05-13-2016, 11:53 AM | #1 |
Drives: 2010 Camaro SS Join Date: May 2016
Location: Dallas
Posts: 8
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LS3 Valve Broken in Cylinder. Any Help!
I recently had problem on my LS3 it started with a really light ticking with a check engine light P0305 i did some research and saw these have lifter and valve issues. I bought 5602 morel lifters from TSP since i do push this car a bit more than usual driving. i also got a TSP Stage 4 Cam package while I was at it.. i drove the car for about a month and a half since i requested my vacation so i can open the motor and change the lifters... 1 DAY BEFORE VACATION!! THE LAST DAY!! My engine stated knocking and lost power drastically at 30 MPH... next day I opened the motor and the Cylinder 5 Intake Valve Broke.. My question is by the looks of it how bad is this damage... i turn the crank and the cylinder goes all the way up.. compared it to bank 1 cylinders and looks like its the same only the top is cut.. I'm replacing the head.. seems everyone is going to the 823 instead of the original 821.. Also bought a new piston from Graff Chevrolet for $94 since i dont wanna upgrade n do any big modds while im still paying the car off... Any help! Thanks!
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05-13-2016, 01:42 PM | #2 |
USMC 1980-1990
Drives: 2010 Camaro 2SS/RS Join Date: Apr 2012
Location: MI
Posts: 478
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Ouch, when you pull the piston check the rod and bearing and make sure there isn't any damage to them. Have the head checked for cracks, have a new valve seat installed and cut and a new guide and valve installed. Also clean up any burs or marks in the combustion chamber on the head. And make sure the shroud (?) over the spark plug hole is not damaged.
One other thought, when you pull the rod off check the crank over really good and check the front to back movement on the crank to make sure you didn't bend anything else. When you stop a piston like that it can cause damage to the heads and the bottom end of the motor. Post up some other pictures after you clean it up and before you put it back together. Good luck on your project.
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USMC 1980-1990
My other toys are Harleys |
05-13-2016, 02:53 PM | #3 |
Drives: 2010 Camaro SS Join Date: May 2016
Location: Dallas
Posts: 8
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Thanks! Im replacing the heads, this head is ****ed really. the only thing that worries me is my crank and rods. when im checking for this damages is it something noticeable or something that has to be checked with measuring tools??
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05-13-2016, 03:26 PM | #4 |
Drives: Love the one you're with Join Date: Sep 2009
Location: Downtown Charlie Brown
Posts: 11,850
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Did it mess up the cylinder walls? I dont know how it couldn't have. I doubt it hurt the crank. You have to drop the pan to change the piston. When you pull the piston, take the rod to a machine shop and have it checked or just get a new one if cost is your conern. If that was mine the motor would get pulled and completely gone over.
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05-13-2016, 05:21 PM | #5 | |
Drives: 2010 Camaro SS Join Date: May 2016
Location: Dallas
Posts: 8
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05-13-2016, 08:34 PM | #6 |
Drives: 2015 CAMARO Join Date: Sep 2015
Location: Illinois
Posts: 168
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Wait.....do you seriously have oak parquet flooring in your garage, or did you roll the engine into the dining room? LOL
Totally sucks about the broken valve. How did that happen? Did you find the root cause? |
05-13-2016, 08:38 PM | #7 | |
Camaro: A Legend Reborn!!
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You got that motor out quicker than a dealership! Good luck with your repair, sucks but looks like you know what your doing!
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05-13-2016, 11:29 PM | #8 |
Master ASE, GM, LSX Tech.
Drives: 2010 Camaro SS Join Date: Oct 2012
Location: Austin, TX
Posts: 1,034
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All I see is the horrible wood flooring, the shitty yellow engine stand and the "Prince" Purple Rain background. WTF is going on here?
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2010 2SSRS A6, Custom Pat G. Cam, WCCH Cylinder Heads, Kooks Headers/Exhaust, BTR Valvetrain, Fluidampr 25% UDP, All Engine ARP bolts, Flex-a-lite radiator/Trans cooler, Yank converter, PFADT Suspension, ADM Race Intake/Scoop, Torq tow hook, CFD auto shifter, Dynojet AFR gauge, Aeroforce scan gauge, Brake Performance rotors/pads
Prothane bushings, ZL1 wheels, spoiler, Z/28 wickerbill, 1LE Aero/Suspension Package, Anderson Composites COPO Carbon Fiber Hood, LED lighting, Elite Catch Can, Improved Racing oil pan baffle, crank scraper, windage tray 480 RWHP 452 RWTQ + Nitrous Express 150 Shot |
05-16-2016, 12:31 AM | #9 | |
Drives: 2010 Camaro SS Join Date: May 2016
Location: Dallas
Posts: 8
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And i highly believe it was just the valve. A while ago i down shifted to first gear instead or 3rd gear. RPM went above 8500. And i was doing around 60mph! So yea not a fun situation lol Last edited by erigarcia5; 05-16-2016 at 12:50 AM. |
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05-16-2016, 12:36 AM | #10 |
Drives: 2010 Camaro SS Join Date: May 2016
Location: Dallas
Posts: 8
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Thanks. The removal is super easy but putting it back together is another story. Lol so far i just bought the piston and rod along with new bearings. My damage wasnt to critical so spending 200 on that is better than a new rotation assembly any day!
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05-16-2016, 12:48 AM | #11 |
Drives: 2010 Camaro SS Join Date: May 2016
Location: Dallas
Posts: 8
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Sorry bro i thought this was a car website not house remodeling station.. i rent here temporary really dont give a **** how da shit looks or stinks. And the purple is a black curtin just a sunny day outside seems to be normal when you apply light behind it. Ill check for a recall if that satisfies you?!. And If you like it. Walmart has them for like $4 on isle 340. And the shitty stand yes i know ive had it for about 6 years lucky it aint broke yet. I guess what ever works works type of deal. This is day 6 and its still standing. Totally worth the $20 i paid for it! Yeeessss!!
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05-16-2016, 02:30 AM | #12 | |
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Roto fab,stainless power works long tube headers,atak cat back exhaust,cat delete and dyno steve custom tune.
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05-16-2016, 11:16 AM | #13 |
Drives: 2010 Camaro SS Join Date: May 2016
Location: Dallas
Posts: 8
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lol you sure do. for now GM called me that the parts weren't delivered so just waiting on that. A friend of mine said the head can be fixed and just buy a new valve or upgrade valves since the factory hollow valve seemed to be a problem on LS3s. another things was to switch to 823 casting heads. same head just different valves. mine are 821 casting heads
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06-20-2016, 05:11 PM | #14 | |
Drives: 2010 camaro 2ss Join Date: Mar 2015
Location: sinking spring, pa
Posts: 38
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