help
05-17-2011, 05:36 PM
#1
Staging Lane
Thread Starter
Join Date: Apr 2009
Location: TEXAS
Posts: 67
Likes: 0
Received 0 Likes
on
0 Posts
help man right now im really depressed dam it well i need some advice i just had ls6 799's heads put on my car shop just called me said it broke so i need help find out if it is my heads, or just not torqued down enough the heads are cnc ported flow about 310cfm and are milled .20 stock valves
u can see on my sig.. what other stuff i have well he tuned it for motor ran fine then when he juiced it he said after it idled down it started clattering bad and water n oil mixed he thinks maybe a water jacket blew so i called the guy that sold me the heads and he claims no way it could of be that he thinks it lifted a head he asked what they were toqued down to that he should of torqued em down to 90pounds so i call the shop where the car is at he said he torqued them at 80 is that a big difference could it have been that? theirs no hole in my pan and it will still run just knocking and clattering any idea what could of happened if that is even possible to lift a head??? help me please
u can see on my sig.. what other stuff i have well he tuned it for motor ran fine then when he juiced it he said after it idled down it started clattering bad and water n oil mixed he thinks maybe a water jacket blew so i called the guy that sold me the heads and he claims no way it could of be that he thinks it lifted a head he asked what they were toqued down to that he should of torqued em down to 90pounds so i call the shop where the car is at he said he torqued them at 80 is that a big difference could it have been that? theirs no hole in my pan and it will still run just knocking and clattering any idea what could of happened if that is even possible to lift a head??? help me please
05-17-2011, 05:49 PM
#2
TECH Apprentice
iTrader: (94)
Join Date: Oct 2005
Location: Huffman, Texas
Posts: 300
Likes: 0
Received 0 Likes
on
0 Posts
If you have water in the oil it could be a blown head gasket. The clattering/knocking you are hearing could be a result of the oil being thinned out. being torqued to 80 sounds right if you have head studs.
What head gaskets were used?
What head gaskets were used?
05-17-2011, 06:09 PM
#3
Staging Lane
Thread Starter
Join Date: Apr 2009
Location: TEXAS
Posts: 67
Likes: 0
Received 0 Likes
on
0 Posts
05-17-2011, 06:48 PM
#4
Staging Lane
Thread Starter
Join Date: Apr 2009
Location: TEXAS
Posts: 67
Likes: 0
Received 0 Likes
on
0 Posts
05-17-2011, 06:52 PM
#5
On The Tree
iTrader: (10)
Join Date: Jan 2009
Location: Home town Houston station in ft hood
Posts: 113
Likes: 0
Received 0 Likes
on
0 Posts
if they were under torqued it is possible that the vibration loosened the bolts id say pull the valve cover and make sure all the bolts are still tight and down if it lifted at all it would have blown out the gasket
Trending Topics
05-17-2011, 08:42 PM
#10
I would be shitting a brick right about now. I can't imagine spending money on the heads and all just to f up my motor. Hell, I just bought this T/A this last week and now it needs rear end work and the motor has a nice tick... Oh well. I feel your pain at least OP.
05-18-2011, 09:07 AM
#14
Staging Lane
Thread Starter
Join Date: Apr 2009
Location: TEXAS
Posts: 67
Likes: 0
Received 0 Likes
on
0 Posts
thanks man sorry bout your rear and i did just spend a bunch of money i had just installed my moser two weeks before that plust stage 2 4l60e wich was about 6k for both so yeah i feel like shitt
05-18-2011, 09:11 AM
#16
Staging Lane
Thread Starter
Join Date: Apr 2009
Location: TEXAS
Posts: 67
Likes: 0
Received 0 Likes
on
0 Posts
THANKS FOR THE INFO everyone that wrote on here, but sorry i forgot to say they are dish pistons with valve reliefs but i went to his shop yesterday and heard it my self very loud tap noise sorta like if it is piston slap not sure though cause when u idle it the loud tap knock noise goes away and u can definitely tell its on passenger side front first piston u can put your hand on the front the pass. head an feel the tapping just wierd that it goes away when u give gas well he is gonna stick a camera down in their through spark plug hole to see if the piston looks damaged if not he thinks maybe cam bolt broke or bearing idk
05-18-2011, 11:09 AM
#19
Staging Lane
Thread Starter
Join Date: Apr 2009
Location: TEXAS
Posts: 67
Likes: 0
Received 0 Likes
on
0 Posts
