I pulled my MS3 cam out and 3 lobes that make contact with the lifters were chewed up. This cam only has 9k miles on it. The lifters for those lobes were not chewed up but had some discoloration. The chewed up sections were only about a 1/4" long and they weren't very wide. They were torward the edge of the lobe.

 

Most likely a problem with the hardening of the outside of the cam. There has been several occurances of this. I thought most of it was solved though.

 

There is probably some metal shaving or chunks that made it ino the oil system somehow and got up to the cam lobes or the lobe itself was defective. Do not try to reuse that cam, get a new one.

 

Yeah, there was a bad batch of cores that affected Comp as well as Cammotion a few month back.
My advice is send the cam back to TSP and see what they can do.
If it is a hardening core problem Comp cam (grinder) might replace with new one.

 

I bought the cam in 2005. The lifters looked fine no unusual markings. The lobes just look like they just detiorated. I'll try to get some pics.

 

Called TSP, they told me to send it back to them and they'll forward it on to Comp for some testing. You would think if something got stuck between the lifter and the cam lobe that it would've chewed up the lifter.

 

Could be an oiling issue too, just so you check everything out.

 

Looks similar to my cam a couple years ago...

 

as well as mine i just pulled mine out last week and it looked like that but not quite as bad

 

What are your spring pressures, open and closed? As the guys said above could be the harding process done to the cam, but I've seen the same problem caused by to much spring pressure.
If you would like to go over this just give me a call, advise is free.

Harold
Port Pros LLC
512-257-0222

 

heres mine

 

Mine isn't that bad.

 

what springs are you using?

 

Never checked spring pressures, only checked PtV clearance and pushrod length after the new heads went on...I had the PRC Dual kit when it did that (pic above). Futral replaced that cam for me for nothing, but I still had to replace the lifters and all other parts. Thats when I threw on the AFR 205's

 

the MSv3 i bought between christmas(04) & new years(05) is fucked up too. i didn't notice it when i took it out of my stock motor. it sat on the shelf for about a year. after some inspection from a few people i sent it back to comp earlier this year. they basically told me it was out of warranty, nothing wrong with the hardness of it, and to **** myself!

so i have a useless cam i paid $400 for. mine is not near as bad as the above pics though.

 

It sounds like you and me are in the same boat. My cam was bought around that time but it wasn't installed until Sept 05. Well if thats what kinda response I'm gonna get from Comp then I might as well not waste my money shipping it back to TSP. Customer service is one of the biggest selling points to me, looks like I won't buy another Comp product.

 

i wish i would have know this before i ordered my ms4 this will be my last comp product too

 

My opinion is just how I feel, I'm not telling anyone Comp is a bad company or that any of their cams are bad. I just happened to have a bad experience with a Comp cam and by the way it sounds their customer service isn't the greatest. I also don't have any evidence that there was a hardening issue.

 

FWIW I had a friend with a Crane regrind, the peak of some of the lobes looked like that. He had been running weaker than specified springs.

 

I can figure your pressure out and be fairly close, I run and sell both AFR and Comp Cam parts.
Which springs did you put on the AFR's, I just need the part numbers. I have the installed heights for those heads so I should be able to tell you if the perssures were wrong.
As far as customer service goes as a dealer for Comp Cams I want to get to the bottom of this.
I buy and sell tons of Comp Cams parts and I don't want you guys to think no one cares when you spend cash and have this kind of stuff happen.
I will get on the phone with Comp and find out if there is a problem with these cams and get back to you.

Harold
Port Pros LLC
512-257-0222