if u have installed a cam lately

[thahemp]

Originally Posted by blake2010ss

I had a comp cam in my first setup..last year around valentines day it started shredding apart metal. Scarred every single lifter and 2 cylinder walls. I have a cam motion cam now.. no problems as of now.

That isn't relevant to this thread and doesn't make a whole lot of sense either. How does a cam scar your cylinder walls? I'd guess something else gave out first in your case and trashed a perfectly good cam.

:edit:

I should say how do you know it was the cam that ruined your valvetrain and not the other way around?

[Mydivorcegift]

Mine failed 2 years ago...it was a "soft one"...

I understand crap happens, and most never have any issues at all, but me personally I'll never have another one...

I can post some pics tomorrow...

[maxdmax]

I have had 2 engine failures due to what I am now 99% sure is related to Comp CAM issues and I just took the CAM out of my Son's car with less than 2,500 miles on it and it was well on its way of failing. I am sure if we had not gotten it out it would have surely been a total failure as well in a few hundred more miles. They replaced the only one we sent them for free due to it being too soft. I left Comp a message on their website about this but they have not responded so far. I am now pretty sure the 2 other CAM I have are the root of my issues, I am sending them off to be tested by a third party next week if I do not hear anything back from Comp by then.

[dekan513]

maxdmax, after talking and doing a lil searching its happening to few others. aswell.

[maxdmax]

Originally Posted by dekan513

maxdmax, after talking and doing a lil searching its happening to few others. aswell.

Yes I know I have a couple on PMs people sent me on another site. Let me know how to contact others insure would like to talk to them. Right now I am giving Comp a few more days to respond to the message I left them on their website.

[SC2150]

Originally Posted by dekan513

i said i dont do the work. so why would i explain anything. but if it makes u feel better .


if ur not about just selling parts and pushing stuff , then why u claim 8-12 rwhp on ur port jobs . numberous post showing losses . like i said comp is taking some fault.

if u sell the item we are talkin about i and most ppl dont consider that bias . u keep jumping to conclusions which only means to me that ur defending something that u dont want ppl to know. when ppl act as u are for me just saying something seeing if anyone else is seeing this which other are. usally means they know its the truth.

nice pictures by the way.

i asked about records not winning something tho. big diff. ive even won some money and ive only been racing cars at a track for less then a year. lol

but like i said just stand by for what comp says, they have admitted fault alrdy by accepting the return and exchange of the cams.

go dust off another 10 year old trophy or pic of a check with someone elses name lol.

You are out of line....show me any of our products that dont make the power claimed.....and 10 year old trophy's? It has been 2011 since we won the world at pomona, but still take Nationals wins every month or two. If you knew what you were talking about you could contribute something positive.

We have had zero failures with Comp on there LS cams.....we did have (6-7 years ago) a bad batch of 918's springs, but nothing since.

The point I have been making is the improper preload and pushrod length.

Originally Posted by willhe64

Tracey,
Comp cams is definitely a top product. But they may have put out a bad batch of cams. It happens. A whole batch goes through the parkerizing process and it is not quite right so they come out a bit soft. Or the CNC machine has a blip. Shit happens. If you start seeing a whole bunch of people with this issue then it is time to take a closer look at the product.

Yamaha recalled an entire year of Virago motorcycles due to this.

You are correct, all have problems from time to time....no matter what the company or the product.

The most common thing I see with cams are degreeing them and finding they were not indexed correctly in the grinding jig (I assume) but that is easy to adjust for.

If you search any manufacturers cam's you can find failures, but as I firt pointed out, most can be attributed to improper install....and yes, we see failures from other shops all the time.

And Hemp, your hearing something different than I described. Factory sounds that are issue are piston slap, and of course the ocaissional failure of a lifter or rocker bearings on stock GM parts, and they are prettty rare.

And as Jason 98 posted, Comp grinds their custom cams, and we have seen zero failures either. What my intent of the posts were to try not have the "internet sky is falling" effect that happens in cases like this far to often. The OP makes it sound like you will destroy your motor if you install a comp cam, and that could not be further from the truth....then his false attacks on our products which are proven gains in hundreds of shops dyno's (except when one persone had a VMax TB hand ported and polished ruining the CNC pattern effect, which must be what he is reffering to as there is no othe thread I can think of).

I stand by our accomplishments in drag racing, and they continue today......and these are not "test and tune" days like most post, this is years of professional drag racing and the wins to show.

My point still stands. As Alan of PMC states (he gets it, one of the shops that knows how to build engines and I have never met him, all based on his posts showing the knowledge) just throwing in the push rods that many vendors reccomend is a recipe for just the failures described. ANY cam, lifters, rocker arms will be hammered to failure this way if not enough preload, and to much and exhaust valves burn.

I contribute to threads based upon a lifetime of engine building all types of engines, not just LS based, and yes.....stuff fails. Always has and always will.....but blanket "crying wolf" helps no one, but hurts a vendor horribly. This would be a much better thread if it was "how to avoid cam lobe failure by understanding proper lifter pre-load and push rod length" than what it is.

