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Old 10-03-2003, 01:57 PM   #1
Jeacra
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Thumbs down Warning: Cobb Cams

These are in a 2.5rs SOHC. Mild Cams

I bought these a little over a year ago. I was told by Trey that this was the best way of doing the cams, what the call ( hard- welding )

Well one of the welds on one lobe has come apart. I have taken the cam to a machine shop and to a welder and they both have said that the one lobe had air pockets so it was a bad weld.

I sent the cam to Cobb so they could look at it. They said to me that it doesn't look like I changed my oil on time. Thats crap because if anybody knows me I change my oil every 2000 -2500 miles.

So they said that they will pay for half ( $250 ) of new cams which is like $500 I think. I have to rebuild my whole motor now because I have metal pieces floating around which are going to cause more damage now. All I want from them is 2 new stock cams. If they are willing to pay for half of the performance cams wouldn't that be half?
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Old 10-05-2003, 06:46 AM   #2
Paul Sakai
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Wow thats too bad. Just a thing for when you get new cams send them in for Xray to check for bad welds. It'll save you from having to rebuild a motor again.
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Old 10-05-2003, 08:34 PM   #3
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Wow that sucks. The right thing to do would be to just send you a replacement cam and an apology, not an excuse. I purchased an Sti engine mount that never reached the 50ft-lb spec because the stud started spinning inside the mount... I called and they said "just send it back next time you have a chance". I hope I dont have this problem when I finally return it.
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Old 10-06-2003, 12:22 AM   #4
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cobb
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Old 10-07-2003, 07:18 AM   #5
codger
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I was considering getting cams, and Cobb was high on the list. After hearing this I'm certain on just keeping the motor stock, and eventually trading in for something with a turbo 2.5
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Old 10-17-2003, 10:26 PM   #6
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Spray welding...not a good choice for a performance engine.
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Old 10-19-2003, 02:22 PM   #7
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wow thats shady...guess i wont be buying cobb cams then. maybe if we got some more publicity (post on wrxforum?) theyd recant and fix it?
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Old 10-19-2003, 08:28 PM   #8
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Spray welding is the cheap way to do cams.
The best way would be to grind their own from a blank and not spray some questionable metal over a 2.5 cam and then cut it.
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Old 10-19-2003, 09:05 PM   #9
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Old 10-22-2003, 01:46 AM   #10
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Write a letter.
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Old 10-24-2003, 02:54 PM   #11
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--snagtastic-- of course josh is going to say it was some other fault. funny he said in 3 years hes never seen any cam problems. How many cams could they have sold in 3 yrs, and how does he get to be an expert in their special way of welding (bs)

I've taken this cam to Real experts and they were the ones that told me that lobe had an air pocket from welding. There is nothing wrong with any of the other lobes.

Funny, if it was something I did wrong wouldn't the rest of the cam be messed up too?? Thats just a quick way of putting the blame on someone else. Its just one lobe!!! I am a mechanic and I did follow the proper procedures. josh says that there is bearing wear. more(bs) . When the weld broke then there would be pieces of metal wearing other parts.

And yes it was over a year but the car is hardly driven and garage kept so whats a year really.

Again if they are willing to pay half of new performance cams wouldn't stock cams be half???

It was just One lobe out of 12
It was just One lobe out of 12
It was just One lobe out of 12

Last edited by Jeacra; 10-25-2003 at 12:26 PM.
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Old 10-24-2003, 05:01 PM   #12
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I know of someone else who has had this happen with cobb cams too. Im really glad I never bought a set.
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Old 10-25-2003, 07:45 PM   #13
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they will only pay for half , what a burn they should fully refund your cash or give you a new cam
tell them fine you will have them pay for half of the engine rebuild
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Old 10-26-2003, 10:46 AM   #14
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Exactly, the engine is probably no good anymore
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Old 10-27-2003, 04:21 PM   #15
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Complain all you want, but I would take the offer you have been given. If it has been a year, the cams should be out of warranty and you should be responsible for it all. Instead they have made an offer to help ease the burden. To believe they should simply provide a new set of cams to you at no cost is ludicrous.

Before you go disrespecting what Josh knows about the cams, he has been there for quite a few years now and actually does a lot of the welding (not cam welding) in-house at Cobb and Modern Garage. He works with some of the best minds in the business and has so for quite awhile so the experience is there. Ever been to their facilities, talked to Josh or Trey face to face, shot the ****, talked tech, whatever without a negative attitude? You would be astounded by the knowledge there.

