LS1 Ticking/Pinging at idle
Thread Starter
Staging Lane
Joined: Jan 2007
Posts: 96
Likes: 0
From: Michigan
LS1 Ticking/Pinging at idle I can't figure out if this sound is normal or not. Its like a high pitched metallic sound. Only does it at idle, goes away when revved up. For all I know this is normal for this cam. Any suggestions on what it could be would be very appreciated. I've listened to a lot of other asa cammed cars online and i don't hear this noise but then again its hard to tell sometimes with computer speakers. Car is a 2000 Camaro SS with stock ls1 lower end, stock 799 heads, GM ASA cam-226/236 .525/.525 110lsa, LS6 springs, LS6 intake,Comp cams trunnion upgrade, Brian Tooley slow leak rate lifters-.075 preload, ls6 oil pump, cloyes timing gear set, stock exhaust manifolds, custom y-pipe with cats, hooker muffler. For some reason I couldn't upload the video I took so I put it on Youtube. Thanks.
Thread Starter
Staging Lane
Joined: Jan 2007
Posts: 96
Likes: 0
From: Michigan
I have only tuned it somewhat in the idle region just to get it to idle ok. I have not driven it yet. The weather is still too nasty here in Michigan. I tune it myself with hptuners. I could post up my current tune tonight when i get home if you think it could be tune related.
Thread Starter
Staging Lane
Joined: Jan 2007
Posts: 96
Likes: 0
From: Michigan
I've changed preload all around. .050,.075,.100. I used the comp cams checker. Doesn't make a difference at all. Idle timing is set at 24 degrees. To me it almost sounds like the valves pinging but like I said before I've never heard this noise on any other cammed car. Its driving me crazy.
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Staging Lane
Joined: Feb 2014
Posts: 75
Likes: 0
From: Falkville, Alabama
Man im really not sure... part of me wants to say detonation but I don't want you chasing your tail. I know a lot of those cars do make weird sounds after a cam swap. I don't want to tell you that its nothing though.
Thread Starter
Staging Lane
Joined: Jan 2007
Posts: 96
Likes: 0
From: Michigan
I ran the car again tonight to get the raf dialed in. Afterwards I started to play with the vcm controls in hptuners. I moved the timing, afr and rpms all over the place and none of it made a difference with the noise. It does go away at 1500 rpms. The valvetrain is the quietest it has ever been under the hood, i dont hear the noise at all but under the car is a different story.
Staging Lane
Joined: Feb 2014
Posts: 75
Likes: 0
From: Falkville, Alabama
Did the heads get milled? I've showed your video to a couple people and too many of them say that it is normal but I don't think so.. slim chance but maybe your valves and you pistons are getting to know each other too good? I could be wrong and this could be a normal sound but coming from the manifolds? I assume this doesn't go away once the car is warm? Scratch the valves meeting pistons that'd ger worse with rpm. Doea it sound like its every cylinder making this sound?
Did you run the car with no belts yet. That's always the first step. If it stops, you know it's accessory related.
It sounds like a pulley to me or your harmonic balancer is wobbling causing the noise. I had that happen to my car.
It sounds like a pulley to me or your harmonic balancer is wobbling causing the noise. I had that happen to my car.