[dekan513]

my points been proven . ty for u time tracey lol

u put words in ppls mouth.

do u really want me to show post after post about ur intakes?

just start a new post sc2150 ported intakes and see what u get

[strych9]

Man, this thread has really taken a bad turn. SC2150, why is it if somebody has an opinion, you write an epistle that boasts your expertise, accomplishments, and one-sided thinking? Then you call them out to prove their qualifications??

All the OP did was ask if anybody has seen the problem before. Your installation specs were helpful, then you start puffing out your chest in defense of what? Nobody on these forums questions your knowledge or abilities. You shouldn't question theirs, either.

State your opinion and move on. God.

[JEFF75645]

Originally Posted by strych9

Man, this thread has really taken a bad turn. SC2150, why is it if somebody has an opinion, you write an epistle that boasts your expertise, accomplishments, and one-sided thinking? Then you call them out to prove their qualifications??

All the OP did was ask if anybody has seen the problem before. Your installation specs were helpful, then you start puffing out your chest in defense of what? Nobody on these forums questions your knowledge or abilities. You shouldn't question theirs, either.

State your opinion and move on. God.

Agree 100%

[dekan513]

ty guys , ive read over this thread a few times and tryin to figure out where he thinks im coming off like that. i just kinda giving aheads up and lookin for info. i never claim to build any of these engine or say im a builder. all i said was i helped do a few sbc with my dad. never degreed a cam in my life and had good outcomes. but anyway sorry if anyone thinks im out to bash anyone. if i bought a cam tomorrow it would be comp.

[CGT]

Originally Posted by dekan513

ty guys , ive read over this thread a few times and tryin to figure out where he thinks im coming off like that. i just kinda giving aheads up and lookin for info. i never claim to build any of these engine or say im a builder. all i said was i helped do a few sbc with my dad. never degreed a cam in my life and had good outcomes. but anyway sorry if anyone thinks im out to bash anyone. if i bought a cam tomorrow it would be comp.

I also dont see where you instigated or insinuated anything, but does seem typical for this forum. Its labeled an engine or tech forum, I know its not highly technical here, but doesnt seem that anything technical from anybody outside of a vendor is welcome. This kind of behaviour actually stifles the learning process for beginners who may be eager to learn here. There are times I feel like I could help people on this board, but I know I will just get shouted over by one of the local "experts".

[thahemp]

Originally Posted by SC2150

And Hemp, your hearing something different than I described. Factory sounds that are issue are piston slap, and of course the ocaissional failure of a lifter or rocker bearings on stock GM parts, and they are prettty rare.

It's not piston slap or a bad lifter. It's 100% coming from the valvetrain, and 100% sounds like incorrect preload, or some spring-related issue. I don't worry about it since everything is still stock and most everyone I've talked to says theirs sounds the same way. It's just a noisy valvetrain. I just figured maybe it was a good example of shortcutting the proper setup procedure as was discussed.

We all realize you know a lot about cars... You're coming across very harsh in this thread.

[SNSSTR]

Originally Posted by strych9

Man, this thread has really taken a bad turn. SC2150, why is it if somebody has an opinion, you write an epistle that boasts your expertise, accomplishments, and one-sided thinking? Then you call them out to prove their qualifications??

All the OP did was ask if anybody has seen the problem before. Your installation specs were helpful, then you start puffing out your chest in defense of what? Nobody on these forums questions your knowledge or abilities. You shouldn't question theirs, either.

State your opinion and move on. God.

He's definitely not acting like he wants any business from anyone. I read this thread because I was interested to know what's going on with comp cams since I'm purchasing cams soon. Is it wrong to be able to do research and read threads where people can talk about the potential issues with a certain cam or any cam for that matter? Just because I read this thread about comp cams doesn't mean I haven't also read 10 other good ones about them.

Chill out SC2150...that's all I gotta say.

[thahemp]

Originally Posted by CGT

I also dont see where you instigated or insinuated anything, but does seem typical for this forum. Its labeled an engine or tech forum, I know its not highly technical here, but doesnt seem that anything technical from anybody outside of a vendor is welcome. This kind of behaviour actually stifles the learning process for beginners who may be eager to learn here. There are times I feel like I could help people on this board, but I know I will just get shouted over by one of the local "experts".

I was gonna bring up your thread earlier, but I wasn't going to be able to link to it from my phone. I wanted to help make Tracey's point in a more clear manner by showing everyone the PROPER way to chase down a failure before claiming a manufacturer blew up your engine, and how difficult it can be to PROVE that a certain part was the first failure in a cascade.

I feel like that would have been overlooked due to the tension though. People aren't going to feel like learning when there's drama to be had. You make a good point.

::EDIT::

Sorry, that was CFD in the thread I was thinking about. I get you guys confused sometimes!

http://www.camaro5.com/forums/showthread.php?t=280655