifter preload ?what lifters did you use ? maybe you have a bad PS pump .

mchicia1

iTrader: (5)

1) No the preload is perfect, right at .050".

2) The video taken is with the belts off. I put that in the first post.


It's either the oil pump or the camshaft. It's going back to stock to sell, so I will have an answer soon. It just sucks because if it's the cam, I can't sell it, and I don't know how to prove to the vendor that it is the cam.

Anthony Williams

iTrader: (3)

My $$$ is on the cam.

mchicia1

iTrader: (5)

Would suck, but to prove it's the cam, I will break down to the front cover, swap the oil pump/re align it properly with feeler gauges, put the cover and pulley back on and start it up with no accessories on the car. That way, I'm only pulling the balancer back off and front cover away from pulling the cam back out for another.

mchicia1

iTrader: (5)

I found another video with an identical noise and it turned out to be the camshaft.

I am pulling it out next Saturday

My concern is not the added labor. It's what is being worn down by the camshaft to cause that noise? I'm concerned I'll be tearing everything down again even after I fix the noise to fix something else . I'm praying it's not cam bearing being prematurely worn. I can take lifters going bad, that's just a head swap. But cam bearings = motor comes out and gets torn apart.

Video I found

My car

mchicia1

iTrader: (5)

Found another video FYI.

Not an ls1, but a comp cam that's whining. Sounds identical. I am just wondering if it's actually causing harm or not. I hope the vendor warranties it.

mchicia1

iTrader: (5)

And another

jsteele90

iTrader: (13)

well this isnt reassuring i just put a comp cam in my car and its making a whining sound.

Coonass350

iTrader: (19)

Wow, I never would've thought that a cam could make a whining sound. Learn something new everday.

mchicia1

iTrader: (5)

Same sound as mine and the videos I linked?

I know! Everyone I talk to thinks I'm nuts for swapping the cam to fix this noise.

jsteele90

iTrader: (13)

yes it is.

mchicia1

iTrader: (5)

Who did you buy it from?

Take a video of it and post it up. The more the merrier because I have a feeling it's going to be tough to get a warranty replacement.

jsteele90

iTrader: (13)

it was spec'd by Martin@Tick but it is a Comp grind, of course.

Kip Fabre

This is true we did have some problems 6 or 7 years ago. We started polishing the cam lobe after grinding after that now we have no problems.