What's up with Comp Cams ?
If there were 27 bad pcm I would assume there was a bad batch or a quality control issue and not blame the company, quality can differ based on the quality staff alone and what they consider acceptable, I.e who's running what machines,inspecting what and maybe there cnc machine was due for calibration and so on...
This doesn't mean your wrong because there are obviously people having problems backing you up. But that doesn't mean comp cam is forever junk, I'm sure they will, if not are already fix the problem,
since they don't plan to stop making cams
I'm sure they will satisfy any customer who bought directly from them and not used or anything, but I'm not 100% on that as I've never had a problem to call them about. Glad I didn't get a bad one lol
This doesn't mean your wrong because there are obviously people having problems backing you up. But that doesn't mean comp cam is forever junk, I'm sure they will, if not are already fix the problem,
since they don't plan to stop making cams
I'm sure they will satisfy any customer who bought directly from them and not used or anything, but I'm not 100% on that as I've never had a problem to call them about. Glad I didn't get a bad one lol
27 pages and you don't reply ? to the thread you started ?
Some people, after reading this thread, have come to the conclusion that the safe thing to do is buy a Cam Motion cam. Are you sure you know what your getting ? With Comp, each lobe profile and duration has a part # so you see duration at 0.006, 0.050 and 0.200 and peak lift. Subtracting the 050 number from the 006 number gives you the jerk intensity. XE-R, that number is 49. Many of the cams Damien found bad had XE-R lobes.
Kip has said (in another thread) that his cams jerk intensity is "around" 55 and he does not provide a 050 to 200 number. This is not because he is being evasive. When you pick a cam motion lobe you choose a lobe lift, say .365 on a 1.7 rocker would give .620 lift. Then you choose a duration from a range that can be ground around that lift. Someone correct me if I'm wrong but the .006 to .050 is always 55 unless it's a proprietary lobe like a EPS. 55 moves the valve on and off the seat gently. A good thing. Overlap also begins at .006 lift and exhaust pressure releases at .006 lift so a cam with XE-R lobes has more idle vacuum than a 55 cam with the same duration. A XE-R cam feels like a cam with a later EVO. These are real benefits that for some applications, can not be overlooked.
I'm not saying a XE-R lobe is for everybody. A XE has a JE (jerk intensity is getting hard to write) of 53 and a LXL lobe is 52. A HUC has a JE of 55
I don't care what cam you buy. I'm just saying do your homework, know what your buying. Know what combination of parts you need to make that lobe choice work and be controlled. Know about wipe patterns, installed height, lifter preload, pushrod measure , assembly lubricants, break-in procedures and oil chemistry. Even if someone else is doing the work.
Some people, after reading this thread, have come to the conclusion that the safe thing to do is buy a Cam Motion cam. Are you sure you know what your getting ? With Comp, each lobe profile and duration has a part # so you see duration at 0.006, 0.050 and 0.200 and peak lift. Subtracting the 050 number from the 006 number gives you the jerk intensity. XE-R, that number is 49. Many of the cams Damien found bad had XE-R lobes.
Kip has said (in another thread) that his cams jerk intensity is "around" 55 and he does not provide a 050 to 200 number. This is not because he is being evasive. When you pick a cam motion lobe you choose a lobe lift, say .365 on a 1.7 rocker would give .620 lift. Then you choose a duration from a range that can be ground around that lift. Someone correct me if I'm wrong but the .006 to .050 is always 55 unless it's a proprietary lobe like a EPS. 55 moves the valve on and off the seat gently. A good thing. Overlap also begins at .006 lift and exhaust pressure releases at .006 lift so a cam with XE-R lobes has more idle vacuum than a 55 cam with the same duration. A XE-R cam feels like a cam with a later EVO. These are real benefits that for some applications, can not be overlooked.
I'm not saying a XE-R lobe is for everybody. A XE has a JE (jerk intensity is getting hard to write) of 53 and a LXL lobe is 52. A HUC has a JE of 55
I don't care what cam you buy. I'm just saying do your homework, know what your buying. Know what combination of parts you need to make that lobe choice work and be controlled. Know about wipe patterns, installed height, lifter preload, pushrod measure , assembly lubricants, break-in procedures and oil chemistry. Even if someone else is doing the work.
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From: Turnin' Wrenches Infractions: 005
If I'm putting words in his mouth, then you just did the same to me. You've stated your opinion, others won't agree, others will, the point was the ONLY thing that guy is adding to this thread is that HIS particular cam is "fine". Is that supposed to be reassuring? Is that supposed to fix all the failures that are documented here? Likely No and No. That means jack.
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Just ordered up a solid comp cam today. Before they had them to your door in nearly 4 days. Today was told 4-5 days to grind and. 5 to ship. Guess I'm spoiled.
I still question what is causing the whining in the first place. Was there ever a definitive problem found? Usually only whining I get is from the person I raced.
I still question what is causing the whining in the first place. Was there ever a definitive problem found? Usually only whining I get is from the person I raced.
If I'm putting words in his mouth, then you just did the same to me. You've stated your opinion, others won't agree, others will, the point was the ONLY thing that guy is adding to this thread is that HIS particular cam is "fine". Is that supposed to be reassuring? Is that supposed to fix all the failures that are documented here? Likely No and No. That means jack.
Joined: Aug 2007
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From: Turnin' Wrenches Infractions: 005
I will agree with that. With someone as big as comp, problems will arise, no issue there. I don't think it should be swept under a rug is all.
Last edited by 01ssreda4; Nov 20, 2014 at 08:13 AM.