As was said before, unless they knew exactly what went on with the car from day one, it is hard to eliminate all possibilities that point to a manufacturers defect. If it was abuse or neglect, even that wouldn't necessitate that the entire cam would mulch all at once. This would be a catastrophic failure and rather unlikely. The weakest point will give. Having a bad lobe doesn't immediately mean one thing or the other.

I have personally installed these cams and used them in my car for 1.5 years and over 20k miles with no problems. (this was one of their first sets of cams from back in early 2001). There are a lot of variables present when installing/maintaining them that could cause problems. Heck, it could be as easy as setting the valve lash too tight causing excessive wear on the lobe which led to a premature failure. You just never know.

This kind of bashing just puts me in a sour mood.

-Jon
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Old 10-27-2003, 07:36 PM   #16
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Quote:
it is hard to eliminate all possibilities that point to a manufacturers defect.
I thought the air bubble in the lobe would be a manufacturers defect?

Spray welding techniques are used for one thing....save money. You typically find spray welded cams in rebuilt engines you can buy at Pep Boys for el cheapo dinero. Granted maybe one out of a thousand would fail.
If Cobb were to grind their own cams from cam stock...you would be paying twice the price.

Take the offer... Half is better than nothing. Last time I checked Cobb was not part of the Wal-Mart dynasty.
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Old 10-27-2003, 07:39 PM   #17
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Quote:
Originally posted by Skullskidr
I thought the air bubble in the lobe would be a manufacturers defect?
I wouldn't consider an air bubble to be a normal thing. However, it also doesn't mean that it wasn't within the manufacturer's tolerances even with the bubble. It is entirely possible that this could have sustained normal wear and tear and never see a failure. Only once adverse conditions outside of the acceptible tolerances were introduced did it aggravate the flaw. Not saying that is what happened, but it is possible. Just because your cylinder wall may be out of round by a few thousandths doesn't mean it is outside of spec.

-Jon
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Old 10-27-2003, 07:57 PM   #18
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True, I agree that the cam might not be out of spec on the outside. I agree the air bubble is not a normal thing. However, due to engine temperatures it is possible for the air inside the bubble to become super heated and expand under normal driving conditions which could have caused the one lobe to fail.

I would compare it to having a bolt with a defect in it. It is a bolt, it looks like every other bolt, it fits in the same hole as every other bolt, it might even be marked "grade 8" but you put just the slightest amount of pressure on it and snap you are wearing a band-aid on your knuckle. Certainly not the characteristics of your normal grade 8 bolt.

But, I do think that Cobb is doing the right thing from a customer service point of view. Since the cams are well out of warranty by now they really could tell Jeacra to go pump sand and they would still sell cams from here on out.
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Old 10-28-2003, 11:23 AM   #19
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From day one when I bought the cams I had trouble with cobb. They said the cams come with instructions, it was missing 2 pages. Then they sent another set of instructions and they were faded, could not read completely. Had to waist time on the phone filling the faded parts.

Sounds like real pro's to me
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Old 10-28-2003, 07:22 PM   #20
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"Sounds like real pro's to me"

You must have some grudge against cobb, i know NUMEROUS people who either couldnt figure something out or were having problems, and they said cobb spent endless time on the phone talking them through and getting everything solved.


Cobb is the only tuner in the USA who has reverse engineered the ECU, they know more about the wrx than any tuner in the USA.

Stop the hate.
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Old 10-28-2003, 09:51 PM   #21
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If you know numerous people that were having problems, Doesn't that say something

And how does this get to a wrx and an ecu topic???
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Old 10-29-2003, 12:12 AM   #22
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Quote:
Originally posted by Jeacra
If you know numerous people that were having problems, Doesn't that say something
Yeah, it means there are people out there getting over they heads and they have offered their time to help bail them out.

-Jon
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Old 10-29-2003, 04:32 AM   #23
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The "air bubble" sounds like what is commonly known as trapped slag in the weld. It IS a welding error, it DOES cause extreme weakness in the weld. Cobb welded it, it's Cobb's fault, and they should give you what you're asking for (two stock cams is a small price for them to pay). Get a written inspection performed somewhere (any welding shop can do it, but some might not want to) about the trapped slag and bring it to Cobb and discuss it with him again.
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Old 11-12-2003, 12:00 PM   #24
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thanks StomprGriz

haven't checked post in awhile
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Old 11-28-2003, 09:39 PM   #25
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A year without changing oil could lead to a "dry start", which might aggravate the problem???? (big question mark)

Take the new cam :wink:
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