What is this noise? Video inside. UPDATE!
What is this noise? Video inside. UPDATE! Rod knock? Stuck/broken lifter? Broken double valve spring?
Ls2 70k miles
229-236(.624/.617)-112
.650 double valve springs
American Racing 1 7/8 catless
Vararam
Mustang dyno tuned at 449rwhp about a month ago. Noise started during normal driving, not hard driving.
Ls2 70k miles
229-236(.624/.617)-112
.650 double valve springs
American Racing 1 7/8 catless
Vararam
Mustang dyno tuned at 449rwhp about a month ago. Noise started during normal driving, not hard driving.
Last edited by DETROIT_AREA_00_SS; Dec 26, 2013 at 04:42 PM.
If it is internal it is most likely a lifter. You can put thicker oil in and if the lifter pumps up you can keep running the oil and or choose to change the lifter. I think that most of the lifter issues where the displacement on demand style. Like the first post check or the simple things. You can use a two by four to heat or a long socket extension. Valve train noise is more rapid than crank and rod knocks.
My lifters have always been noisy in this car, beyond the typical LS valve train noise. I have had 7 or 8 LS motors and this one has been far more noticeable. A well known LS specific shop said it was still normal though.
I will start tearing it in a week or so after checking some simple things.
I will start tearing it in a week or so after checking some simple things.
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Verdad Gallardo all of that noise could be taken out with longer pushrods possibly. recheck wear pattern on valve tops and roll your pushrods on a flat surface you could have bent one or more.
Last edited by handyandy496; Nov 6, 2013 at 10:39 AM.
When I did the cam they put in hardened pushrods, comp I think. I didn't miss a shift or over Rev, that's why I don't think it's the pushrods.
Oil pressure hasn't changed. 38psi at idle. Oil temp is normal too.
I literally just finished an oil change, put in 10w-30 Dino.... Slightly quieter but still very noticeable.
Oil pressure hasn't changed. 38psi at idle. Oil temp is normal too.
I literally just finished an oil change, put in 10w-30 Dino.... Slightly quieter but still very noticeable.
I don't think its pushrods because it has run very strong for 15k miles since cam/springs...etc were done. I am out of town for 2 days, I'll yank the covers when I get back.
Back in town....
So I started it today and the same noise was obvious... Drove it 15 miles to friend's house and now the noise is few and far between.
I am going to pull vavle covers tonight.
So I started it today and the same noise was obvious... Drove it 15 miles to friend's house and now the noise is few and far between.
I am going to pull vavle covers tonight.
I'm going turbo so I am yanking this LS2 and throwing in a forged shortblock and turbo friendly cam. I don't want to take the risk leaving this shortblock in with all this metal floating around. The cylinder walls have some vertical lines as well.
Oh well....
Oh well....