LS6 Ticking when warm and under hard cornering
Darth has a good idea, maybe you have a pin hole in the pickup tube or crack.
The engine itself still has a sewing machine noise. Only comes up once oil temps are over 140°F. Ill try to post video of it soon.
Darth has a good idea, maybe you have a pin hole in the pickup tube or crack.
The Best V8 Stories One Small Block at Time
about 2 to 3 years ago I swapped in a 228/230 .571/.573 on 112° comp cam and had the heads ported by TEA stage 2. Springs are PSI 1511ML and LS7 Lifters. I also went with a melling 10295 oil pump.
Now I am hoping that the ticking noise is lifters. I can rule out exhaust leak since at a recent autox event, the ticking got louder when I took a hard left turn. The ticking seems to be coming from the driver side, so there might be a connection there.
Right now I have 3 theories: First, I went with too much lifter preload. I chose 7.350" pushrods after measureing with the pushrod length tool. After my measurments that comes to .088" preload. After doing this I later learned that .060" is recommended for LS7 lifters and aftermarket cams. But I am not sure if going roughly .025" less is going to make a difference or prevent the lifters from collapsing.
Theory 2: I could have pinched the oring on the oil pump and that is causing oil airation. I've seen this cause the symptom that I am seeing where the engine starts ticking after getting warmed up. However, my oil pressure is roughly 60psi at startup and when its completely warm I get 42-44psi. I would think that it should be less if this were the case.
Theory 3: i just have a bad set of lifters, but I would think that they would be tapping all the time instead of once the engine is warm.
Now I am hoping its not something worse like rod knock, but it does not get louder with more revs and it does not go away if I start shutting down cylinders so there is still hope in that regard. If you read this far then thanks. Hopefully some of you guys can give me some ideas on getting this solved.
Did u ever figure out what the problem was..??









