At last it has came to this....Cam Install

[steven2680]

What's the update

[steven2680]

:popc orn:

[mandra]

I feel for you. Nothing worse than a problem after the install. Sounds like something found its way into the cylinder. It would explain the spark plug and the valve issues. Hope I am wrong.

[Rjgreen2]

Another update, So I talked to my shop yesterday, he recommended scoping it. So I brought one home from work and checked out cylinders 1, 3, and 5. Then I called it quits. Cracked a beer and relaxed on the couch. I did manage to snap a photo of cylinder 1 and it kissed. Its hard to tell by my photo but I plan to do a more in depth scoping out of all the cylinders with better pictures and those I will post when I am down. My main concern is cylinder 4. I talked with the shop again today and gave him a brief run down on it. To help with the labor charges I will go ahead and take the heads off since it has to happen anyways. Again, I will post all kinds of pictures up once I get them. Basically yes, the timing was off, my screw up, expensive lesson learned but believe it or not I am ok with it. S#$* happens right? lol

[realcanuk]

Good attitude there. It sucks but you learn from mistakes. Good luck getting it all fixed up and if you need any advice, just ask away.

[376LS3]

Originally Posted by Rjgreen2

Another update, So I talked to my shop yesterday, he recommended scoping it. So I brought one home from work and checked out cylinders 1, 3, and 5. Then I called it quits. Cracked a beer and relaxed on the couch. I did manage to snap a photo of cylinder 1 and it kissed. Its hard to tell by my photo but I plan to do a more in depth scoping out of all the cylinders with better pictures and those I will post when I am down. My main concern is cylinder 4. I talked with the shop again today and gave him a brief run down on it. To help with the labor charges I will go ahead and take the heads off since it has to happen anyways. Again, I will post all kinds of pictures up once I get them. Basically yes, the timing was off, my screw up, expensive lesson learned but believe it or not I am ok with it. S#$* happens right? lol

Didnt you turn the motor over by hand at all after the cam went in? If you tightened the rockers on the base of the cam lobes, I wonder why it didnt hit then? Sucks to say but glad it was user error than the cam being ground wrong. That could be devastating to a company!

[vroomapunk]

Glad you are on your way to getting it fixed, sucks man

[Ron_Robinson1]

Originally Posted by Rjgreen2

Another update, So I talked to my shop yesterday, he recommended scoping it. So I brought one home from work and checked out cylinders 1, 3, and 5. Then I called it quits. Cracked a beer and relaxed on the couch. I did manage to snap a photo of cylinder 1 and it kissed. Its hard to tell by my photo but I plan to do a more in depth scoping out of all the cylinders with better pictures and those I will post when I am down. My main concern is cylinder 4. I talked with the shop again today and gave him a brief run down on it. To help with the labor charges I will go ahead and take the heads off since it has to happen anyways. Again, I will post all kinds of pictures up once I get them. Basically yes, the timing was off, my screw up, expensive lesson learned but believe it or not I am ok with it. S#$* happens right? lol

That's honestly how I would take it. Sucks at first, but you did it and learned. I gamble everyday on the stock short block, and ECS is giving me more boost and new tune on the 11th, can shit break...yup. Will I be okay with it...yup. We pay to play. Keep us posted on everything..

[CGT]

Originally Posted by 376LS3

Didnt you turn the motor over by hand at all after the cam went in? If you tightened the rockers on the base of the cam lobes, I wonder why it didnt hit then? Sucks to say but glad it was user error than the cam being ground wrong. That could be devastating to a company!

With a hydraulic lifter, alot of time when the valves hit when rotating by hand. It will just compress the lifter, rather than stopping the engine. Their is roughly .220 travel in the lifter.

[the rich dude]

What he said ^^^^^^

[vroomapunk]

Originally Posted by thahemp

Use a dial indicator and checker springs. Rotate the piston to the spots most likely to have interference and push the rocker down until you feel the valve touch the piston. The distance you pushed the valve down before it touched the piston is your clearance.

So if the valve barely moves, or doesnt move at all when the piston is a TDC, the cam is probabaly off a few degrees like the OP?

Is it necessary to do this method and the clay on the piston method?

[the rich dude]

You can't do clay on the piston without removing a head. Dial indicator is more than enough. Find tdc and check piston to valve. Then rotate engine 10 degrees in both directions and see if piston to valve tightens up. If it does go another 10 degrees in that direction. Keep going till u find the tightest spot. Not sure what guys are recommending as the tightest distance for a LS3?

I'm used to measuring strictly race motors with solid rollers

[376LS3]

Originally Posted by CGT

With a hydraulic lifter, alot of time when the valves hit when rotating by hand. It will just compress the lifter, rather than stopping the engine. Their is roughly .220 travel in the lifter.

Wow, that's crazy! I didn't know they had that much travel in them. Thanks for the info!

[techinny]

It sucks to have things like this happen, but you do have a good attitude about it, so good luck, unfortunately I think trying to meet a deadline (to make it to the tuner appointment) may have played a role in it. At least that is my experience.