mchicia1

iTrader: (5)

Another one from 2012 on camaro5

http://www.camaro5.com/forums/showthread.php?p=7390669

joshua022

iTrader: (12)

I will try but itll be on an iphone so quality may(will) suck

mchicia1

iTrader: (5)

Mine were taken on my android and it turned out fine.

Colt45

Anyone pull the heads to check the lifters and check out the cam. For signs of abnormal wear.

mchicia1

iTrader: (5)

I have the cam out already, no abnormal wear.

Colt45

How many miles are on it. Pics? I have about 130 miles on mine. I may just let it eat on the dyno this weekend.

mchicia1

iTrader: (5)

3000 miles with a lot of runs to 6600 rpms.

I'll snap pics tomorrow.

Colt45

Ok then. You going to put a stock cam in to check.

JakeFusion

iTrader: (7)

Indeed.

The Cam Motion thing happened about 9 years ago. And it was actually determined to be a bad batch of hardening on the cores. And guess what, Futral/Cam Motion actually took care of the people with the problem from what I recall.

It'd be nice to figure out what's causing the issue with everyone in this thread, though.

mchicia1

iTrader: (5)

Right now there's a replacement Lunati grind in, because I figured it was just one bad core, but that one has the same whine too.

I'll tear it down again when it's warmer out and try a stock cam. Who knows when that will be with this winter mess.

I might send this first cam back to Lunati.

Colt45

I think comp and lunati use different cores right?

mchicia1

iTrader: (5)

The pricing is identical @ $380, indicating they could possibly be getting their cores from the same place.

mchicia1

iTrader: (5)

I found (what I think is) abnormal wear. I'm not an expert by any means on cam analysis, but out of the 15 or so cams I have pulled out of cars, I have never seen a lobe have a sharp line through it. Not only is it a sharp line, it's off center as well.


Suspect lobe wear



Normal lobe wear based on my experience. A wide, faint line, right down the middle of the lobe.

jsteele90

iTrader: (13)

can you feel the wear with your fingernail? does it get caught? how many wear spots di you find?

mchicia1

iTrader: (5)

Lol wouldn't know, I bite my nails.

That was the only wear spot. It doesn't feel too bad when I touch it..it's still smooth, but obviously deeper than normal. I've never seen anything like it before though, it looks odd to me.

poltergeist 02

iTrader: (65)

It would be interesting to see if your other cam has wear on the same lobe. If so, I would guess it's a bad lifter causing this mess for you.

mchicia1

iTrader: (5)

I would agree with you, however, my previous AI cam had zero wear on it and zero whine. Same with the cam before that.

This cam whined since the first second it started. I find it hard to believe that my lifter went bad as soon I put a new cam in. I'd be more inclined to believe this cam caused the lifter to go bad, and caused the 2nd replacement cam to still whine.

It's a chicken or the egg problem it seems

Colt45

Looks like something was on the cam that could of wore that line in the lobe. I wonder if the lifter for that lobes shows any lines in it or marks.

mchicia1

iTrader: (5)

Colt, you're in Tampa, it's warm. Go pull yours out now and check that lobe! LOL!

Colt45

I think I'll pull the heads and check the lifters, a lot easier than pulling the cam in a c5