Siciliano15

iTrader: (7)

hey everyone, ive been trying to figure out this ticking sound ive been having for a while. basically it all started when my battery died and i had to have a taxi jump my car with cables. he was parked really close to my drivers side so i got in on the passenger side and put one hand on the gas with moderate pressure and then turned the key. when it fired up it went to like 4500rpm or so before i could get my hand off the pedal. when i let go i heard all of this valvetrain clatter for several minutes until it was about 80% gone but still its been just slightly louder than it was before the dead battery. then one cold morning months later i started up the car to a very loud clacking noise. more of a deeper note than the usual valvetrain ticking. now the clacking seems to come and go. ill get off the highway and get to a red light and hear it for a few seconds then it will dissappear and then come back later its wierd. the link below is a video i took where u can definitely hear the ticking and once in a while u can hear the lower pitched clackety sound. anyone have any idea what it can be? the ls7 lifters in my car are only about 5000 miles old.

http://www.myspace.com/video/rid/110961662

3rdCoastPowerSports

iTrader: (5)

put your video on youtube so I and others can watch it. your lifters were all the way bleed down when you went to 4500 rpms, might have fucked up a lifter. if you have a cam and aftermarket springs you might have broken a spring or if double springs maybe an inner spring. pull a valve cover to make sure its not the springs, then go from there

sepsis

iTrader: (7)

I don't have myspace and I can see the video just fine.

That's a pretty loud tick.

alcohol altered

iTrader: (4)

Are you sure that isnt an exhaust leak around the headers? Exhaust leaks are usually louder when fired cold and as everything heats up and expands it's alot less noticable.

Siciliano15

iTrader: (7)

i put new exhaust gaskets and it didnt help at all. this ticking gets louder as the engine warms up usually but not always. its pretty random

crainholio

iTrader: (2)

I'd pull the pushrods and roll-test for a bend.

Siciliano15

iTrader: (7)

good thinkin.... ill do that and check the springs at the same time. just wish i had a garage during these winter months. thanks

garygnu

also check the rocker arms for any missing bearings.

Siciliano15

iTrader: (7)

yea im def gonna check those. i have brand new slp 1.85 rockers with maybe 8000 miles on them so i hope they arent messed up already but i guess we'll see

crainholio

iTrader: (2)

What valve springs are you running?

Siciliano15

iTrader: (7)

im actually not sure. wat i can tell u is that they are dual springs with titanium retainers. they were new and already on the 243 heads when i got them along with a fresh valve-job and cleanup mill.

Siciliano15

iTrader: (7)

i guess my main fear is the rods or bearings are damaged but im not sure if it would sound like this or not. i just hope the worst case scenario is that i need to get new lifters.

crainholio

iTrader: (2)

What cam are you running?

Siciliano15

iTrader: (7)

stock for now on 1.85 rockers. bout to go with the eps 226/230 cam on 1.7 rockers

crainholio

iTrader: (2)

OK, aftermarket springs, 1.85:1 rockers, stock cam. Not a very risky setup assuming the springs were set up properly and they're not fatigued.

I'd remove and test the pushrods as mentioned previously, inspect the valve tips for impact damage or excessive wear, and go from there.

Siciliano15

iTrader: (7)

ok thanks ill let u know how it turns out

Siciliano15

iTrader: (7)

well after my cam swap and getting my heads back from A.I. all of the parts that were on the car were fine except for the spring seats. there were spring seats meant for stock or behive springs being used with my duals and they werent sitting exactly how they were supposed to but everything is back together now and the sound is gone. there still some minor valvetrain noise but its just the normal big cam sound nothing out of the ordinary like before.