it sucks to say it was the installer because he's already worked on so many other evo's, but at the same time it is just possible he missed tdc with the timing belt. and their right, he couldve just gauged the cam to check the specs on them rather then installng another set.

 

I would also have to agree with the other people saying its not the cams. I have there cams and I was told by my installer that making sure the timing is not messed up would be the BIGGEST problem. My Cams work great I have GSC 272's

 

Put it this way. if i installed the cams on your car, screwed up the timing so that the pistons and valves collided, then wanted to get away with it because my customer wouldnt know better, I'd switch the cams, install them correctly, run the car, and prove that it was likely the cams being ground wrong instead of me installing the cams correctly the first time. I can almost guarantee the cams are spot on as far as their ground, I would bet my entire lineup of cars that it was your low quality, scumbag installer.

 

Calipers will quickly tell you whether to bill GSC, or your mechanic. It is quite plausible it was more than likely the latter. However, until YOU measure them, YOU will never know who screwed up now will you?

 

Couple months ago, I installed my own GSC 272/272 cams. Had no problems with them. Couple months later, I installed cam gears and while I had the valve cover open, I inspected my cams since some people posted about their GSC cams cracking. They looked fine as butter. Like people said before, timing could be off just a little bit or the installers could have skipped a tooth accidentally.

 

In the time it took you to post on this forum you could have mic'ed all the lobes 5x over and found out whos fault it really is....

 

I think thats exactly what happened...

 

**cough** Installer **cough**

 

Logically-ONE set of cams going bad, and how many people have been running a number of cams setups from GSC? It would seem the more FLEXIBLE variable is installer error. even though they have done this many times, in fact, human error is 90% of all problems developed with car mods and parts. Good luck nonetheless

 

If I was a mod on this site, i'd be changing the title of this thread to "Bad install on cams bent my valves.".

Give me a break.

 

That's why I rotate the crank 720 degrees, with the T-belt on with a ratchet by hand , after a cam install before I fire it up. Just to make sure that the valves are not hitting. ( spark plugs out. )

If I just feel a slight resistance. I just back off and re-check the timing.

Sorry to say it but most likely it was an installer error.

 

Guys, I was there and I took these pictures! This wasnt installer fault! it was a problem with the cams!

They have installed tons of HKS cams including my car, the installer really know what he is doing. They have only tried to install 3 sets of GSC but many many HKS. The first set of GSC they installed went without a glitch and the car runs great! The second car was the car of the installer, that second set also had a bad cam that woudnt fit, I remember we had to install a set of HKS that we had on site for other car and everything worked right, we called Greg from GSC and we shipped the cams to them and he refunded the money. Now months later and many cam installations later they try to install a third set of the GSCs and the cams also have problems, thanks God they never started the car with those cams! Evosorio had to drive for an hour for a new set of HKS, they installed the HKS and we didnt hear the problem anymore. We started the car and noticed the problem, it sounded like a compression problem, did a compression test and decided to take apart the motor, and then found out what you can see on the pictures!

Its definitely not an installer problem. The installer follows the recommended procedure and uses the tensioner tool etc. I trust this guys 100% and he has worked on all of my cars for many years, and he has been a race mechanic for many years with Mitsu engines, he was the mechanic of the world fastest door slammer for many years, 7 seconds Mitsu engine, also I was also there and saw everything.

Evosorio had to wait for one week for one of the cams and that was the one that caused the problem. Apparently a bad batch! but its the second time with only 3 sets! The first problem was that it didnt fit so it didnt caused any problem and we swapped the cams for a set of HKS, but this time we have some damage.

We are not trying to affect the reputation of GSC, but we simply wont recommend GSC cams to the locals anymore because of this bad experiences, we never had an issue with tons of HKS installed. The mechanic was telling me that he didnt liked the finish of the GSC cams and apparently on the new ones it was fixed, but still we are having other problems.

And dont simply blame it on the installer, we are trying to contact a local shop so they can measure the cam so we can get more info on whats wrong with the cam, one of the mechanics will post later and give specific details of what happened, I am not a mechanic and dont want to deal with the details. Thanks...

 

i usually rotate the engine 4 times before i start the car...just to make sure everything is fine..this seems like installer fualt..and hes trying to get away w. it..measure the cams..then you would know for sure who to blame...

 

yes, thats what he did, he never started the car with the GSC, he rotated by hand and apparently the cam caused the valve to stick on the bottom and apparently when the piston hit the valve it went up causing a loud noise. A few hours later when we got the HKS we started the car for the first time and noticed the compression problem.

As I told you, the guy knows what he is doing...

 

Hey guys, we are posting this because we are trying to find if someone else had problems with any other bad cam. I am sure it wasnt an installer problem, the owner of the car knows it wasnt an installer problems and all other guys there know it wasnt an installer problem.

You are not helping at all trying to blame the installer, who is one of the bests. We just think we should share our experience and we want to know is this has happened before.