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Cracked plug no good. It was probably arcing out of that to your header or something. Do you have the AIR hooked up or no? I leak could cause unwanted 02 pre sensor.
Yes both AIR tubes are hooked up. I ordered new AIR tube gaskets from GM. Also, do I need to get new spark plugs again or should I just reuse them. I have a few spare used ones I could use to replace the cracked one.
Made some progress, got cylinder 1 to TDC, took off the springs and found this.
The exhaust seal is lifted. Since im changing them, i took my dead blow hammer and 12 point 11mm socket and gave it a few whacks. It deffinatley went down some. Im still able to lift the valve spring seat a little, but less then before whacking it.
my theory is that TSP sold me the wrong seal kit, as they were all blue. If only the exhaust seals are lifted once i go threw all of them, it means that indeed they sold me only the intake ones as my the Fel-Pro kit I got has different exhaust/intake seals pictured below
Hopefully im on the right track.
#1 pushrod clear? Not positive with the LS, but generally oiling is through the pushrod. How does the valve stem tip look? Should be hardened, and may be fine. Definitely change the rocker. The seal problems you've seen are new to me.
Now ive got a problem, I want to start the torquing procedure for the rockers, but they are all loose. I cant watch the valves open. What should i do?
I have a endoscope, so I can use it to watch the piston move as I turn the crank. Any use of this??
I worry that the rocker tip should have been hardened, and now isn't, and I would at least hone the end of that valve stem before it eats into the rocker tip. You're running net lash rockers? The ground tip is going to change that rocker's relationship to the pushrod and lifter. I think it will be by the inverse of the rocker ratio, so if you ground off .010, the pushrod will be .006 short. On second thought, that may not matter much to preload. Of course, if your running a lash of some sort, that goes out the window.
I worry that the rocker tip should have been hardened, and now isn't, and I would at least hone the end of that valve stem before it eats into the rocker tip. You're running net lash rockers? The ground tip is going to change that rocker's relationship to the pushrod and lifter. I think it will be by the inverse of the rocker ratio, so if you ground off .010, the pushrod will be .006 short. On second thought, that may not matter much to preload. Of course, if your running a lash of some sort, that goes out the window.
i am running the stock rockers with a CHE trunion upgrade.
car is running good, no more smoke. But I really f'ed my self up. I cross threaded a sparkplug on cylinder 6!!!!!
i got it in deep enough to run..i dont know what my next move is but im really disappointed right now...
Get a tap put grease on it and run it in a little back it out clean debris off and repeat until its smooth sailing. Stock ls rockets are just torque to 22flbs. Some people freak out but there is no need to find tdc. I've done this many times. As u tighten the bolt make sure rocker is lined up with valve stem.
I ordered the back tap from Powerbuilt on Amazon... if it doesnt work and cant get spark plug back in I will bight the buillet and take off heads snd maybe send to Mamo to get ported.
what head gastket kit do you guys suggest if I plan on going turbo down the line?
i also ordered 1 new rocker from GM and they said intake valves are discontinued as well... so gotta find one too
O.K., unless I'm mistaken the big take-a-ways are:
1) running well with no cracked insulators
2) no smoke with good seals
I think you've done very well, other than the cross-thread thing. If you can afford the time and the dollars, by all means have the heads worked. Won't be surprised if the crossed threads drive a suggestion for a different head at Mamo.
If you can't afford the time and money, use a proper chase to clean up the threads, install the plug at 11 lb/ft (132 lb/in) torque, and run it until something else goes wrong.
O.K., unless I'm mistaken the big take-a-ways are:
1) running well with no cracked insulators
2) no smoke with good seals
I think you've done very well, other than the cross-thread thing. If you can afford the time and the dollars, by all means have the heads worked. Won't be surprised if the crossed threads drive a suggestion for a different head at Mamo.
If you can't afford the time and money, use a proper chase to clean up the threads, install the plug at 11 lb/ft (132 lb/in) torque, and run it until something else goes wrong.
Thanks for the motivating words. And yes, that sums up the situation.
I found this on the C5 Classifieds.
Would these do good? Will I lose my pushrods and trunion upgrade with these heads?
09-19-2018, 02:58 PM
