I had this can installed:



I drove the car less than 500km, and followed those directions. I lost almost a quart of oil, and the car was smoking worse, not better. I also got a loud tapping noise from the top of the motor. Needless to say its at the mechanics, again. He's doing tests for compression etc., says there is no way that the can is responsible. Anyone else have any ideas. I undid the hose from the intake and put it back in the PCV valve, and the noise became less, but not gone.

 

Here is the install instructions, I am curious if they are routed correctly or not.

I did not realize the website would time out the link, so these are in pdf.

 

I know we have been going back and forth on PM's about your issue.
I feel bad your having this issue.
I wish I was more of a "motor" guy and had better suggestions for you.

I have heard that if the catch can is installed backwards then it can cause oil usage issues. But your confidant that its installed correctly.

Post here your entire issue with your engine smoking.
I only hope someone will have a good suggestion for you.

It could be the valve seals as we were talking about earlier ...

I would let the pro's look over your motor to see what they can find.
I just hope its something easily fixed.

Wish I had more answers for you.
Toque

 

I appreciate it Toque. I just sent you a PM as a matter of fact. It smoked at idle when I was getting a coffee not two days after I had the can installed. They followed the directions explicitly, I just want someone with experience in these catch cans to look at the directions, and make sure it was routed properly by the instructions. As I said, my mechanic doesn't think the can is responsible at all, but why did the tap start two days after? The timing is uncanny. It was running great up till then. I can't say to much more other than the back bumper is fouled, oil coming out rather badly. Your probably right, I will be on the hook for seals, or worse. Not sure. Have to wait till he runs his tests.

 

Here is my catch can and how its plugged in.

 

Apparently I am reading the flow of the can wrong, it goes in through the long hose, and then into the intake. My mechanic did a leak down test, and it passed with flying colours, it has 180lbs compression, and he did find that one of the spark plugs was not tight. Also, he is going to take off the valve covers, and check all the valves, and the rocker arms. So, some good news. Hopefully, its nothing major.

 

Well Toque, my mechanic has gone over the whole car, taken everything off, and number seven intake valve isn't moving at all. So its the cam. The guy I bought it off of only had it a year and a bit, so its the guy before him that had the cam put in. Also, all the valve seals are shot, just like you said. Looks like I am putting some more money into the car. Oh well, its only money. Any suggestions on the cam I should put in?

 

Sorry to hear that ...

Well ... Cam choice is VERY dependent on what your end goal is.

If you want to keep is normally aspirated (no super charger or turbos), then the skies the limit. It all depends on what YOU want and how you plan to drive your car.

If you plan for a Super charger or Turbo in the future then I would suggest talking to a tuner about a cam that is force induction friendly.

I chose a mid sized cam because when I had LG's build it years ago (2006) I wanted to focus on a cam with the MOST torque as possible. I also wanted a cam that was driver friendly (good drivability).

The big question is... what are your plans ? What do you like for cam's ? Big ? Medium ? Small ?

What size cam is in the car now ?

Big cams will give you the big loud sound. The engine will lope quite a bit. It will make MAX HP. Big cam's sound great and pull like a freight train at WOT. Downsides are that they will not pull as much low end torque as mid sized cam's. They also need to be tuned by a GOOD tuner if you want decent street manners.

Mid sized cam's will give you great drivability. More torque than a big cam, but not as much high end HP. Still have a great cam sound at idle but not as aggressive sounding as a big cam.

What other mods are on the car at this time ? Head work ? Long Tubes ? Intake ? Cold Air ? etc...etc... ?

This is a choice that I suggest you do your research on. Don't just take my suggestions. Go and listen and talk with owners of different sized cams.

Toque

 

When you look at that, the original owner did everything he could to make it a Z06. He had it dyno'd at 417 hp at the rear end. I have to admit, the sound of the motor, and the feel of it, was what made me want to buy the car. The heads are still good, although the lobe of the cam wore, and my mechanic is trying to find where that steel went. Hopefully, it was in the oil, and got caught by the filter. There was no blow by on the rings, and the intake is still fine. So, right now, he is telling me cam only. I want to have it the way it was. I don't need 7 or 8 hundred horse. That 417 was good enough for me. Trust me, with Ontario's laws up here, 50km over 80, I am looking at a 10,000 dollar fine, the car impounded for 30 days, nevermind the points I will lose, and what my insurance would be after. I don't at this time have time to race it. I would love to, but I don't. My business won't allow me to. So looking at those parts, and keeping in mind what hp I like, what do you recommend?

 

I would call up that company and try to get the specs from the cam.
That way you know where your starting from.

Knowing what cam you have NOW is important before you start figuring out what new cam you want.

Toque