Originally Posted by The_Predat0r

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...

Originally Posted by sr20det91

Heres the thing. You cant just look at the timing marks on the valve cover. You gotta pull the accessory pully and check the mark on the crank also. You also have to be sure you dont have it 180 degrees out of phase, because the marks will be lined up, but wont be in time.

Another thing, just because you put HKS 272s in afterwords dont mean a thing. For one the damage is already done and 2 you may have got it right the second time. Its pretty obviouse you guys messed up. I'd cough up the dough and make your friends car right again.

Originally Posted by onpol

Me and my old friend did the cam installation on this car. First of all i will try to explain things as they happened i'll try to be brief and please spare my english we in Puerto Rico don't practice it very often and it is a little hard to explain this things in this language. We installed the cams and cam gears and before we started the car as we always do without the valve cover installed yet we spinned the engine by hand with a 1/2 racket and ext. to see if everything was smooth.We turn the engine and it made a weird sound so we put the valve cover on no bolts on it just to see if all the marks were aligned they were perfect so we took the valve cover out and slowly turned the engine and we noticed that the valves on piston 1 and 4 were staying open and when the engine return to tdc the pistons were pushing them back and that was the source of the hard ticking sound. I called the owner of the car for him to see it and we then source a set of 272 HKS. We installed the HKS and turn the engine and it was super smooth and we checked the marks on cover and engine they were fine so we started the car.The was messed up it didn't idle and when it got to normal temp it dies and it was hard to start it again so we checked compression piston 1 had 0 piston 2 had 147 piston 3 had 136 and piston 4 had 0. It was obvious it had valve damaged. We took the head out and took the pictures. Today we installed a head back and the car started with no problems.

I know i'm not perfect maybe i made a mistake but we have to measure the cams first to determine who to blame.

Here are couple of pictures of a set of GSC i tried to installed on my car and as you can see they were defective. The cams did not fit so i send them back to greg at gsc and he gave my $ back that was fine for me i'm not a whining internet racer like a lot of people on the forums so i kept my mouth shut and did not post here about it. So out of 250 sets they made is absolutely posible the machine cut one really bad. I have more pictures if you need them.