installed brand new heads, valvetrain noise has developed over time
06-20-2005, 09:46 PM
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installed brand new heads, valvetrain noise has developed over time They are Patriot LS6 stage II heads. I bought them brand new as complete units and used my stock rockers. when i first put them on, i didnt notice any noise, but over time, it has grown progressively worse and is now starting to worry me. the noise occurs in this fashion. when i am just cruising, and decide to give it some more gas, i can hear it very loud for a few seconds, then it stops. its like a ticking noise, sounds like when youre running on bad/watered down gas but much louder. when i take off from a stop sign, or just anytime the car is under load, it does it. After reading some posts it sounds like a bent pushrod would make the noise, but if thats the case, then all of my rods are bent because it is a very frequent tick, not like its coming from just one cylinder, know what I am saying? what can i do to stop this? when I installed the heads, I torqued the rocker bolts down to the right torque, as per ls1howto.com. but when I torqued them down, I didnt rotate the engine to close each valve before torquing them down (my mechanic told me i wouldnt need to). Do they just need to be adjusted or what? any advice would be appreciated.
edit: btw, i have read that ls1's are typical of having valvetrain noise, but this is just too loud for me to believe that its "normal", engine temp doesnt affect the noise, and I can hear it even with my windows up and the radio at a low volume. its embarrassing when i drive down the road.
edit: btw, i have read that ls1's are typical of having valvetrain noise, but this is just too loud for me to believe that its "normal", engine temp doesnt affect the noise, and I can hear it even with my windows up and the radio at a low volume. its embarrassing when i drive down the road.
06-20-2005, 10:03 PM
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Pull your valvecovers and look at the valve tips.. they could be mushrooming. That's the reason Patriot recalled some heads and I've had a couple of sets of heads that I've installed come back for that very reason. Check them now, before one of them drops and kills your shortblock.
06-22-2005, 10:15 AM
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Originally Posted by pbjones81
ok, but by mushrooming do you mean rounding off at the tip or something?
thanks
thanks