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How many GM vehicles were recalled since 2005? Exactly, we all know somebody and there mom who had there cars recalled to the dealer, and GM will still continue to sell the **** out of cars from a Chevy aveo to the new vette, anybody who thinks they can run a multi million dollar company without errors here and there are just crazy.
**** happens, people should be able to understand that. And comp isn't just going to turn there ringer off if you call with a issue.
COMP CAM sets the standard for performance cams. Period... despite what anybody says they will still continue there quest just as GM has... and people will continue to use there products.
**** happens, people should be able to understand that. And comp isn't just going to turn there ringer off if you call with a issue.
COMP CAM sets the standard for performance cams. Period... despite what anybody says they will still continue there quest just as GM has... and people will continue to use there products.
I just bought one of their new grinds, the LSr Cathedral Port Grind 273Lr HR12. What lobe design is this? It looks to be even more aggressive than the XE-R. Has anyone reporteed problems with this style of Comp Cam or is this a new design to fix previous issues.
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How many GM vehicles were recalled since 2005? Exactly, we all know somebody and there mom who had there cars recalled to the dealer, and GM will still continue to sell the **** out of cars from a Chevy aveo to the new vette, anybody who thinks they can run a multi million dollar company without errors here and there are just crazy.
**** happens, people should be able to understand that. And comp isn't just going to turn there ringer off if you call with a issue.
COMP CAM sets the standard for performance cams. Period... despite what anybody says they will still continue there quest just as GM has... and people will continue to use there products.
**** happens, people should be able to understand that. And comp isn't just going to turn there ringer off if you call with a issue.
COMP CAM sets the standard for performance cams. Period... despite what anybody says they will still continue there quest just as GM has... and people will continue to use there products.
The difference being if my GM car is recalled they can put a new part in it and I can be on my way.
When a Comp cam fails because it wasn't properly hardened it destroys the cam, the lifters, and possibly the bearings in the engine. Best case scenario I am out the money for lifters, head gaskets, head bolts, fluids, and a **** load of my time and Comp is generous enough to replace the cam. But my past experience has been "tough ****" and I had to buy another cam on top of that.
And for what? No point taking the risk when for about $30 more I can get a cam (custom spec'ced for my build) from some place not having the issues.
No brainer.
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And who says all them 27 were installed correctly and broken in., maybe take detailed pics of the cam/install if your worried so then you could provide proof to COMP that it was installed correctly if you did have a problem with it.
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The difference being if my GM car is recalled they can put a new part in it and I can be on my way.
When a Comp cam fails because it wasn't properly hardened it destroys the cam, the lifters, and possibly the bearings in the engine. Best case scenario I am out the money for lifters, head gaskets, head bolts, fluids, and a **** load of my time and Comp is generous enough to replace the cam. But my past experience has been "tough ****" and I had to buy another cam on top of that.
And for what? No point taking the risk when for about $30 more I can get a cam (custom spec'ced for my build) from some place not having the issues.
No brainer.
When a Comp cam fails because it wasn't properly hardened it destroys the cam, the lifters, and possibly the bearings in the engine. Best case scenario I am out the money for lifters, head gaskets, head bolts, fluids, and a **** load of my time and Comp is generous enough to replace the cam. But my past experience has been "tough ****" and I had to buy another cam on top of that.
And for what? No point taking the risk when for about $30 more I can get a cam (custom spec'ced for my build) from some place not having the issues.
No brainer.
You can go next door and get another cam yes, but when they are the leader in cams than I'm sure they will have problems here and there too...
If that comparison don't work for you than maybe this will. .. just because you grenade one ls motor motor on a Dyno doesn't make them all bad. **** happens. .
I have THE WORST LUCK ever and my comp cam is just fine so they can't be all that bad lol...
I will upload a video of my extremely embarrassing cam whine. I ordered my cam 10/14/14 so it's not a old one they custom grinded it here's part of the email. $411 dollars for the cam $260 for the dual gold valve springs $100 in miscellaneous plus $1,188. All to have my corvette sound terrible.
Here's the shop invoice.
Here's the shop invoice.
Last edited by SCHP98ls1B4C; Nov 19, 2014 at 03:26 AM.
I have a bad Comp ls cam at my dad's shop in OK, another one in my garage here, and considering my car is down about 30hp with no other problems I can find, it's making me suspect I might have another one in my car now (my EPS cam is from before the switch the Cam Motion cores). But I won't know for sure until I pull the heads.
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I will upload a video of my extremely embarrassing cam whine. I ordered my cam 10/14/14 so it's not a old one they custom grinded it here's part of the email. $411 dollars for the cam $260 for the dual gold valve springs $100 in miscellaneous plus $1,188. All to have my corvette sound terrible.
Here's the shop invoice.
Here's the shop invoice.
Realy tho you should be talking to the shop who installed it too,
why would he need to talk to the shop other than to get a new cam installed? I would let them know about the issue and converse but thats it. Theres nothing that an install can do to make a cam whine. If there was an install problem it would be much different than it sounding like a procharger.
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And he was so embarrassed since this all happens in front of 5 costumers, he just gave me the alt. Which was a 145amp alt, $330 and a good pulley off another alt they had in stock for FREE ...
I saved 330 by talking to the right person(well I was borderline yelling, well lets just say I wasn't being plesent) and taking into consideration they fucked me around. Get on there *** I don't know what else can be done other than being persistent
Exactly...why take the risk, fool me once, shame on you....fool me twice, shame on me. Way too many guys having issues, not just LS1tech'rs.